gecko-dev/browser/base/content/content.js

732 строки
22 KiB
JavaScript
Исходник Обычный вид История

/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
let {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource:///modules/ContentWebRTC.jsm");
Cu.import("resource://gre/modules/InlineSpellChecker.jsm");
Cu.import("resource://gre/modules/InlineSpellCheckerContent.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "E10SUtils",
"resource:///modules/E10SUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",
"resource://gre/modules/BrowserUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "ContentLinkHandler",
"resource:///modules/ContentLinkHandler.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "LoginManagerContent",
"resource://gre/modules/LoginManagerContent.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "InsecurePasswordUtils",
"resource://gre/modules/InsecurePasswordUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "PluginContent",
"resource:///modules/PluginContent.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
"resource://gre/modules/PrivateBrowsingUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "FormSubmitObserver",
"resource:///modules/FormSubmitObserver.jsm");
// TabChildGlobal
var global = this;
// Load the form validation popup handler
var formSubmitObserver = new FormSubmitObserver(content, this);
addMessageListener("Browser:HideSessionRestoreButton", function (message) {
// Hide session restore button on about:home
let doc = content.document;
let container;
if (doc.documentURI.toLowerCase() == "about:home" &&
(container = doc.getElementById("sessionRestoreContainer"))) {
container.hidden = true;
}
});
addMessageListener("Browser:Reload", function(message) {
/* First, we'll try to use the session history object to reload so
* that framesets are handled properly. If we're in a special
* window (such as view-source) that has no session history, fall
* back on using the web navigation's reload method.
*/
let webNav = docShell.QueryInterface(Ci.nsIWebNavigation);
try {
let sh = webNav.sessionHistory;
if (sh)
webNav = sh.QueryInterface(Ci.nsIWebNavigation);
} catch (e) {
}
let reloadFlags = message.data.flags;
let handlingUserInput;
try {
handlingUserInput = content.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindowUtils)
.setHandlingUserInput(message.data.handlingUserInput);
webNav.reload(reloadFlags);
} catch (e) {
} finally {
handlingUserInput.destruct();
}
});
addMessageListener("MixedContent:ReenableProtection", function() {
docShell.mixedContentChannel = null;
});
addEventListener("DOMFormHasPassword", function(event) {
InsecurePasswordUtils.checkForInsecurePasswords(event.target);
LoginManagerContent.onFormPassword(event);
});
addEventListener("DOMAutoComplete", function(event) {
LoginManagerContent.onUsernameInput(event);
});
addEventListener("blur", function(event) {
LoginManagerContent.onUsernameInput(event);
});
if (Services.appinfo.processType == Services.appinfo.PROCESS_TYPE_CONTENT) {
let handleContentContextMenu = function (event) {
let defaultPrevented = event.defaultPrevented;
if (!Services.prefs.getBoolPref("dom.event.contextmenu.enabled")) {
let plugin = null;
try {
plugin = event.target.QueryInterface(Ci.nsIObjectLoadingContent);
} catch (e) {}
if (plugin && plugin.displayedType == Ci.nsIObjectLoadingContent.TYPE_PLUGIN) {
// Don't open a context menu for plugins.
return;
}
defaultPrevented = false;
}
if (!defaultPrevented) {
let editFlags = SpellCheckHelper.isEditable(event.target, content);
let spellInfo;
if (editFlags &
(SpellCheckHelper.EDITABLE | SpellCheckHelper.CONTENTEDITABLE)) {
spellInfo =
InlineSpellCheckerContent.initContextMenu(event, editFlags, this);
}
sendSyncMessage("contextmenu", { editFlags, spellInfo }, { event });
}
}
Cc["@mozilla.org/eventlistenerservice;1"]
.getService(Ci.nsIEventListenerService)
.addSystemEventListener(global, "contextmenu", handleContentContextMenu, true);
}
let AboutHomeListener = {
init: function(chromeGlobal) {
chromeGlobal.addEventListener('AboutHomeLoad', this, false, true);
},
get isAboutHome() {
return content.document.documentURI.toLowerCase() == "about:home";
},
handleEvent: function(aEvent) {
if (!this.isAboutHome) {
return;
}
switch (aEvent.type) {
case "AboutHomeLoad":
this.onPageLoad();
break;
case "AboutHomeSearchEvent":
this.onSearch(aEvent);
break;
case "click":
this.onClick(aEvent);
break;
case "pagehide":
this.onPageHide(aEvent);
break;
}
},
receiveMessage: function(aMessage) {
if (!this.isAboutHome) {
return;
}
switch (aMessage.name) {
case "AboutHome:Update":
this.onUpdate(aMessage.data);
break;
case "AboutHome:FocusInput":
this.onFocusInput();
break;
}
},
onUpdate: function(aData) {
let doc = content.document;
if (aData.showRestoreLastSession && !PrivateBrowsingUtils.isContentWindowPrivate(content))
doc.getElementById("launcher").setAttribute("session", "true");
// Inject search engine and snippets URL.
