node-inspector/front-end/ElementsTreeOutline.js

2281 строка
80 KiB
JavaScript
Executable File

/*
* Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2008 Matt Lilek <webkit@mattlilek.com>
* Copyright (C) 2009 Joseph Pecoraro
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @constructor
* @extends {TreeOutline}
* @param {boolean=} omitRootDOMNode
* @param {boolean=} selectEnabled
* @param {boolean=} showInElementsPanelEnabled
* @param {function(WebInspector.ContextMenu, WebInspector.DOMNode)=} contextMenuCallback
* @param {function(DOMAgent.NodeId, string, boolean)=} setPseudoClassCallback
*/
WebInspector.ElementsTreeOutline = function(omitRootDOMNode, selectEnabled, showInElementsPanelEnabled, contextMenuCallback, setPseudoClassCallback)
{
this.element = document.createElement("ol");
this.element.className = "elements-tree-outline";
this.element.addEventListener("mousedown", this._onmousedown.bind(this), false);
this.element.addEventListener("mousemove", this._onmousemove.bind(this), false);
this.element.addEventListener("mouseout", this._onmouseout.bind(this), false);
this.element.addEventListener("dragstart", this._ondragstart.bind(this), false);
this.element.addEventListener("dragover", this._ondragover.bind(this), false);
this.element.addEventListener("dragleave", this._ondragleave.bind(this), false);
this.element.addEventListener("drop", this._ondrop.bind(this), false);
this.element.addEventListener("dragend", this._ondragend.bind(this), false);
this.element.addEventListener("keydown", this._onkeydown.bind(this), false);
TreeOutline.call(this, this.element);
this._includeRootDOMNode = !omitRootDOMNode;
this._selectEnabled = selectEnabled;
this._showInElementsPanelEnabled = showInElementsPanelEnabled;
this._rootDOMNode = null;
this._selectDOMNode = null;
this._eventSupport = new WebInspector.Object();
this._visible = false;
this.element.addEventListener("contextmenu", this._contextMenuEventFired.bind(this), true);
this._contextMenuCallback = contextMenuCallback;
this._setPseudoClassCallback = setPseudoClassCallback;
this._createNodeDecorators();
}
WebInspector.ElementsTreeOutline.Events = {
SelectedNodeChanged: "SelectedNodeChanged"
}
WebInspector.ElementsTreeOutline.MappedCharToEntity = {
"\u00a0": "nbsp",
"\u2002": "ensp",
"\u2003": "emsp",
"\u2009": "thinsp",
"\u200a": "#8202", // Hairspace
"\u200b": "#8203", // ZWSP
"\u200c": "zwnj",
"\u200d": "zwj",
"\u200e": "lrm",
"\u200f": "rlm",
"\u202a": "#8234", // LRE
"\u202b": "#8235", // RLE
"\u202c": "#8236", // PDF
"\u202d": "#8237", // LRO
"\u202e": "#8238" // RLO
}
WebInspector.ElementsTreeOutline.prototype = {
_createNodeDecorators: function()
{
this._nodeDecorators = [];
this._nodeDecorators.push(new WebInspector.ElementsTreeOutline.PseudoStateDecorator());
},
wireToDomAgent: function()
{
this._elementsTreeUpdater = new WebInspector.ElementsTreeUpdater(this);
},
setVisible: function(visible)
{
this._visible = visible;
if (!this._visible)
return;
this._updateModifiedNodes();
if (this._selectedDOMNode)
this._revealAndSelectNode(this._selectedDOMNode, false);
},
addEventListener: function(eventType, listener, thisObject)
{
this._eventSupport.addEventListener(eventType, listener, thisObject);
},
removeEventListener: function(eventType, listener, thisObject)
{
this._eventSupport.removeEventListener(eventType, listener, thisObject);
},
get rootDOMNode()
{
return this._rootDOMNode;
},
set rootDOMNode(x)
{
if (this._rootDOMNode === x)
return;
this._rootDOMNode = x;
this._isXMLMimeType = x && x.isXMLNode();
this.update();
},
get isXMLMimeType()
{
return this._isXMLMimeType;
},
selectedDOMNode: function()
{
return this._selectedDOMNode;
},
selectDOMNode: function(node, focus)
{
if (this._selectedDOMNode === node) {
this._revealAndSelectNode(node, !focus);
return;
}
this._selectedDOMNode = node;
this._revealAndSelectNode(node, !focus);
// The _revealAndSelectNode() method might find a different element if there is inlined text,
// and the select() call would change the selectedDOMNode and reenter this setter. So to
// avoid calling _selectedNodeChanged() twice, first check if _selectedDOMNode is the same
// node as the one passed in.
if (this._selectedDOMNode === node)
this._selectedNodeChanged();
},
/**
* @return {boolean}
*/
editing: function()
{
var node = this.selectedDOMNode();
if (!node)
return false;
var treeElement = this.findTreeElement(node);
if (!treeElement)
return false;
return treeElement._editing || false;
},
update: function()
{
var selectedNode = this.selectedTreeElement ? this.selectedTreeElement.representedObject : null;
this.removeChildren();
if (!this.rootDOMNode)
return;
var treeElement;
if (this._includeRootDOMNode) {
treeElement = new WebInspector.ElementsTreeElement(this.rootDOMNode);
treeElement.selectable = this._selectEnabled;
this.appendChild(treeElement);
} else {
// FIXME: this could use findTreeElement to reuse a tree element if it already exists
var node = this.rootDOMNode.firstChild;
while (node) {
treeElement = new WebInspector.ElementsTreeElement(node);
treeElement.selectable = this._selectEnabled;
this.appendChild(treeElement);
node = node.nextSibling;
}
}
if (selectedNode)
this._revealAndSelectNode(selectedNode, true);
},
updateSelection: function()
{
if (!this.selectedTreeElement)
return;
var element = this.treeOutline.selectedTreeElement;
element.updateSelection();
},
/**
* @param {WebInspector.DOMNode} node
*/
updateOpenCloseTags: function(node)
{
var treeElement = this.findTreeElement(node);
if (treeElement)
treeElement.updateTitle();
var children = treeElement.children;
var closingTagElement = children[children.length - 1];
if (closingTagElement && closingTagElement._elementCloseTag)
closingTagElement.updateTitle();
},
_selectedNodeChanged: function()
{
this._eventSupport.dispatchEventToListeners(WebInspector.ElementsTreeOutline.Events.SelectedNodeChanged, this._selectedDOMNode);
},
/**
* @param {WebInspector.DOMNode} node
*/
findTreeElement: function(node)
{
function isAncestorNode(ancestor, node)
{
return ancestor.isAncestor(node);
}
function parentNode(node)
{
return node.parentNode;
}
var treeElement = TreeOutline.prototype.findTreeElement.call(this, node, isAncestorNode, parentNode);
if (!treeElement && node.nodeType() === Node.TEXT_NODE) {
// The text node might have been inlined if it was short, so try to find the parent element.
treeElement = TreeOutline.prototype.findTreeElement.call(this, node.parentNode, isAncestorNode, parentNode);
}
return treeElement;
},
/**
* @param {WebInspector.DOMNode} node
*/
createTreeElementFor: function(node)
{
var treeElement = this.findTreeElement(node);
if (treeElement)
return treeElement;
if (!node.parentNode)
return null;
treeElement = this.createTreeElementFor(node.parentNode);
if (treeElement && treeElement.showChild(node.index))
return treeElement.children[node.index];
return null;
},
set suppressRevealAndSelect(x)
{
if (this._suppressRevealAndSelect === x)
return;
this._suppressRevealAndSelect = x;
},
_revealAndSelectNode: function(node, omitFocus)
{
if (!node || this._suppressRevealAndSelect)
return;
var treeElement = this.createTreeElementFor(node);
if (!treeElement)
return;
treeElement.revealAndSelect(omitFocus);
},
_treeElementFromEvent: function(event)
{
var scrollContainer = this.element.parentElement;
// We choose this X coordinate based on the knowledge that our list
// items extend at least to the right edge of the outer <ol> container.
