pjs/suite/browser/navigatorDD.js

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JavaScript

/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* - Kevin Puetz (puetzk@iastate.edu)
* - Ben Goodger <ben@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
var DROP_BEFORE = -1;
var DROP_ON = 0;
var DROP_AFTER = 1;
function _RDF(aType)
{
return "http://www.w3.org/1999/02/22-rdf-syntax-ns#" + aType;
}
function NC_RDF(aType)
{
return "http://home.netscape.com/NC-rdf#" + aType;
}
var RDFUtils = {
getResource: function(aString)
{
return this.rdf.GetResource(aString, true);
},
getTarget: function(aDS, aSourceID, aPropertyID)
{
var source = this.getResource(aSourceID);
var property = this.getResource(aPropertyID);
return aDS.GetTarget(source, property, true);
},
getValueFromResource: function(aResource)
{
aResource = aResource.QueryInterface(Components.interfaces.nsIRDFResource);
return aResource ? aResource.Value : null;
},
_rdf: null,
get rdf() {
if (!this._rdf) {
this._rdf = Components.classes["@mozilla.org/rdf/rdf-service;1"]
.getService(Components.interfaces.nsIRDFService);
}
return this._rdf;
}
};
function isBookmark(aURI)
{
var db = document.getElementById("innermostBox").database;
var typeValue = RDFUtils.getTarget(db, aURI, _RDF("type"));
typeValue = RDFUtils.getValueFromResource(typeValue);
return (typeValue == NC_RDF("BookmarkSeparator") ||
typeValue == NC_RDF("Bookmark") ||
typeValue == NC_RDF("Folder"))
}
var personalToolbarObserver = {
onDragStart: function (aEvent, aXferData, aDragAction)
{
// Prevent dragging out of menus on non Win32 platforms.
// a) on Mac drag from menus is generally regarded as being satanic
// b) on Linux, this causes an X-server crash, see bug 79003.
// Since we're not doing D&D into menus properly at this point, it seems
// fair enough to disable it on non-Win32 platforms. There is no hang
// or crash associated with this on Windows, so we'll leave the functionality
// there.
if (navigator.platform != "Win32" && aEvent.target.localName != "toolbarbutton")
return;
if (aEvent.target.localName == "menu" ||
(aEvent.target.localName == "toolbarbutton" && aEvent.target.getAttribute("type") == "menu")) {
if (aEvent.target.getAttribute("type") == "http://home.netscape.com/NC-rdf#Folder") {
var child = aEvent.target.childNodes[0];
if (child && child.localName == "menupopup")
child.hidePopup();
else {
var parent = aEvent.target.parentNode;
if (parent && parent.localName == "menupopup")
parent.hidePopup();
}
}
}
var personalToolbar = document.getElementById("PersonalToolbar");
if (aEvent.target == personalToolbar) return;
var db = document.getElementById("innermostBox").database;
var uri = aEvent.target.id;
if (!isBookmark(uri)) return;
var url = RDFUtils.getTarget(db, uri, NC_RDF("URL"));
if (url)
url = url.QueryInterface(Components.interfaces.nsIRDFLiteral).Value;
else
url = "";
var name = RDFUtils.getTarget(db, uri, NC_RDF("Name"));
if (name)
name = name.QueryInterface(Components.interfaces.nsIRDFLiteral).Value;
else
name = "";
var urlString = url + "\n" + name;
var htmlString = "<A HREF='" + uri + "'>" + name + "</A>";
aXferData.data = new TransferData();
aXferData.data.addDataForFlavour("moz/rdfitem", uri);
aXferData.data.addDataForFlavour("text/x-moz-url", urlString);
aXferData.data.addDataForFlavour("text/html", htmlString);
aXferData.data.addDataForFlavour("text/unicode", url);
},
onDrop: function (aEvent, aXferData, aDragSession)
{
var xferData = aXferData.data.split("\n");
var elementRes = RDFUtils.getResource(xferData[0]);
var personalToolbarRes = RDFUtils.getResource("NC:PersonalToolbarFolder");
var inner = document.getElementById("innermostBox");
var childDB = inner.database;
const kCtrContractID = "@mozilla.org/rdf/container;1";
const kCtrIID = Components.interfaces.nsIRDFContainer;
var rdfContainer = Components.classes[kCtrContractID].createInstance(kCtrIID);