let docElt = doc.documentElement;
// set the following attributes BEFORE searchEngineName, which triggers to
// show the snippets when it's set.
docElt.setAttribute("snippetsURL", aData.snippetsURL);
if (aData.showKnowYourRights)
docElt.setAttribute("showKnowYourRights", "true");
docElt.setAttribute("snippetsVersion", aData.snippetsVersion);
docElt.setAttribute("searchEngineName", aData.defaultEngineName);
},
onPageLoad: function() {
let doc = content.document;
if (doc.documentElement.hasAttribute("hasBrowserHandlers")) {
return;
}
doc.documentElement.setAttribute("hasBrowserHandlers", "true");
addMessageListener("AboutHome:Update", this);
addMessageListener("AboutHome:FocusInput", this);
addEventListener("click", this, true);
addEventListener("pagehide", this, true);
// XXX bug 738646 - when Marketplace is launched, remove this statement and
// the hidden attribute set on the apps button in aboutHome.xhtml
if (Services.prefs.getPrefType("browser.aboutHome.apps") == Services.prefs.PREF_BOOL &&
Services.prefs.getBoolPref("browser.aboutHome.apps"))
doc.getElementById("apps").removeAttribute("hidden");
sendAsyncMessage("AboutHome:RequestUpdate");
doc.addEventListener("AboutHomeSearchEvent", this, true, true);
},
onClick: function(aEvent) {
if (!aEvent.isTrusted || // Don't trust synthetic events
aEvent.button == 2 || aEvent.target.localName != "button") {
return;
}
let originalTarget = aEvent.originalTarget;
let ownerDoc = originalTarget.ownerDocument;
if (ownerDoc.documentURI != "about:home") {
// This shouldn't happen, but we're being defensive.
return;
}
let elmId = originalTarget.getAttribute("id");
switch (elmId) {
case "restorePreviousSession":
sendAsyncMessage("AboutHome:RestorePreviousSession");
ownerDoc.getElementById("launcher").removeAttribute("session");
break;
case "downloads":
sendAsyncMessage("AboutHome:Downloads");
break;
case "bookmarks":
sendAsyncMessage("AboutHome:Bookmarks");
break;
case "history":
sendAsyncMessage("AboutHome:History");
break;
case "apps":
sendAsyncMessage("AboutHome:Apps");
break;
case "addons":
sendAsyncMessage("AboutHome:Addons");
break;
case "sync":
sendAsyncMessage("AboutHome:Sync");
break;
case "settings":
sendAsyncMessage("AboutHome:Settings");
break;
}
},
onPageHide: function(aEvent) {
if (aEvent.target.defaultView.frameElement) {
return;
}
removeMessageListener("AboutHome:Update", this);
removeEventListener("click", this, true);
removeEventListener("pagehide", this, true);
if (aEvent.target.documentElement) {
aEvent.target.documentElement.removeAttribute("hasBrowserHandlers");
}
},
onSearch: function(aEvent) {
sendAsyncMessage("AboutHome:Search", { searchData: aEvent.detail });
},
onFocusInput: function () {
let searchInput = content.document.getElementById("searchText");
if (searchInput) {
searchInput.focus();
}
},
};
AboutHomeListener.init(this);
// An event listener for custom "WebChannelMessageToChrome" events on pages
addEventListener("WebChannelMessageToChrome", function (e) {
// if target is window then we want the document principal, otherwise fallback to target itself.