// In the no-word-wrap mode the outer <ol> may be wider than the tree container
// (and partially hidden), in which case we are left to use only its right boundary.
var x = scrollContainer.totalOffsetLeft() + scrollContainer.offsetWidth - 36;
var y = event.pageY;
// Our list items have 1-pixel cracks between them vertically. We avoid
// the cracks by checking slightly above and slightly below the mouse
// and seeing if we hit the same element each time.
var elementUnderMouse = this.treeElementFromPoint(x, y);
var elementAboveMouse = this.treeElementFromPoint(x, y - 2);
var element;
if (elementUnderMouse === elementAboveMouse)
element = elementUnderMouse;
else
element = this.treeElementFromPoint(x, y + 2);
return element;
},
_onmousedown: function(event)
{
var element = this._treeElementFromEvent(event);
if (!element || element.isEventWithinDisclosureTriangle(event))
return;
element.select();
},
_onmousemove: function(event)
{
var element = this._treeElementFromEvent(event);
if (element && this._previousHoveredElement === element)
return;
if (this._previousHoveredElement) {
this._previousHoveredElement.hovered = false;
delete this._previousHoveredElement;
}
if (element) {
element.hovered = true;
this._previousHoveredElement = element;
}
WebInspector.domAgent.highlightDOMNode(element ? element.representedObject.id : 0);
},
_onmouseout: function(event)
{
var nodeUnderMouse = document.elementFromPoint(event.pageX, event.pageY);
if (nodeUnderMouse && nodeUnderMouse.isDescendant(this.element))
return;
if (this._previousHoveredElement) {
this._previousHoveredElement.hovered = false;
delete this._previousHoveredElement;
}
WebInspector.domAgent.hideDOMNodeHighlight();
},
_ondragstart: function(event)
{
if (!window.getSelection().isCollapsed)
return false;
if (event.target.nodeName === "A")
return false;
var treeElement = this._treeElementFromEvent(event);
if (!treeElement)
return false;
if (!this._isValidDragSourceOrTarget(treeElement))
return false;
if (treeElement.representedObject.nodeName() === "BODY" || treeElement.representedObject.nodeName() === "HEAD")
return false;
event.dataTransfer.setData("text/plain", treeElement.listItemElement.textContent);
event.dataTransfer.effectAllowed = "copyMove";
this._treeElementBeingDragged = treeElement;
WebInspector.domAgent.hideDOMNodeHighlight();
return true;
},
_ondragover: function(event)
{
if (!this._treeElementBeingDragged)
return false;
var treeElement = this._treeElementFromEvent(event);
if (!this._isValidDragSourceOrTarget(treeElement))
return false;
var node = treeElement.representedObject;
while (node) {
if (node === this._treeElementBeingDragged.representedObject)
return false;
node = node.parentNode;
}
treeElement.updateSelection();
treeElement.listItemElement.addStyleClass("elements-drag-over");
this._dragOverTreeElement = treeElement;
event.preventDefault();
event.dataTransfer.dropEffect = 'move';
return false;
},
_ondragleave: function(event)
{
this._clearDragOverTreeElementMarker();
event.preventDefault();
return false;
},
_isValidDragSourceOrTarget: function(treeElement)
{
if (!treeElement)
return false;
var node = treeElement.representedObject;
if (!(node instanceof WebInspector.DOMNode))
return false;
if (!node.parentNode || node.parentNode.nodeType() !== Node.ELEMENT_NODE)
return false;
return true;
},
_ondrop: function(event)
{
event.preventDefault();
var treeElement = this._treeElementFromEvent(event);
if (treeElement)
this._doMove(treeElement);
},
_doMove: function(treeElement)
{
if (!this._treeElementBeingDragged)
return;
var parentNode;
var anchorNode;
if (treeElement._elementCloseTag) {
// Drop onto closing tag -> insert as last child.
parentNode = treeElement.representedObject;
} else {
var dragTargetNode = treeElement.representedObject;
parentNode = dragTargetNode.parentNode;
anchorNode = dragTargetNode;
}
var wasExpanded = this._treeElementBeingDragged.expanded;
this._treeElementBeingDragged.representedObject.moveTo(parentNode, anchorNode, this._selectNodeAfterEdit.bind(this, null, wasExpanded));
delete this._treeElementBeingDragged;
},
_ondragend: function(event)
{
event.preventDefault();
this._clearDragOverTreeElementMarker();
delete this._treeElementBeingDragged;
},
_clearDragOverTreeElementMarker: function()
{
if (this._dragOverTreeElement) {
this._dragOverTreeElement.updateSelection();
this._dragOverTreeElement.listItemElement.removeStyleClass("elements-drag-over");
delete this._dragOverTreeElement;
}
},
/**
* @param {Event} event
*/
_onkeydown: function(event)
{
var keyboardEvent = /** @type {KeyboardEvent} */ (event);
var node = this.selectedDOMNode();
var treeElement = this.getCachedTreeElement(node);
if (!treeElement)
return;
if (!treeElement._editing && WebInspector.KeyboardShortcut.hasNoModifiers(keyboardEvent) && keyboardEvent.keyCode === WebInspector.KeyboardShortcut.Keys.H.code) {
this._toggleHideShortcut(node);
event.consume(true);
return;
}
},
_contextMenuEventFired: function(event)
{
if (!this._showInElementsPanelEnabled)
return;
var treeElement = this._treeElementFromEvent(event);
if (!treeElement)
return;
function focusElement()
{
// Force elements module load.
WebInspector.showPanel("elements");
WebInspector.domAgent.inspectElement(treeElement.representedObject.id);
}
var contextMenu = new WebInspector.ContextMenu(event);
contextMenu.appendItem(WebInspector.UIString(WebInspector.useLowerCaseMenuTitles() ? "Reveal in Elements panel" : "Reveal in Elements Panel"), focusElement.bind(this));
contextMenu.show();
},
populateContextMenu: function(contextMenu, event)
{
var treeElement = this._treeElementFromEvent(event);
if (!treeElement)
return;
var isTag = treeElement.representedObject.nodeType() === Node.ELEMENT_NODE;
var textNode = event.target.enclosingNodeOrSelfWithClass("webkit-html-text-node");
if (textNode && textNode.hasStyleClass("bogus"))
textNode = null;
var commentNode = event.target.enclosingNodeOrSelfWithClass("webkit-html-comment");
contextMenu.appendApplicableItems(event.target);
if (textNode) {
contextMenu.appendSeparator();
treeElement._populateTextContextMenu(contextMenu, textNode);
} else if (isTag) {
contextMenu.appendSeparator();
treeElement._populateTagContextMenu(contextMenu, event);
} else if (commentNode) {
contextMenu.appendSeparator();
treeElement._populateNodeContextMenu(contextMenu, textNode);
}
},
adjustCollapsedRange: function()
{
},
_updateModifiedNodes: function()
{
if (this._elementsTreeUpdater)
this._elementsTreeUpdater._updateModifiedNodes();
},
_populateContextMenu: function(contextMenu, node)
{
if (this._contextMenuCallback)
this._contextMenuCallback(contextMenu, node);
},
handleShortcut: function(event)
{
var node = this.selectedDOMNode();
var treeElement = this.getCachedTreeElement(node);
if (!node || !treeElement)
return;
if (event.keyIdentifier === "F2") {
this._toggleEditAsHTML(node);
event.handled = true;
return;
}
if (WebInspector.KeyboardShortcut.eventHasCtrlOrMeta(event) && node.parentNode) {
if (event.keyIdentifier === "Up" && node.previousSibling) {
node.moveTo(node.parentNode, node.previousSibling, this._selectNodeAfterEdit.bind(this, null, treeElement.expanded));
event.handled = true;
return;
}
if (event.keyIdentifier === "Down" && node.nextSibling) {
node.moveTo(node.parentNode, node.nextSibling.nextSibling, this._selectNodeAfterEdit.bind(this, null, treeElement.expanded));
event.handled = true;
return;
}
}
},
_toggleEditAsHTML: function(node)
{
var treeElement = this.getCachedTreeElement(node);
if (!treeElement)
return;
if (treeElement._editing && treeElement._htmlEditElement && WebInspector.isBeingEdited(treeElement._htmlEditElement))
treeElement._editing.commit();
else
treeElement._editAsHTML();
},
_selectNodeAfterEdit: function(fallbackNode, wasExpanded, error, nodeId)
{
if (error)
return;
// Select it and expand if necessary. We force tree update so that it processes dom events and is up to date.
this._updateModifiedNodes();
var newNode = WebInspector.domAgent.nodeForId(nodeId) || fallbackNode;
if (!newNode)
return;
this.selectDOMNode(newNode, true);
var newTreeItem = this.findTreeElement(newNode);
if (wasExpanded) {
if (newTreeItem)
newTreeItem.expand();
}
return newTreeItem;
},
/**
* Runs a script on the node's remote object that toggles a class name on
* the node and injects a stylesheet into the head of the node's document
* containing a rule to set "visibility: hidden" on the class and all it's
* ancestors.