// if dragged url is already bookmarked, remove it from current location first
var parentContainer = findParentContainer(aDragSession.sourceNode);
if (parentContainer)
{
rdfContainer.Init(childDB, parentContainer);
rdfContainer.RemoveElement(elementRes, false);
}
// determine charset of link
var linkCharset = aDragSession.sourceDocument ? aDragSession.sourceDocument.characterSet : null;
// determine title of link
var linkTitle;
// look it up in bookmarks
var bookmarksDS = RDFUtils.rdf.GetDataSource("rdf:bookmarks");
var nameRes = RDFUtils.getResource(NC_RDF("Name"));
var nameFromBookmarks = bookmarksDS.GetTarget(elementRes, nameRes, true);
if (nameFromBookmarks)
nameFromBookmarks = nameFromBookmarks.QueryInterface(Components.interfaces.nsIRDFLiteral);
if (nameFromBookmarks) {
linkTitle = nameFromBookmarks.Value;
}
else if (xferData.length >= 2)
linkTitle = xferData[1]
else
{
// look up this URL's title in global history
var potentialTitle = null;
var historyDS = RDFUtils.rdf.GetDataSource("rdf:history");
var titlePropRes = RDFUtils.getResource(NC_RDF("Name"));
var titleFromHistory = historyDS.GetTarget(elementRes, titlePropRes, true);
if (titleFromHistory)
titleFromHistory = titleFromHistory.QueryInterface(Components.interfaces.nsIRDFLiteral);
if (titleFromHistory)
potentialTitle = titleFromHistory.Value;
linkTitle = potentialTitle;
}
var dropElement = aEvent.target.id;
var dropElementRes, dropIndex, dropPosition;
if (dropElement == "innermostBox")
{
dropElementRes = personalToolbarRes;
dropPosition = DROP_ON;
}
else
{
dropElementRes = RDFUtils.getResource(dropElement);
rdfContainer.Init(childDB, personalToolbarRes);
dropIndex = rdfContainer.IndexOf(dropElementRes);
if (dropPosition == undefined)
dropPosition = determineDropPosition(aEvent, true);
}
switch (dropPosition) {
case DROP_BEFORE:
if (dropIndex<1) dropIndex = 1;
insertBookmarkAt(xferData[0], linkTitle, linkCharset, personalToolbarRes, dropIndex);
break;
case DROP_ON:
insertBookmarkAt(xferData[0], linkTitle, linkCharset, dropElementRes, -1);
break;
case DROP_AFTER:
default:
// compensate for badly calculated dropIndex
rdfContainer.Init(childDB, personalToolbarRes);
if (dropIndex < rdfContainer.GetCount()) ++dropIndex;
if (dropIndex<0) dropIndex = 0;
insertBookmarkAt(xferData[0], linkTitle, linkCharset, personalToolbarRes, dropIndex);
break;
}
return true;
},
mCurrentDragOverButton: null,
mCurrentDragPosition: null,
onDragExit: function (aEvent, aDragSession)
{
if (this.mCurrentDragOverButton)
{
this.mCurrentDragOverButton.removeAttribute("dragover-left");
this.mCurrentDragOverButton.removeAttribute("dragover-right");
this.mCurrentDragOverButton.removeAttribute("dragover-top");
this.mCurrentDragOverButton.removeAttribute("open");
}
},
onDragOver: function (aEvent, aFlavour, aDragSession)
{
var dropPosition = determineDropPosition(aEvent, true);
// bail if drop target is not a valid bookmark item or folder
var inner = document.getElementById("innermostBox");
if (aEvent.target.parentNode != inner && aEvent.target != inner)
{
aDragSession.canDrop = false;
return false;
}
if (this.mCurrentDragOverButton != aEvent.target ||
(this.mCurrentDragOverButton == aEvent.target &&
this.mCurrentDragPosition != dropPosition))
{
if (this.mCurrentDragOverButton)
{
this.mCurrentDragOverButton.removeAttribute("dragover-left");
this.mCurrentDragOverButton.removeAttribute("dragover-right");
this.mCurrentDragOverButton.removeAttribute("dragover-top");
this.mCurrentDragOverButton.removeAttribute("open");
}
this.mCurrentDragOverButton = aEvent.target;
this.mCurrentDragPosition = dropPosition;
}
switch (dropPosition)
{
case DROP_BEFORE:
aEvent.target.setAttribute("dragover-left", "true");
break;
case DROP_AFTER:
aEvent.target.setAttribute("dragover-right", "true");
break;
case DROP_ON:
default:
if (aEvent.target.getAttribute("container") == "true") {
aEvent.target.setAttribute("dragover-top", "true");
//cant open a menu during a drag! suck!