let principal = e.target.nodePrincipal ? e.target.nodePrincipal : e.target.document.nodePrincipal;
if (e.detail) {
sendAsyncMessage("WebChannelMessageToChrome", e.detail, null, principal);
} else {
Cu.reportError("WebChannel message failed. No message detail.");
}
}, true, true);
// Add message listener for "WebChannelMessageToContent" messages from chrome scripts
addMessageListener("WebChannelMessageToContent", function (e) {
if (e.data) {
content.dispatchEvent(new content.CustomEvent("WebChannelMessageToContent", {
detail: Cu.cloneInto({
id: e.data.id,
message: e.data.message,
}, content),
}));
} else {
Cu.reportError("WebChannel message failed. No message data.");
}
});
let ContentSearchMediator = {
whitelist: new Set([
"about:home",
"about:newtab",
]),
init: function (chromeGlobal) {
chromeGlobal.addEventListener("ContentSearchClient", this, true, true);
addMessageListener("ContentSearch", this);
},
handleEvent: function (event) {
if (this._contentWhitelisted) {
this._sendMsg(event.detail.type, event.detail.data);
}
},
receiveMessage: function (msg) {
if (msg.data.type == "AddToWhitelist") {
for (let uri of msg.data.data) {
this.whitelist.add(uri);
}
this._sendMsg("AddToWhitelistAck");
return;
}
if (this._contentWhitelisted) {
this._fireEvent(msg.data.type, msg.data.data);
}
},
get _contentWhitelisted() {
return this.whitelist.has(content.document.documentURI);
},
_sendMsg: function (type, data=null) {
sendAsyncMessage("ContentSearch", {
type: type,
data: data,
});
},
_fireEvent: function (type, data=null) {
let event = Cu.cloneInto({
detail: {
type: type,
data: data,
},
}, content);
content.dispatchEvent(new content.CustomEvent("ContentSearchService",
event));
},
};
ContentSearchMediator.init(this);
// Lazily load the finder code
addMessageListener("Finder:Initialize", function () {
let {RemoteFinderListener} = Cu.import("resource://gre/modules/RemoteFinder.jsm", {});
new RemoteFinderListener(global);
});
let ClickEventHandler = {
init: function init() {
Cc["@mozilla.org/eventlistenerservice;1"]
.getService(Ci.nsIEventListenerService)
.addSystemEventListener(global, "click", this, true);
},
handleEvent: function(event) {
if (!event.isTrusted || event.defaultPrevented || event.button == 2) {
return;
}
let originalTarget = event.originalTarget;
let ownerDoc = originalTarget.ownerDocument;
if (!ownerDoc) {
return;
}
// Handle click events from about pages
if (ownerDoc.documentURI.startsWith("about:certerror")) {
this.onAboutCertError(originalTarget, ownerDoc);
return;
} else if (ownerDoc.documentURI.startsWith("about:blocked")) {
this.onAboutBlocked(originalTarget, ownerDoc);
return;
} else if (ownerDoc.documentURI.startsWith("about:neterror")) {
this.onAboutNetError(originalTarget, ownerDoc);
}
let [href, node] = this._hrefAndLinkNodeForClickEvent(event);
let json = { button: event.button, shiftKey: event.shiftKey,
ctrlKey: event.ctrlKey, metaKey: event.metaKey,
altKey: event.altKey, href: null, title: null,
bookmark: false };
if (href) {
json.href = href;
if (node) {
json.title = node.getAttribute("title");
if (event.button == 0 && !event.ctrlKey && !event.shiftKey &&
!event.altKey && !event.metaKey) {
json.bookmark = node.getAttribute("rel") == "sidebar";
if (json.bookmark) {
event.preventDefault(); // Need to prevent the pageload.
}
}
}
sendAsyncMessage("Content:Click", json);
return;
}
// This might be middle mouse navigation.
if (event.button == 1) {
sendAsyncMessage("Content:Click", json);
}
},
onAboutCertError: function (targetElement, ownerDoc) {
let docshell = ownerDoc.defaultView.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIWebNavigation)
.QueryInterface(Ci.nsIDocShell);
let serhelper = Cc["@mozilla.org/network/serialization-helper;1"]
.getService(Ci.nsISerializationHelper);
let serializedSSLStatus = "";
try {
let serializable = docShell.failedChannel.securityInfo
.QueryInterface(Ci.nsISSLStatusProvider)
.SSLStatus
.QueryInterface(Ci.nsISerializable);
serializedSSLStatus = serhelper.serializeToString(serializable);
} catch (e) { }
sendAsyncMessage("Browser:CertExceptionError", {
location: ownerDoc.location.href,
elementId: targetElement.getAttribute("id"),
isTopFrame: (ownerDoc.defaultView.parent === ownerDoc.defaultView),
sslStatusAsString: serializedSSLStatus
});
},
onAboutBlocked: function (targetElement, ownerDoc) {
sendAsyncMessage("Browser:SiteBlockedError", {
location: ownerDoc.location.href,
isMalware: /e=malwareBlocked/.test(ownerDoc.documentURI),
elementId: targetElement.getAttribute("id"),
isTopFrame: (ownerDoc.defaultView.parent === ownerDoc.defaultView)
});
},
onAboutNetError: function (targetElement, ownerDoc) {
let elmId = targetElement.getAttribute("id");
if (elmId != "errorTryAgain" || !/e=netOffline/.test(ownerDoc.documentURI)) {
return;
}
sendSyncMessage("Browser:NetworkError", {});
},
/**
* Extracts linkNode and href for the current click target.