*
* @param {WebInspector.DOMNode} node
* @param {function(?WebInspector.RemoteObject)=} userCallback
*/
_toggleHideShortcut: function(node, userCallback)
{
function resolvedNode(object)
{
if (!object)
return;
function toggleClassAndInjectStyleRule()
{
const className = "__web-inspector-hide-shortcut__";
const styleTagId = "__web-inspector-hide-shortcut-style__";
const styleRule = ".__web-inspector-hide-shortcut__, .__web-inspector-hide-shortcut__ * { visibility: hidden !important; }";
this.classList.toggle(className);
var style = document.head.querySelector("style#" + styleTagId);
if (style)
return;
style = document.createElement("style");
style.id = styleTagId;
style.type = "text/css";
style.innerHTML = styleRule;
document.head.appendChild(style);
}
object.callFunction(toggleClassAndInjectStyleRule, undefined, userCallback);
object.release();
}
WebInspector.RemoteObject.resolveNode(node, "", resolvedNode);
},
__proto__: TreeOutline.prototype
}
/**
* @interface
*/
WebInspector.ElementsTreeOutline.ElementDecorator = function()
{
}
WebInspector.ElementsTreeOutline.ElementDecorator.prototype = {
/**
* @param {WebInspector.DOMNode} node
*/
decorate: function(node)
{
},
/**
* @param {WebInspector.DOMNode} node
*/
decorateAncestor: function(node)
{
}
}
/**
* @constructor
* @implements {WebInspector.ElementsTreeOutline.ElementDecorator}
*/
WebInspector.ElementsTreeOutline.PseudoStateDecorator = function()
{
WebInspector.ElementsTreeOutline.ElementDecorator.call(this);
}
WebInspector.ElementsTreeOutline.PseudoStateDecorator.PropertyName = "pseudoState";
WebInspector.ElementsTreeOutline.PseudoStateDecorator.prototype = {
decorate: function(node)
{
if (node.nodeType() !== Node.ELEMENT_NODE)
return null;
var propertyValue = node.getUserProperty(WebInspector.ElementsTreeOutline.PseudoStateDecorator.PropertyName);
if (!propertyValue)
return null;
return WebInspector.UIString("Element state: %s", ":" + propertyValue.join(", :"));
},
decorateAncestor: function(node)
{
if (node.nodeType() !== Node.ELEMENT_NODE)
return null;
var descendantCount = node.descendantUserPropertyCount(WebInspector.ElementsTreeOutline.PseudoStateDecorator.PropertyName);
if (!descendantCount)
return null;
if (descendantCount === 1)
return WebInspector.UIString("%d descendant with forced state", descendantCount);
return WebInspector.UIString("%d descendants with forced state", descendantCount);
},
__proto__: WebInspector.ElementsTreeOutline.ElementDecorator.prototype
}
/**
* @constructor
* @extends {TreeElement}
* @param {boolean=} elementCloseTag
*/
WebInspector.ElementsTreeElement = function(node, elementCloseTag)
{
this._elementCloseTag = elementCloseTag;
var hasChildrenOverride = !elementCloseTag && node.hasChildNodes() && !this._showInlineText(node);
// The title will be updated in onattach.
TreeElement.call(this, "", node, hasChildrenOverride);
if (this.representedObject.nodeType() == Node.ELEMENT_NODE && !elementCloseTag)
this._canAddAttributes = true;
this._searchQuery = null;
this._expandedChildrenLimit = WebInspector.ElementsTreeElement.InitialChildrenLimit;
}
WebInspector.ElementsTreeElement.InitialChildrenLimit = 500;
// A union of HTML4 and HTML5-Draft elements that explicitly
// or implicitly (for HTML5) forbid the closing tag.
// FIXME: Revise once HTML5 Final is published.
WebInspector.ElementsTreeElement.ForbiddenClosingTagElements = [
"area", "base", "basefont", "br", "canvas", "col", "command", "embed", "frame",
"hr", "img", "input", "isindex", "keygen", "link", "meta", "param", "source"
].keySet();
// These tags we do not allow editing their tag name.
WebInspector.ElementsTreeElement.EditTagBlacklist = [
"html", "head", "body"
].keySet();
WebInspector.ElementsTreeElement.prototype = {
highlightSearchResults: function(searchQuery)
{
if (this._searchQuery !== searchQuery) {
this._updateSearchHighlight(false);
delete this._highlightResult; // A new search query.
}
this._searchQuery = searchQuery;
this._searchHighlightsVisible = true;
this.updateTitle(true);
},
hideSearchHighlights: function()
{
delete this._searchHighlightsVisible;
this._updateSearchHighlight(false);
},
_updateSearchHighlight: function(show)
{
if (!this._highlightResult)
return;
function updateEntryShow(entry)
{
switch (entry.type) {
case "added":
entry.parent.insertBefore(entry.node, entry.nextSibling);
break;
case "changed":
entry.node.textContent = entry.newText;
break;
}
}
function updateEntryHide(entry)
{
switch (entry.type) {
case "added":
if (entry.node.parentElement)
entry.node.parentElement.removeChild(entry.node);
break;
case "changed":
entry.node.textContent = entry.oldText;
break;
}
}
// Preserve the semantic of node by following the order of updates for hide and show.
if (show) {
for (var i = 0, size = this._highlightResult.length; i < size; ++i)
updateEntryShow(this._highlightResult[i]);
} else {
for (var i = (this._highlightResult.length - 1); i >= 0; --i)
updateEntryHide(this._highlightResult[i]);
}
},
get hovered()
{
return this._hovered;
},
set hovered(x)
{
if (this._hovered === x)
return;
this._hovered = x;
if (this.listItemElement) {
if (x) {
this.updateSelection();
this.listItemElement.addStyleClass("hovered");
} else {
this.listItemElement.removeStyleClass("hovered");
}
}
},
get expandedChildrenLimit()
{
return this._expandedChildrenLimit;
},
set expandedChildrenLimit(x)
{
if (this._expandedChildrenLimit === x)
return;
this._expandedChildrenLimit = x;
if (this.treeOutline && !this._updateChildrenInProgress)
this._updateChildren(true);
},
get expandedChildCount()
{
var count = this.children.length;
if (count && this.children[count - 1]._elementCloseTag)
count--;
if (count && this.children[count - 1].expandAllButton)
count--;
return count;
},
showChild: function(index)
{
if (this._elementCloseTag)
return;
if (index >= this.expandedChildrenLimit) {
this._expandedChildrenLimit = index + 1;
this._updateChildren(true);
}
// Whether index-th child is visible in the children tree
return this.expandedChildCount > index;
},
updateSelection: function()
{
var listItemElement = this.listItemElement;
if (!listItemElement)
return;
if (!this._readyToUpdateSelection) {
if (document.body.offsetWidth > 0)
this._readyToUpdateSelection = true;
else {
// The stylesheet hasn't loaded yet or the window is closed,
// so we can't calculate what we need. Return early.
return;
}
}
if (!this.selectionElement) {
this.selectionElement = document.createElement("div");
this.selectionElement.className = "selection selected";
listItemElement.insertBefore(this.selectionElement, listItemElement.firstChild);
}
this.selectionElement.style.height = listItemElement.offsetHeight + "px";
},
onattach: function()
{
if (this._hovered) {
this.updateSelection();
this.listItemElement.addStyleClass("hovered");
}
this.updateTitle();
this._preventFollowingLinksOnDoubleClick();
this.listItemElement.draggable = true;
},
_preventFollowingLinksOnDoubleClick: function()
{
var links = this.listItemElement.querySelectorAll("li > .webkit-html-tag > .webkit-html-attribute > .webkit-html-external-link, li > .webkit-html-tag > .webkit-html-attribute > .webkit-html-resource-link");
if (!links)
return;
for (var i = 0; i < links.length; ++i)
links[i].preventFollowOnDoubleClick = true;
},
onpopulate: function()
{
if (this.children.length || this._showInlineText(this.representedObject) || this._elementCloseTag)
return;
this.updateChildren();
},
/**
* @param {boolean=} fullRefresh
*/
updateChildren: function(fullRefresh)
{
if (this._elementCloseTag)
return;
this.representedObject.getChildNodes(this._updateChildren.bind(this, fullRefresh));
},
/**
* @param {boolean=} closingTag
*/
insertChildElement: function(child, index, closingTag)
{
var newElement = new WebInspector.ElementsTreeElement(child, closingTag);
newElement.selectable = this.treeOutline._selectEnabled;
this.insertChild(newElement, index);
return newElement;
},
moveChild: function(child, targetIndex)
{
var wasSelected = child.selected;
this.removeChild(child);
this.insertChild(child, targetIndex);
if (wasSelected)
child.select();
},
/**
* @param {boolean=} fullRefresh
*/
_updateChildren: function(fullRefresh)
{
if (this._updateChildrenInProgress || !this.treeOutline._visible)
return;
this._updateChildrenInProgress = true;
var selectedNode = this.treeOutline.selectedDOMNode();
var originalScrollTop = 0;
if (fullRefresh) {
var treeOutlineContainerElement = this.treeOutline.element.parentNode;
originalScrollTop = treeOutlineContainerElement.scrollTop;
var selectedTreeElement = this.treeOutline.selectedTreeElement;
if (selectedTreeElement && selectedTreeElement.hasAncestor(this))
this.select();
this.removeChildren();
}
var treeElement = this;
var treeChildIndex = 0;
var elementToSelect;
function updateChildrenOfNode(node)
{
var treeOutline = treeElement.treeOutline;
var child = node.firstChild;
while (child) {
var currentTreeElement = treeElement.children[treeChildIndex];
if (!currentTreeElement || currentTreeElement.representedObject !== child) {
// Find any existing element that is later in the children list.