//aEvent.target.setAttribute("open", "true");
}
break;
}
return true;
},
getSupportedFlavours: function ()
{
var flavourSet = new FlavourSet();
flavourSet.appendFlavour("moz/rdfitem");
// application/x-moz-file
flavourSet.appendFlavour("text/unicode");
return flavourSet;
}
};
var proxyIconDNDObserver = {
onDragStart: function (aEvent, aXferData, aDragAction)
{
var urlBar = document.getElementById("urlbar");
// XXX - do we want to allow the user to set a blank page to their homepage?
// if so then we want to modify this a little to set about:blank as
// the homepage in the event of an empty urlbar.
if (!urlBar.value) return;
var urlString = urlBar.value + "\n" + window._content.document.title;
var htmlString = "<a href=\"" + urlBar.value + "\">" + urlBar.value + "</a>";
aXferData.data = new TransferData();
aXferData.data.addDataForFlavour("text/x-moz-url", urlString);
aXferData.data.addDataForFlavour("text/unicode", urlBar.value);
aXferData.data.addDataForFlavour("text/html", htmlString);
}
};
var homeButtonObserver = {
onDragStart: function (aEvent, aXferData, aDragAction)
{
var homepage = nsPreferences.getLocalizedUnicharPref("browser.startup.homepage", "about:blank");
if (homepage)
{
// XXX find a readable title string for homepage, perhaps do a history lookup.
var htmlString = "<a href=\"" + homepage + "\">" + homepage + "</a>";
aXferData.data = new TransferData();
aXferData.data.addDataForFlavour("text/x-moz-url", homepage + "\n" + homepage);
aXferData.data.addDataForFlavour("text/html", htmlString);
aXferData.data.addDataForFlavour("text/unicode", homepage);
}
},
onDrop: function (aEvent, aXferData, aDragSession)
{
var url = retrieveURLFromData(aXferData.data, aXferData.flavour.contentType);
var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"].getService(Components.interfaces.nsIPromptService);
var pressedVal = { };
var promptTitle = gNavigatorBundle.getString("droponhometitle");
var promptMsg = gNavigatorBundle.getString("droponhomemsg");
var okButton = gNavigatorBundle.getString("droponhomeokbutton");
promptService.confirmEx(window, promptTitle, promptMsg,
(promptService.BUTTON_TITLE_IS_STRING * promptService.BUTTON_POS_0) +
(promptService.BUTTON_TITLE_CANCEL * promptService.BUTTON_POS_1),
okButton, null, null, null, {value:0}, pressedVal);
if (pressedVal.value == 0) {
nsPreferences.setUnicharPref("browser.startup.homepage", url);
setTooltipText("home-button", url);
}
},
onDragOver: function (aEvent, aFlavour, aDragSession)
{
var statusTextFld = document.getElementById("statusbar-display");
statusTextFld.label = gNavigatorBundle.getString("droponhomebutton");
aDragSession.dragAction = Components.interfaces.nsIDragService.DRAGDROP_ACTION_LINK;
},
onDragExit: function (aEvent, aDragSession)
{
var statusTextFld = document.getElementById("statusbar-display");
statusTextFld.label = "";
},
getSupportedFlavours: function ()
{
var flavourSet = new FlavourSet();
flavourSet.appendFlavour("application/x-moz-file", "nsIFile");
flavourSet.appendFlavour("text/x-moz-url");
flavourSet.appendFlavour("text/unicode");
return flavourSet;
}
};
var goButtonObserver = {
onDragOver: function(aEvent, aFlavour, aDragSession)
{
aEvent.target.setAttribute("dragover", "true");