var existingTreeElement = null;
for (var i = (treeChildIndex + 1), size = treeElement.expandedChildCount; i < size; ++i) {
if (treeElement.children[i].representedObject === child) {
existingTreeElement = treeElement.children[i];
break;
}
}
if (existingTreeElement && existingTreeElement.parent === treeElement) {
// If an existing element was found and it has the same parent, just move it.
treeElement.moveChild(existingTreeElement, treeChildIndex);
} else {
// No existing element found, insert a new element.
if (treeChildIndex < treeElement.expandedChildrenLimit) {
var newElement = treeElement.insertChildElement(child, treeChildIndex);
if (child === selectedNode)
elementToSelect = newElement;
if (treeElement.expandedChildCount > treeElement.expandedChildrenLimit)
treeElement.expandedChildrenLimit++;
}
}
}
child = child.nextSibling;
++treeChildIndex;
}
}
// Remove any tree elements that no longer have this node (or this node's contentDocument) as their parent.
for (var i = (this.children.length - 1); i >= 0; --i) {
var currentChild = this.children[i];
var currentNode = currentChild.representedObject;
var currentParentNode = currentNode.parentNode;
if (currentParentNode === this.representedObject)
continue;
var selectedTreeElement = this.treeOutline.selectedTreeElement;
if (selectedTreeElement && (selectedTreeElement === currentChild || selectedTreeElement.hasAncestor(currentChild)))
this.select();
this.removeChildAtIndex(i);
}
updateChildrenOfNode(this.representedObject);
this.adjustCollapsedRange();
var lastChild = this.children[this.children.length - 1];
if (this.representedObject.nodeType() == Node.ELEMENT_NODE && (!lastChild || !lastChild._elementCloseTag))
this.insertChildElement(this.representedObject, this.children.length, true);
// We want to restore the original selection and tree scroll position after a full refresh, if possible.
if (fullRefresh && elementToSelect) {
elementToSelect.select();
if (treeOutlineContainerElement && originalScrollTop <= treeOutlineContainerElement.scrollHeight)
treeOutlineContainerElement.scrollTop = originalScrollTop;
}
delete this._updateChildrenInProgress;
},
adjustCollapsedRange: function()
{
// Ensure precondition: only the tree elements for node children are found in the tree
// (not the Expand All button or the closing tag).
if (this.expandAllButtonElement && this.expandAllButtonElement.__treeElement.parent)
this.removeChild(this.expandAllButtonElement.__treeElement);
const node = this.representedObject;
if (!node.children)
return;
const childNodeCount = node.children.length;
// In case some nodes from the expanded range were removed, pull some nodes from the collapsed range into the expanded range at the bottom.
for (var i = this.expandedChildCount, limit = Math.min(this.expandedChildrenLimit, childNodeCount); i < limit; ++i)
this.insertChildElement(node.children[i], i);
const expandedChildCount = this.expandedChildCount;
if (childNodeCount > this.expandedChildCount) {
var targetButtonIndex = expandedChildCount;
if (!this.expandAllButtonElement) {
var button = document.createElement("button");
button.className = "show-all-nodes";
button.value = "";
var item = new TreeElement(button, null, false);
item.selectable = false;
item.expandAllButton = true;
this.insertChild(item, targetButtonIndex);
this.expandAllButtonElement = item.listItemElement.firstChild;
this.expandAllButtonElement.__treeElement = item;
this.expandAllButtonElement.addEventListener("click", this.handleLoadAllChildren.bind(this), false);
} else if (!this.expandAllButtonElement.__treeElement.parent)
this.insertChild(this.expandAllButtonElement.__treeElement, targetButtonIndex);
this.expandAllButtonElement.textContent = WebInspector.UIString("Show All Nodes (%d More)", childNodeCount - expandedChildCount);
} else if (this.expandAllButtonElement)
delete this.expandAllButtonElement;
},
handleLoadAllChildren: function()
{
this.expandedChildrenLimit = Math.max(this.representedObject._childNodeCount, this.expandedChildrenLimit + WebInspector.ElementsTreeElement.InitialChildrenLimit);
},
expandRecursively: function()
{
function callback()
{
TreeElement.prototype.expandRecursively.call(this, Number.MAX_VALUE);
}
this.representedObject.getSubtree(-1, callback.bind(this));
},
onexpand: function()
{
if (this._elementCloseTag)
return;
this.updateTitle();
this.treeOutline.updateSelection();
},
oncollapse: function()
{
if (this._elementCloseTag)
return;
this.updateTitle();
this.treeOutline.updateSelection();
},
onreveal: function()
{
if (this.listItemElement) {
var tagSpans = this.listItemElement.getElementsByClassName("webkit-html-tag-name");
if (tagSpans.length)
tagSpans[0].scrollIntoViewIfNeeded(false);
else
this.listItemElement.scrollIntoViewIfNeeded(false);
}
},
onselect: function(selectedByUser)
{
this.treeOutline.suppressRevealAndSelect = true;
this.treeOutline.selectDOMNode(this.representedObject, selectedByUser);
if (selectedByUser)
WebInspector.domAgent.highlightDOMNode(this.representedObject.id);
this.updateSelection();
this.treeOutline.suppressRevealAndSelect = false;
return true;
},
ondelete: function()
{
var startTagTreeElement = this.treeOutline.findTreeElement(this.representedObject);
startTagTreeElement ? startTagTreeElement.remove() : this.remove();
return true;
},
onenter: function()
{
// On Enter or Return start editing the first attribute
// or create a new attribute on the selected element.
if (this._editing)
return false;
this._startEditing();
// prevent a newline from being immediately inserted
return true;
},
selectOnMouseDown: function(event)
{
TreeElement.prototype.selectOnMouseDown.call(this, event);
if (this._editing)
return;
if (this.treeOutline._showInElementsPanelEnabled) {
WebInspector.showPanel("elements");
this.treeOutline.selectDOMNode(this.representedObject, true);
}
// Prevent selecting the nearest word on double click.
if (event.detail >= 2)
event.preventDefault();
},
ondblclick: function(event)
{
if (this._editing || this._elementCloseTag)
return;
if (this._startEditingTarget(event.target))
return;
if (this.hasChildren && !this.expanded)
this.expand();
},
_insertInLastAttributePosition: function(tag, node)
{
if (tag.getElementsByClassName("webkit-html-attribute").length > 0)
tag.insertBefore(node, tag.lastChild);
else {
var nodeName = tag.textContent.match(/^<(.*?)>$/)[1];
tag.textContent = '';
tag.appendChild(document.createTextNode('<'+nodeName));
tag.appendChild(node);
tag.appendChild(document.createTextNode('>'));
}
this.updateSelection();
},
_startEditingTarget: function(eventTarget)
{
if (this.treeOutline.selectedDOMNode() != this.representedObject)
return;
if (this.representedObject.nodeType() != Node.ELEMENT_NODE && this.representedObject.nodeType() != Node.TEXT_NODE)
return false;
var textNode = eventTarget.enclosingNodeOrSelfWithClass("webkit-html-text-node");
if (textNode)
return this._startEditingTextNode(textNode);
var attribute = eventTarget.enclosingNodeOrSelfWithClass("webkit-html-attribute");
if (attribute)
return this._startEditingAttribute(attribute, eventTarget);
var tagName = eventTarget.enclosingNodeOrSelfWithClass("webkit-html-tag-name");
if (tagName)
return this._startEditingTagName(tagName);
var newAttribute = eventTarget.enclosingNodeOrSelfWithClass("add-attribute");
if (newAttribute)
return this._addNewAttribute();
return false;
},
_populateTagContextMenu: function(contextMenu, event)
{
var attribute = event.target.enclosingNodeOrSelfWithClass("webkit-html-attribute");
var newAttribute = event.target.enclosingNodeOrSelfWithClass("add-attribute");
// Add attribute-related actions.
var treeElement = this._elementCloseTag ? this.treeOutline.findTreeElement(this.representedObject) : this;
contextMenu.appendItem(WebInspector.UIString(WebInspector.useLowerCaseMenuTitles() ? "Add attribute" : "Add Attribute"), this._addNewAttribute.bind(treeElement));
if (attribute && !newAttribute)
contextMenu.appendItem(WebInspector.UIString(WebInspector.useLowerCaseMenuTitles() ? "Edit attribute" : "Edit Attribute"), this._startEditingAttribute.bind(this, attribute, event.target));
contextMenu.appendSeparator();
if (this.treeOutline._setPseudoClassCallback) {
var pseudoSubMenu = contextMenu.appendSubMenuItem(WebInspector.UIString(WebInspector.useLowerCaseMenuTitles() ? "Force element state" : "Force Element State"));
this._populateForcedPseudoStateItems(pseudoSubMenu);
contextMenu.appendSeparator();
}
this._populateNodeContextMenu(contextMenu);
this.treeOutline._populateContextMenu(contextMenu, this.representedObject);
contextMenu.appendSeparator();
contextMenu.appendItem(WebInspector.UIString(WebInspector.useLowerCaseMenuTitles() ? "Scroll into view" : "Scroll into View"), this._scrollIntoView.bind(this));
},
_populateForcedPseudoStateItems: function(subMenu)
{
const pseudoClasses = ["active", "hover", "focus", "visited"];
var node = this.representedObject;
var forcedPseudoState = (node ? node.getUserProperty("pseudoState") : null) || [];
for (var i = 0; i < pseudoClasses.length; ++i) {
var pseudoClassForced = forcedPseudoState.indexOf(pseudoClasses[i]) >= 0;
subMenu.appendCheckboxItem(":" + pseudoClasses[i], this.treeOutline._setPseudoClassCallback.bind(null, node.id, pseudoClasses[i], !pseudoClassForced), pseudoClassForced, false);
}
},
_populateTextContextMenu: function(contextMenu, textNode)
{
contextMenu.appendItem(WebInspector.UIString(WebInspector.useLowerCaseMenuTitles() ? "Edit text" : "Edit Text"), this._startEditingTextNode.bind(this, textNode));
this._populateNodeContextMenu(contextMenu);
},
_populateNodeContextMenu: function(contextMenu)
{
// Add free-form node-related actions.
contextMenu.appendItem(WebInspector.UIString("Edit as HTML"), this._editAsHTML.bind(this));
contextMenu.appendItem(WebInspector.UIString("Copy as HTML"), this._copyHTML.bind(this));
contextMenu.appendItem(WebInspector.UIString("Copy XPath"), this._copyXPath.bind(this));
contextMenu.appendItem(WebInspector.UIString(WebInspector.useLowerCaseMenuTitles() ? "Delete node" : "Delete Node"), this.remove.bind(this));
},
_startEditing: function()
{
if (this.treeOutline.selectedDOMNode() !== this.representedObject)
return;
var listItem = this._listItemNode;
if (this._canAddAttributes) {
var attribute = listItem.getElementsByClassName("webkit-html-attribute")[0];
if (attribute)
return this._startEditingAttribute(attribute, attribute.getElementsByClassName("webkit-html-attribute-value")[0]);
return this._addNewAttribute();
}
if (this.representedObject.nodeType() === Node.TEXT_NODE) {
var textNode = listItem.getElementsByClassName("webkit-html-text-node")[0];
if (textNode)
return this._startEditingTextNode(textNode);
return;
}
},
_addNewAttribute: function()
{
// Cannot just convert the textual html into an element without
// a parent node. Use a temporary span container for the HTML.
var container = document.createElement("span");
this._buildAttributeDOM(container, " ", "");
var attr = container.firstChild;
attr.style.marginLeft = "2px"; // overrides the .editing margin rule
attr.style.marginRight = "2px"; // overrides the .editing margin rule
var tag = this.listItemElement.getElementsByClassName("webkit-html-tag")[0];
this._insertInLastAttributePosition(tag, attr);
attr.scrollIntoViewIfNeeded(true);
return this._startEditingAttribute(attr, attr);
},
_triggerEditAttribute: function(attributeName)
{
var attributeElements = this.listItemElement.getElementsByClassName("webkit-html-attribute-name");
for (var i = 0, len = attributeElements.length; i < len; ++i) {
if (attributeElements[i].textContent === attributeName) {
for (var elem = attributeElements[i].nextSibling; elem; elem = elem.nextSibling) {
if (elem.nodeType !== Node.ELEMENT_NODE)
continue;
if (elem.hasStyleClass("webkit-html-attribute-value"))
return this._startEditingAttribute(elem.parentNode, elem);
}
}
}
},
_startEditingAttribute: function(attribute, elementForSelection)
{
if (WebInspector.isBeingEdited(attribute))
return true;
var attributeNameElement = attribute.getElementsByClassName("webkit-html-attribute-name")[0];
if (!attributeNameElement)
return false;
var attributeName = attributeNameElement.textContent;
function removeZeroWidthSpaceRecursive(node)
{
if (node.nodeType === Node.TEXT_NODE) {
node.nodeValue = node.nodeValue.replace(/\u200B/g, "");
return;
}
if (node.nodeType !== Node.ELEMENT_NODE)
return;
for (var child = node.firstChild; child; child = child.nextSibling)
removeZeroWidthSpaceRecursive(child);
}
// Remove zero-width spaces that were added by nodeTitleInfo.
removeZeroWidthSpaceRecursive(attribute);
var config = new WebInspector.EditingConfig(this._attributeEditingCommitted.bind(this), this._editingCancelled.bind(this), attributeName);
function handleKeyDownEvents(event)
{
var isMetaOrCtrl = WebInspector.isMac() ?
event.metaKey && !event.shiftKey && !event.ctrlKey && !event.altKey :
event.ctrlKey && !event.shiftKey && !event.metaKey && !event.altKey;
if (isEnterKey(event) && (event.isMetaOrCtrlForTest || !config.multiline || isMetaOrCtrl))
return "commit";
else if (event.keyCode === WebInspector.KeyboardShortcut.Keys.Esc.code || event.keyIdentifier === "U+001B")
return "cancel";
else if (event.keyIdentifier === "U+0009") // Tab key
return "move-" + (event.shiftKey ? "backward" : "forward");
else {
WebInspector.handleElementValueModifications(event, attribute);
return "";
}
}
config.customFinishHandler = handleKeyDownEvents.bind(this);
this._editing = WebInspector.startEditing(attribute, config);
window.getSelection().setBaseAndExtent(elementForSelection, 0, elementForSelection, 1);
return true;
},
/**
* @param {Element} textNodeElement
*/
_startEditingTextNode: function(textNodeElement)
{
if (WebInspector.isBeingEdited(textNodeElement))
return true;
var textNode = this.representedObject;
// We only show text nodes inline in elements if the element only
// has a single child, and that child is a text node.
if (textNode.nodeType() === Node.ELEMENT_NODE && textNode.firstChild)
textNode = textNode.firstChild;
var container = textNodeElement.enclosingNodeOrSelfWithClass("webkit-html-text-node");
if (container)
container.textContent = textNode.nodeValue(); // Strip the CSS or JS highlighting if present.