return true;
},
onDragExit: function (aEvent, aDragSession)
{
aEvent.target.removeAttribute("dragover");
},
onDrop: function (aEvent, aXferData, aDragSession)
{
var xferData = aXferData.data.split("\n");
var uri = xferData[0] ? xferData[0] : xferData[1];
if (uri)
loadURI(uri);
},
getSupportedFlavours: function ()
{
var flavourSet = new FlavourSet();
flavourSet.appendFlavour("application/x-moz-file", "nsIFile");
flavourSet.appendFlavour("text/x-moz-url");
flavourSet.appendFlavour("text/unicode");
return flavourSet;
}
};
var searchButtonObserver = {
onDragOver: function(aEvent, aFlavour, aDragSession)
{
aEvent.target.setAttribute("dragover", "true");
return true;
},
onDragExit: function (aEvent, aDragSession)
{
aEvent.target.removeAttribute("dragover");
},
onDrop: function (aEvent, aXferData, aDragSession)
{
var xferData = aXferData.data.split("\n");
var uri = xferData[1] ? xferData[1] : xferData[0];
if (uri)
OpenSearch('internet',false, uri);
},
getSupportedFlavours: function ()
{
var flavourSet = new FlavourSet();
flavourSet.appendFlavour("application/x-moz-file", "nsIFile");
flavourSet.appendFlavour("text/x-moz-url");
flavourSet.appendFlavour("text/unicode");
return flavourSet;
}
};
var gDidOpen = false;
var bookmarksButtonObserver = {
onDragOver: function(aEvent, aFlavour, aDragSession)
{
aEvent.target.setAttribute("dragover", "true");
if (!gDidOpen) {
aEvent.target.firstChild.showPopup(document.getElementById("bookmarks-button"), -1, -1, "menupopup", "bottomleft", "bottomleft");
gDidOpen = true;
}
return true;
},
getSupportedFlavours: function ()
{
var flavourSet = new FlavourSet();
flavourSet.appendFlavour("application/x-moz-file", "nsIFile");
flavourSet.appendFlavour("text/x-moz-url");
return flavourSet;
}
};
var gCurrentTarget = null;
var gCurrentDragOverMenu = null;
function closeOpenMenu()
{
if (gCurrentDragOverMenu && gCurrentTarget.firstChild != gCurrentDragOverMenu) {
if (gCurrentTarget.parentNode != gCurrentDragOverMenu) {
gMenuIsOpen = false;
gCurrentDragOverMenu.hidePopup();
gCurrentDragOverMenu = null;
}
}
}
var gMenuIsOpen = false;
var menuDNDObserver = {
onDragOver: function(aEvent, aFlavour, aDragSession)
{
// if we're a folder just one level deep, open it
var dropPosition = determineDropPosition(aEvent, aEvent.target.parentNode != document.getElementById("bookmarks-button").firstChild);
gCurrentTarget = aEvent.target;
if (aEvent.target.firstChild && aEvent.target.firstChild.localName == "menupopup") {
if (aEvent.target.parentNode == document.getElementById("bookmarks-button").firstChild) {
if (gCurrentDragOverMenu && gCurrentDragOverMenu != aEvent.target.firstChild) {
gCurrentDragOverMenu.hidePopup();
gCurrentDragOverMenu = null;
gMenuIsOpen = false;
}
if (!gMenuIsOpen) {
gCurrentDragOverMenu = aEvent.target.firstChild;
aEvent.target.firstChild.showPopup(aEvent.target, -1, -1, "menupopup", "topright, topright");
gMenuIsOpen = true;
}
}
else {
aEvent.target.setAttribute("menuactive", "true");
}
}
// remove drag attributes from old item once we move to a new item
if (this.mCurrentDragOverItem != aEvent.target) {
if (this.mCurrentDragOverItem) {
this.mCurrentDragOverItem.removeAttribute("dragover-top");
this.mCurrentDragOverItem.removeAttribute("dragover-bottom");
this.mCurrentDragOverItem.removeAttribute("menuactive");
}
this.mCurrentDragOverItem = aEvent.target;
}
// if there's an open submenu and we're not over it or one of its children, close it
if (gCurrentDragOverMenu && aEvent.target.firstChild != gCurrentDragOverMenu) {
if (aEvent.target.parentNode != gCurrentDragOverMenu) {
setTimeout(function() { closeOpenMenu(); },500);
}
}
// ensure appropriate feedback
switch (dropPosition) {
case DROP_BEFORE:
aEvent.target.setAttribute("dragover-bottom", "true");
break;
case DROP_AFTER:
aEvent.target.setAttribute("dragover-top", "true");
break;
}
},
mCurrentDragOverItem: null,
onDragExit: function (aEvent, aDragSession)
{
// remove drag attribute from current item once we leave the popup
if (this.mCurrentDragOverItem) {
this.mCurrentDragOverItem.removeAttribute("dragover-top");
this.mCurrentDragOverItem.removeAttribute("dragover-bottom");
}
},
onDrop: function (aEvent, aXferData, aDragSession)
{
var xferData = aXferData.data.split("\n");
var elementRes = RDFUtils.getResource(xferData[0]);
var bookmarksButton = document.getElementById("bookmarks-button");
var childDB = bookmarksButton.database;
var rdfContainer = Components.classes["@mozilla.org/rdf/container;1"].createInstance(Components.interfaces.nsIRDFContainer);
// if dragged url is already bookmarked, remove it from current location first
var parentContainer = findParentContainer(aDragSession.sourceNode);
if (parentContainer) {
rdfContainer.Init(childDB, parentContainer);
rdfContainer.RemoveElement(elementRes, false);
}
parentContainer = findParentContainer(aEvent.target);
// determine charset of link
var linkCharset = aDragSession.sourceDocument ? aDragSession.sourceDocument.characterSet : null;
// determine title of link
var linkTitle;
// look it up in bookmarks
var bookmarksDS = RDFUtils.rdf.GetDataSource("rdf:bookmarks");
var nameRes = RDFUtils.getResource(NC_RDF("Name"));
var nameFromBookmarks = bookmarksDS.GetTarget(elementRes, nameRes, true);
if (nameFromBookmarks)
nameFromBookmarks = nameFromBookmarks.QueryInterface(Components.interfaces.nsIRDFLiteral);
if (nameFromBookmarks)
linkTitle = nameFromBookmarks.Value;
else if (xferData.length >= 2)
linkTitle = xferData[1]
else {
// look up this URL's title in global history
var historyDS = RDFUtils.rdf.GetDataSource("rdf:history");
var titlePropRes = RDFUtils.getResource(NC_RDF("Name"));
var titleFromHistory = historyDS.GetTarget(elementRes, titlePropRes, true);
if (titleFromHistory)
titleFromHistory = titleFromHistory.QueryInterface(Components.interfaces.nsIRDFLiteral);
if (titleFromHistory)
linkTitle = titleFromHistory.Value;
}
var dropElement = aEvent.target.id;
var dropElementRes, dropIndex, dropPosition;
dropElementRes = RDFUtils.getResource(dropElement);
rdfContainer.Init(childDB, parentContainer);
dropIndex = rdfContainer.IndexOf(dropElementRes);
dropPosition = determineDropPosition(aEvent, aEvent.target.parentNode != document.getElementById("bookmarks-button").firstChild);
switch (dropPosition) {
case DROP_BEFORE:
--dropIndex;
if (dropIndex<1) dropIndex = 1;
insertBookmarkAt(xferData[0], linkTitle, linkCharset, parentContainer, dropIndex);
break;