var config = new WebInspector.EditingConfig(this._textNodeEditingCommitted.bind(this, textNode), this._editingCancelled.bind(this));
this._editing = WebInspector.startEditing(textNodeElement, config);
window.getSelection().setBaseAndExtent(textNodeElement, 0, textNodeElement, 1);
return true;
},
/**
* @param {Element=} tagNameElement
*/
_startEditingTagName: function(tagNameElement)
{
if (!tagNameElement) {
tagNameElement = this.listItemElement.getElementsByClassName("webkit-html-tag-name")[0];
if (!tagNameElement)
return false;
}
var tagName = tagNameElement.textContent;
if (WebInspector.ElementsTreeElement.EditTagBlacklist[tagName.toLowerCase()])
return false;
if (WebInspector.isBeingEdited(tagNameElement))
return true;
var closingTagElement = this._distinctClosingTagElement();
function keyupListener(event)
{
if (closingTagElement)
closingTagElement.textContent = "</" + tagNameElement.textContent + ">";
}
function editingComitted(element, newTagName)
{
tagNameElement.removeEventListener('keyup', keyupListener, false);
this._tagNameEditingCommitted.apply(this, arguments);
}
function editingCancelled()
{
tagNameElement.removeEventListener('keyup', keyupListener, false);
this._editingCancelled.apply(this, arguments);
}
tagNameElement.addEventListener('keyup', keyupListener, false);
var config = new WebInspector.EditingConfig(editingComitted.bind(this), editingCancelled.bind(this), tagName);
this._editing = WebInspector.startEditing(tagNameElement, config);
window.getSelection().setBaseAndExtent(tagNameElement, 0, tagNameElement, 1);
return true;
},
_startEditingAsHTML: function(commitCallback, error, initialValue)
{
if (error)
return;
if (this._editing)
return;
function consume(event)
{
if (event.eventPhase === Event.AT_TARGET)
event.consume(true);
}
initialValue = this._convertWhitespaceToEntities(initialValue);
this._htmlEditElement = document.createElement("div");
this._htmlEditElement.className = "source-code elements-tree-editor";
// Hide header items.
var child = this.listItemElement.firstChild;
while (child) {
child.style.display = "none";
child = child.nextSibling;
}
// Hide children item.
if (this._childrenListNode)
this._childrenListNode.style.display = "none";
// Append editor.
this.listItemElement.appendChild(this._htmlEditElement);
this.treeOutline.childrenListElement.parentElement.addEventListener("mousedown", consume, false);
this.updateSelection();
/**
* @param {Element} element
* @param {string} newValue
*/
function commit(element, newValue)
{
commitCallback(initialValue, newValue);
dispose.call(this);
}
function dispose()
{
delete this._editing;
// Remove editor.
this.listItemElement.removeChild(this._htmlEditElement);
delete this._htmlEditElement;
// Unhide children item.
if (this._childrenListNode)
this._childrenListNode.style.removeProperty("display");
// Unhide header items.
var child = this.listItemElement.firstChild;
while (child) {
child.style.removeProperty("display");
child = child.nextSibling;
}
this.treeOutline.childrenListElement.parentElement.removeEventListener("mousedown", consume, false);
this.updateSelection();
}
var config = new WebInspector.EditingConfig(commit.bind(this), dispose.bind(this));
config.setMultilineOptions(initialValue, { name: "xml", htmlMode: true }, "web-inspector-html", true, true);
this._editing = WebInspector.startEditing(this._htmlEditElement, config);
},
_attributeEditingCommitted: function(element, newText, oldText, attributeName, moveDirection)
{
delete this._editing;
var treeOutline = this.treeOutline;
/**
* @param {Protocol.Error=} error
*/
function moveToNextAttributeIfNeeded(error)
{
if (error)
this._editingCancelled(element, attributeName);
if (!moveDirection)
return;
treeOutline._updateModifiedNodes();
// Search for the attribute's position, and then decide where to move to.
var attributes = this.representedObject.attributes();
for (var i = 0; i < attributes.length; ++i) {
if (attributes[i].name !== attributeName)
continue;
if (moveDirection === "backward") {
if (i === 0)
this._startEditingTagName();
else
this._triggerEditAttribute(attributes[i - 1].name);
} else {
if (i === attributes.length - 1)
this._addNewAttribute();
else
this._triggerEditAttribute(attributes[i + 1].name);
}
return;
}
// Moving From the "New Attribute" position.
if (moveDirection === "backward") {
if (newText === " ") {
// Moving from "New Attribute" that was not edited
if (attributes.length > 0)
this._triggerEditAttribute(attributes[attributes.length - 1].name);
} else {
// Moving from "New Attribute" that holds new value
if (attributes.length > 1)
this._triggerEditAttribute(attributes[attributes.length - 2].name);
}
} else if (moveDirection === "forward") {
if (!/^\s*$/.test(newText))
this._addNewAttribute();
else
this._startEditingTagName();
}
}
if (!attributeName.trim() && !newText.trim()) {
element.removeSelf();
moveToNextAttributeIfNeeded.call(this);
return;
}
if (oldText !== newText) {
this.representedObject.setAttribute(attributeName, newText, moveToNextAttributeIfNeeded.bind(this));
return;
}
moveToNextAttributeIfNeeded.call(this);
},
_tagNameEditingCommitted: function(element, newText, oldText, tagName, moveDirection)
{
delete this._editing;
var self = this;
function cancel()
{
var closingTagElement = self._distinctClosingTagElement();
if (closingTagElement)
closingTagElement.textContent = "</" + tagName + ">";
self._editingCancelled(element, tagName);
moveToNextAttributeIfNeeded.call(self);
}
function moveToNextAttributeIfNeeded()
{
if (moveDirection !== "forward") {
this._addNewAttribute();
return;
}
var attributes = this.representedObject.attributes();
if (attributes.length > 0)
this._triggerEditAttribute(attributes[0].name);
else
this._addNewAttribute();
}
newText = newText.trim();
if (newText === oldText) {
cancel();
return;
}
var treeOutline = this.treeOutline;
var wasExpanded = this.expanded;
function changeTagNameCallback(error, nodeId)
{
if (error || !nodeId) {
cancel();
return;
}
var newTreeItem = treeOutline._selectNodeAfterEdit(null, wasExpanded, error, nodeId);
moveToNextAttributeIfNeeded.call(newTreeItem);
}
this.representedObject.setNodeName(newText, changeTagNameCallback);
},
/**
* @param {WebInspector.DOMNode} textNode
* @param {Element} element
* @param {string} newText
*/
_textNodeEditingCommitted: function(textNode, element, newText)
{
delete this._editing;
function callback()
{
this.updateTitle();
}
textNode.setNodeValue(newText, callback.bind(this));
},
/**
* @param {Element} element
* @param {*} context
*/
_editingCancelled: function(element, context)
{
delete this._editing;
// Need to restore attributes structure.
this.updateTitle();
},
_distinctClosingTagElement: function()
{
// FIXME: Improve the Tree Element / Outline Abstraction to prevent crawling the DOM
// For an expanded element, it will be the last element with class "close"
// in the child element list.
if (this.expanded) {
var closers = this._childrenListNode.querySelectorAll(".close");
return closers[closers.length-1];
}
// Remaining cases are single line non-expanded elements with a closing
// tag, or HTML elements without a closing tag (such as <br>). Return
// null in the case where there isn't a closing tag.
var tags = this.listItemElement.getElementsByClassName("webkit-html-tag");
return (tags.length === 1 ? null : tags[tags.length-1]);
},
/**
* @param {boolean=} onlySearchQueryChanged
*/
updateTitle: function(onlySearchQueryChanged)
{
// If we are editing, return early to prevent canceling the edit.
// After editing is committed updateTitle will be called.