case DROP_ON:
insertBookmarkAt(xferData[0], linkTitle, linkCharset, dropElementRes, -1);
break;
case DROP_AFTER:
default:
// compensate for badly calculated dropIndex
if (dropIndex < rdfContainer.GetCount()) ++dropIndex;
if (dropIndex<0) dropIndex = 0;
--dropIndex;
insertBookmarkAt(xferData[0], linkTitle, linkCharset, parentContainer, dropIndex);
break;
}
// if user isn't rearranging within the menu, close it
if (aDragSession.sourceNode.localName != "menuitem" && aDragSession.sourceNode.localName != "menu")
setTimeout(function() { if (gCurrentDragOverMenu) gCurrentDragOverMenu.hidePopup(); document.getElementById("bookmarks-button").firstChild.hidePopup(); gDidOpen = false; }, 190);
return true;
},
getSupportedFlavours: function () {
var flavourSet = new FlavourSet();
flavourSet.appendFlavour("application/x-moz-file", "nsIFile");
flavourSet.appendFlavour("text/x-moz-url");
return flavourSet;
}
};
function determineDropPosition(aEvent, aAllowDropOn)
{
var overButtonBoxObject = aEvent.target.boxObject.QueryInterface(Components.interfaces.nsIBoxObject);
// most things only drop on the left or right
var regionCount = 2;
// you can drop ONTO containers, so there is a "middle" region
if (aAllowDropOn && aEvent.target.getAttribute("container") == "true" &&
aEvent.target.getAttribute("type") == "menu")
return DROP_ON;
var measure;
var coordValue;
var clientCoordValue;
if (aEvent.target.localName == "menuitem" || aEvent.target.localName == "menu") {
measure = overButtonBoxObject.height/regionCount;
coordValue = overButtonBoxObject.y;
clientCoordValue = aEvent.clientY;
}
else if (aEvent.target.localName == "toolbarbutton") {
measure = overButtonBoxObject.width/regionCount;
coordValue = overButtonBoxObject.x;
clientCoordValue = aEvent.clientX;
}
else
return 0;
// in the first region?
if (clientCoordValue < (coordValue + measure))
return DROP_BEFORE;
// in the last region?
if (clientCoordValue >= (coordValue + (regionCount - 1)*measure))
return DROP_AFTER;
// must be in the middle somewhere
return DROP_ON;
}
// returns the parent resource of the dragged element. This is determined
// by inspecting the source element of the drag and walking up the DOM tree
// to find the appropriate containing node.
function findParentContainer(aElement)
{
if (!aElement) return null;
switch (aElement.localName) {
case "toolbarbutton":
var box = aElement.parentNode;
return RDFUtils.getResource(box.getAttribute("ref"));
case "menu":
case "menuitem":
var menu = aElement.parentNode.parentNode;
if (menu.getAttribute("type") != "http://home.netscape.com/NC-rdf#Folder")
return RDFUtils.getResource("NC:BookmarksRoot");
return RDFUtils.getResource(menu.id);
case "treecell":
var treeitem = aElement.parentNode.parentNode.parentNode.parentNode;
var res = treeitem.getAttribute("ref");
if (!res)
res = treeitem.id;
return RDFUtils.getResource(res);
}
return null;
}
function insertBookmarkAt(aURL, aTitle, aCharset, aFolderRes, aIndex)
{
const kBMSContractID = "@mozilla.org/browser/bookmarks-service;1";
const kBMSIID = Components.interfaces.nsIBookmarksService;
const kBMS = Components.classes[kBMSContractID].getService(kBMSIID);
kBMS.insertBookmarkInFolder(aURL, aTitle, aCharset, aFolderRes, aIndex);
}