if (this._editing)
return;
if (onlySearchQueryChanged) {
if (this._highlightResult)
this._updateSearchHighlight(false);
} else {
var highlightElement = document.createElement("span");
highlightElement.className = "highlight";
highlightElement.appendChild(this._nodeTitleInfo(WebInspector.linkifyURLAsNode).titleDOM);
this.title = highlightElement;
this._updateDecorations();
delete this._highlightResult;
}
delete this.selectionElement;
if (this.selected)
this.updateSelection();
this._preventFollowingLinksOnDoubleClick();
this._highlightSearchResults();
},
_createDecoratorElement: function()
{
var node = this.representedObject;
var decoratorMessages = [];
var parentDecoratorMessages = [];
for (var i = 0; i < this.treeOutline._nodeDecorators.length; ++i) {
var decorator = this.treeOutline._nodeDecorators[i];
var message = decorator.decorate(node);
if (message) {
decoratorMessages.push(message);
continue;
}
if (this.expanded || this._elementCloseTag)
continue;
message = decorator.decorateAncestor(node);
if (message)
parentDecoratorMessages.push(message)
}
if (!decoratorMessages.length && !parentDecoratorMessages.length)
return null;
var decoratorElement = document.createElement("div");
decoratorElement.addStyleClass("elements-gutter-decoration");
if (!decoratorMessages.length)
decoratorElement.addStyleClass("elements-has-decorated-children");
decoratorElement.title = decoratorMessages.concat(parentDecoratorMessages).join("\n");
return decoratorElement;
},
_updateDecorations: function()
{
if (this._decoratorElement && this._decoratorElement.parentElement)
this._decoratorElement.parentElement.removeChild(this._decoratorElement);
this._decoratorElement = this._createDecoratorElement();
if (this._decoratorElement && this.listItemElement)
this.listItemElement.insertBefore(this._decoratorElement, this.listItemElement.firstChild);
},
/**
* @param {WebInspector.DOMNode=} node
* @param {function(string, string, string, boolean=, string=)=} linkify
*/
_buildAttributeDOM: function(parentElement, name, value, node, linkify)
{
var hasText = (value.length > 0);
var attrSpanElement = parentElement.createChild("span", "webkit-html-attribute");
var attrNameElement = attrSpanElement.createChild("span", "webkit-html-attribute-name");
attrNameElement.textContent = name;
if (hasText)
attrSpanElement.appendChild(document.createTextNode("=\u200B\""));
if (linkify && (name === "src" || name === "href")) {
var rewrittenHref = node.resolveURL(value);
value = value.replace(/([\/;:\)\]\}])/g, "$1\u200B");
if (rewrittenHref === null) {
var attrValueElement = attrSpanElement.createChild("span", "webkit-html-attribute-value");
attrValueElement.textContent = value;
} else {
if (value.startsWith("data:"))
value = value.trimMiddle(60);
attrSpanElement.appendChild(linkify(rewrittenHref, value, "webkit-html-attribute-value", node.nodeName().toLowerCase() === "a"));
}
} else {
value = value.replace(/([\/;:\)\]\}])/g, "$1\u200B");
var attrValueElement = attrSpanElement.createChild("span", "webkit-html-attribute-value");
attrValueElement.textContent = value;
}
if (hasText)
attrSpanElement.appendChild(document.createTextNode("\""));
},
/**
* @param {function(string, string, string, boolean=, string=)=} linkify
*/
_buildTagDOM: function(parentElement, tagName, isClosingTag, isDistinctTreeElement, linkify)
{
var node = /** @type WebInspector.DOMNode */ (this.representedObject);
var classes = [ "webkit-html-tag" ];
if (isClosingTag && isDistinctTreeElement)
classes.push("close");
if (node.isInShadowTree())
classes.push("shadow");
var tagElement = parentElement.createChild("span", classes.join(" "));
tagElement.appendChild(document.createTextNode("<"));
var tagNameElement = tagElement.createChild("span", isClosingTag ? "" : "webkit-html-tag-name");
tagNameElement.textContent = (isClosingTag ? "/" : "") + tagName;
if (!isClosingTag && node.hasAttributes()) {
var attributes = node.attributes();
for (var i = 0; i < attributes.length; ++i) {
var attr = attributes[i];
tagElement.appendChild(document.createTextNode(" "));
this._buildAttributeDOM(tagElement, attr.name, attr.value, node, linkify);
}
}
tagElement.appendChild(document.createTextNode(">"));
parentElement.appendChild(document.createTextNode("\u200B"));
},
_convertWhitespaceToEntities: function(text)
{
var result = "";
var lastIndexAfterEntity = 0;
var charToEntity = WebInspector.ElementsTreeOutline.MappedCharToEntity;
for (var i = 0, size = text.length; i < size; ++i) {
var char = text.charAt(i);
if (charToEntity[char]) {
result += text.substring(lastIndexAfterEntity, i) + "&" + charToEntity[char] + ";";
lastIndexAfterEntity = i + 1;
}
}
if (result) {
result += text.substring(lastIndexAfterEntity);
return result;
}
return text;
},
_nodeTitleInfo: function(linkify)
{
var node = this.representedObject;
var info = {titleDOM: document.createDocumentFragment(), hasChildren: this.hasChildren};
switch (node.nodeType()) {
case Node.ATTRIBUTE_NODE:
var value = node.value || "\u200B"; // Zero width space to force showing an empty value.
this._buildAttributeDOM(info.titleDOM, node.name, value);
break;
case Node.ELEMENT_NODE:
var tagName = node.nodeNameInCorrectCase();
if (this._elementCloseTag) {
this._buildTagDOM(info.titleDOM, tagName, true, true);
info.hasChildren = false;
break;
}
this._buildTagDOM(info.titleDOM, tagName, false, false, linkify);
var textChild = this._singleTextChild(node);
var showInlineText = textChild && textChild.nodeValue().length < Preferences.maxInlineTextChildLength && !this.hasChildren;
if (!this.expanded && (!showInlineText && (this.treeOutline.isXMLMimeType || !WebInspector.ElementsTreeElement.ForbiddenClosingTagElements[tagName]))) {
if (this.hasChildren) {
var textNodeElement = info.titleDOM.createChild("span", "webkit-html-text-node bogus");
textNodeElement.textContent = "\u2026";
info.titleDOM.appendChild(document.createTextNode("\u200B"));
}
this._buildTagDOM(info.titleDOM, tagName, true, false);
}
// If this element only has a single child that is a text node,
// just show that text and the closing tag inline rather than
// create a subtree for them
if (showInlineText) {
var textNodeElement = info.titleDOM.createChild("span", "webkit-html-text-node");
textNodeElement.textContent = this._convertWhitespaceToEntities(textChild.nodeValue());
info.titleDOM.appendChild(document.createTextNode("\u200B"));
this._buildTagDOM(info.titleDOM, tagName, true, false);
info.hasChildren = false;
}
break;
case Node.TEXT_NODE:
if (node.parentNode && node.parentNode.nodeName().toLowerCase() === "script") {
var newNode = info.titleDOM.createChild("span", "webkit-html-text-node webkit-html-js-node");
newNode.textContent = node.nodeValue();
var javascriptSyntaxHighlighter = new WebInspector.DOMSyntaxHighlighter("text/javascript", true);
javascriptSyntaxHighlighter.syntaxHighlightNode(newNode);
} else if (node.parentNode && node.parentNode.nodeName().toLowerCase() === "style") {
var newNode = info.titleDOM.createChild("span", "webkit-html-text-node webkit-html-css-node");
newNode.textContent = node.nodeValue();
var cssSyntaxHighlighter = new WebInspector.DOMSyntaxHighlighter("text/css", true);
cssSyntaxHighlighter.syntaxHighlightNode(newNode);
} else {
info.titleDOM.appendChild(document.createTextNode("\""));
var textNodeElement = info.titleDOM.createChild("span", "webkit-html-text-node");
textNodeElement.textContent = this._convertWhitespaceToEntities(node.nodeValue());
info.titleDOM.appendChild(document.createTextNode("\""));
}
break;
case Node.COMMENT_NODE:
var commentElement = info.titleDOM.createChild("span", "webkit-html-comment");
commentElement.appendChild(document.createTextNode("<!--" + node.nodeValue() + "-->"));
break;
case Node.DOCUMENT_TYPE_NODE:
var docTypeElement = info.titleDOM.createChild("span", "webkit-html-doctype");
docTypeElement.appendChild(document.createTextNode("<!DOCTYPE " + node.nodeName()));
if (node.publicId) {
docTypeElement.appendChild(document.createTextNode(" PUBLIC \"" + node.publicId + "\""));
if (node.systemId)
docTypeElement.appendChild(document.createTextNode(" \"" + node.systemId + "\""));
} else if (node.systemId)
docTypeElement.appendChild(document.createTextNode(" SYSTEM \"" + node.systemId + "\""));
if (node.internalSubset)
docTypeElement.appendChild(document.createTextNode(" [" + node.internalSubset + "]"));
docTypeElement.appendChild(document.createTextNode(">"));
break;
case Node.CDATA_SECTION_NODE:
var cdataElement = info.titleDOM.createChild("span", "webkit-html-text-node");
cdataElement.appendChild(document.createTextNode("<![CDATA[" + node.nodeValue() + "]]>"));
break;
case Node.DOCUMENT_FRAGMENT_NODE:
var fragmentElement = info.titleDOM.createChild("span", "webkit-html-fragment");
fragmentElement.textContent = node.nodeNameInCorrectCase().collapseWhitespace();
if (node.isInShadowTree())
fragmentElement.addStyleClass("shadow");
break;
default:
info.titleDOM.appendChild(document.createTextNode(node.nodeNameInCorrectCase().collapseWhitespace()));
}
return info;
},
_singleTextChild: function(node)
{
if (!node)
return null;
var firstChild = node.firstChild;
if (!firstChild || firstChild.nodeType() !== Node.TEXT_NODE)
return null;
if (node.hasShadowRoots())
return null;
var sibling = firstChild.nextSibling;
return sibling ? null : firstChild;
},
_showInlineText: function(node)
{
if (node.nodeType() === Node.ELEMENT_NODE) {
var textChild = this._singleTextChild(node);
if (textChild && textChild.nodeValue().length < Preferences.maxInlineTextChildLength)
return true;
}
return false;
},
remove: function()
{
var parentElement = this.parent;
if (!parentElement)
return;
var self = this;
function removeNodeCallback(error, removedNodeId)
{
if (error)
return;
parentElement.removeChild(self);
parentElement.adjustCollapsedRange();
}
if (!this.representedObject.parentNode || this.representedObject.parentNode.nodeType() === Node.DOCUMENT_NODE)
return;
this.representedObject.removeNode(removeNodeCallback);
},
_editAsHTML: function()
{
var treeOutline = this.treeOutline;
var node = this.representedObject;
var parentNode = node.parentNode;
var index = node.index;
var wasExpanded = this.expanded;
function selectNode(error, nodeId)
{
if (error)
return;
// Select it and expand if necessary. We force tree update so that it processes dom events and is up to date.
treeOutline._updateModifiedNodes();
var newNode = parentNode ? parentNode.children[index] || parentNode : null;
if (!newNode)
return;
treeOutline.selectDOMNode(newNode, true);
if (wasExpanded) {
var newTreeItem = treeOutline.findTreeElement(newNode);
if (newTreeItem)
newTreeItem.expand();
}
}
function commitChange(initialValue, value)
{
if (initialValue !== value)
node.setOuterHTML(value, selectNode);
else
return;
}
node.getOuterHTML(this._startEditingAsHTML.bind(this, commitChange));
},
_copyHTML: function()
{
this.representedObject.copyNode();
},
_copyXPath: function()
{
this.representedObject.copyXPath(true);
},
_highlightSearchResults: function()
{
if (!this._searchQuery || !this._searchHighlightsVisible)
return;
if (this._highlightResult) {
this._updateSearchHighlight(true);
return;
}
var text = this.listItemElement.textContent;
var regexObject = createPlainTextSearchRegex(this._searchQuery, "gi");
var offset = 0;
var match = regexObject.exec(text);
var matchRanges = [];
while (match) {
matchRanges.push({ offset: match.index, length: match[0].length });
match = regexObject.exec(text);
}
// Fall back for XPath, etc. matches.
if (!matchRanges.length)
matchRanges.push({ offset: 0, length: text.length });
this._highlightResult = [];
WebInspector.highlightSearchResults(this.listItemElement, matchRanges, this._highlightResult);
},
_scrollIntoView: function()
{
function scrollIntoViewCallback(object)
{
function scrollIntoView()
{
this.scrollIntoViewIfNeeded(true);
}
if (object)
object.callFunction(scrollIntoView);
}
var node = /** @type {WebInspector.DOMNode} */ (this.representedObject);
WebInspector.RemoteObject.resolveNode(node, "", scrollIntoViewCallback);
},
__proto__: TreeElement.prototype
}
/**
* @constructor
*/
WebInspector.ElementsTreeUpdater = function(treeOutline)
{
WebInspector.domAgent.addEventListener(WebInspector.DOMAgent.Events.NodeInserted, this._nodeInserted, this);
WebInspector.domAgent.addEventListener(WebInspector.DOMAgent.Events.NodeRemoved, this._nodeRemoved, this);
WebInspector.domAgent.addEventListener(WebInspector.DOMAgent.Events.AttrModified, this._attributesUpdated, this);
WebInspector.domAgent.addEventListener(WebInspector.DOMAgent.Events.AttrRemoved, this._attributesUpdated, this);
WebInspector.domAgent.addEventListener(WebInspector.DOMAgent.Events.CharacterDataModified, this._characterDataModified, this);
WebInspector.domAgent.addEventListener(WebInspector.DOMAgent.Events.DocumentUpdated, this._documentUpdated, this);
WebInspector.domAgent.addEventListener(WebInspector.DOMAgent.Events.ChildNodeCountUpdated, this._childNodeCountUpdated, this);
this._treeOutline = treeOutline;
this._recentlyModifiedNodes = new Map();
}
WebInspector.ElementsTreeUpdater.prototype = {
/**
* @param {!WebInspector.DOMNode} node
* @param {boolean} isUpdated
* @param {WebInspector.DOMNode=} parentNode
*/
_nodeModified: function(node, isUpdated, parentNode)
{
if (this._treeOutline._visible)
this._updateModifiedNodesSoon();
var entry = /** @type {WebInspector.ElementsTreeUpdater.UpdateEntry} */ (this._recentlyModifiedNodes.get(node));
if (!entry) {
entry = new WebInspector.ElementsTreeUpdater.UpdateEntry(isUpdated, parentNode);
this._recentlyModifiedNodes.put(node, entry);
return;
}
entry.isUpdated |= isUpdated;
if (parentNode)
entry.parent = parentNode;
},
_documentUpdated: function(event)
{
var inspectedRootDocument = event.data;
this._reset();
if (!inspectedRootDocument)
return;
this._treeOutline.rootDOMNode = inspectedRootDocument;
},
_attributesUpdated: function(event)
{
this._nodeModified(event.data.node, true);
},
_characterDataModified: function(event)
{
this._nodeModified(event.data, true);
},
_nodeInserted: function(event)
{
this._nodeModified(event.data, false, event.data.parentNode);
},
_nodeRemoved: function(event)
{
this._nodeModified(event.data.node, false, event.data.parent);
},
_childNodeCountUpdated: function(event)
{
var treeElement = this._treeOutline.findTreeElement(event.data);
if (treeElement)
treeElement.hasChildren = event.data.hasChildNodes();
},
_updateModifiedNodesSoon: function()
{
if (this._updateModifiedNodesTimeout)
return;
this._updateModifiedNodesTimeout = setTimeout(this._updateModifiedNodes.bind(this), 50);
},
_updateModifiedNodes: function()
{
if (this._updateModifiedNodesTimeout) {
clearTimeout(this._updateModifiedNodesTimeout);
delete this._updateModifiedNodesTimeout;
}
var updatedParentTreeElements = [];
var hidePanelWhileUpdating = this._recentlyModifiedNodes.size() > 10;
if (hidePanelWhileUpdating) {
var treeOutlineContainerElement = this._treeOutline.element.parentNode;
this._treeOutline.element.addStyleClass("hidden");
var originalScrollTop = treeOutlineContainerElement ? treeOutlineContainerElement.scrollTop : 0;
}
var keys = this._recentlyModifiedNodes.keys();
for (var i = 0, size = keys.length; i < size; ++i) {
var node = keys[i];
var entry = this._recentlyModifiedNodes.get(node);
var parent = entry.parent;
if (parent === this._treeOutline._rootDOMNode) {
// Document's children have changed, perform total update.
this._treeOutline.update();
this._treeOutline.element.removeStyleClass("hidden");
return;
}
if (entry.isUpdated) {
var nodeItem = this._treeOutline.findTreeElement(node);
if (nodeItem)
nodeItem.updateTitle();
}
if (!parent)
continue;
var parentNodeItem = this._treeOutline.findTreeElement(parent);
if (parentNodeItem && !parentNodeItem.alreadyUpdatedChildren) {
parentNodeItem.updateChildren();
parentNodeItem.alreadyUpdatedChildren = true;
updatedParentTreeElements.push(parentNodeItem);
}
}
for (var i = 0; i < updatedParentTreeElements.length; ++i)
delete updatedParentTreeElements[i].alreadyUpdatedChildren;
if (hidePanelWhileUpdating) {
this._treeOutline.element.removeStyleClass("hidden");
if (originalScrollTop)
treeOutlineContainerElement.scrollTop = originalScrollTop;
this._treeOutline.updateSelection();
}
this._recentlyModifiedNodes.clear();
},
_reset: function()
{
this._treeOutline.rootDOMNode = null;
this._treeOutline.selectDOMNode(null, false);
WebInspector.domAgent.hideDOMNodeHighlight();
this._recentlyModifiedNodes.clear();
}
}
/**
* @constructor
* @param {boolean} isUpdated
* @param {WebInspector.DOMNode=} parent
*/
WebInspector.ElementsTreeUpdater.UpdateEntry = function(isUpdated, parent)
{
this.isUpdated = isUpdated;
if (parent)
this.parent = parent;
}