*
* @param event
* The click event.
* @return [href, linkNode].
*
* @note linkNode will be null if the click wasn't on an anchor
* element (or XLink).
*/
_hrefAndLinkNodeForClickEvent: function(event) {
function isHTMLLink(aNode) {
// Be consistent with what nsContextMenu.js does.
return ((aNode instanceof content.HTMLAnchorElement && aNode.href) ||
(aNode instanceof content.HTMLAreaElement && aNode.href) ||
aNode instanceof content.HTMLLinkElement);
}
let node = event.target;
while (node && !isHTMLLink(node)) {
node = node.parentNode;
}
if (node)
return [node.href, node];
// If there is no linkNode, try simple XLink.
let href, baseURI;
node = event.target;
while (node && !href) {
if (node.nodeType == content.Node.ELEMENT_NODE) {
href = node.getAttributeNS("http://www.w3.org/1999/xlink", "href");
if (href)
baseURI = node.ownerDocument.baseURIObject;
}
node = node.parentNode;
}
// In case of XLink, we don't return the node we got href from since
// callers expect <a>-like elements.
// Note: makeURI() will throw if aUri is not a valid URI.
return [href ? BrowserUtils.makeURI(href, null, baseURI).spec : null, null];
}
};
ClickEventHandler.init();
ContentLinkHandler.init(this);
// TODO: Load this lazily so the JSM is run only if a relevant event/message fires.
let pluginContent = new PluginContent(global);
addEventListener("DOMWebNotificationClicked", function(event) {
sendAsyncMessage("DOMWebNotificationClicked", {});
}, false);
let PageStyleHandler = {
init: function() {
addMessageListener("PageStyle:Switch", this);
addMessageListener("PageStyle:Disable", this);
// Send a CPOW to the parent so that it can synchronously request
// the list of style sheets.
sendSyncMessage("PageStyle:SetSyncHandler", {}, {syncHandler: this});
},
get markupDocumentViewer() {
return docShell.contentViewer;
},
// Called synchronously via CPOW from the parent.
getStyleSheetInfo: function() {
let styleSheets = this._filterStyleSheets(this.getAllStyleSheets());
return {
styleSheets: styleSheets,
authorStyleDisabled: this.markupDocumentViewer.authorStyleDisabled,
preferredStyleSheetSet: content.document.preferredStyleSheetSet
};
},
// Called synchronously via CPOW from the parent.
getAllStyleSheets: function(frameset = content) {
let selfSheets = Array.slice(frameset.document.styleSheets);
let subSheets = Array.map(frameset.frames, frame => this.getAllStyleSheets(frame));
return selfSheets.concat(...subSheets);
},
receiveMessage: function(msg) {
switch (msg.name) {
case "PageStyle:Switch":
this.markupDocumentViewer.authorStyleDisabled = false;
this._stylesheetSwitchAll(content, msg.data.title);
break;
case "PageStyle:Disable":
this.markupDocumentViewer.authorStyleDisabled = true;
break;
}
},
_stylesheetSwitchAll: function (frameset, title) {
if (!title || this._stylesheetInFrame(frameset, title)) {
this._stylesheetSwitchFrame(frameset, title);
}
for (let i = 0; i < frameset.frames.length; i++) {
// Recurse into sub-frames.
this._stylesheetSwitchAll(frameset.frames[i], title);
}
},
_stylesheetSwitchFrame: function (frame, title) {
var docStyleSheets = frame.document.styleSheets;
for (let i = 0; i < docStyleSheets.length; ++i) {
let docStyleSheet = docStyleSheets[i];
if (docStyleSheet.title) {
docStyleSheet.disabled = (docStyleSheet.title != title);
} else if (docStyleSheet.disabled) {
docStyleSheet.disabled = false;
}
}
},
_stylesheetInFrame: function (frame, title) {
return Array.some(frame.document.styleSheets, (styleSheet) => styleSheet.title == title);
},
_filterStyleSheets: function(styleSheets) {
let result = [];
for (let currentStyleSheet of styleSheets) {
if (!currentStyleSheet.title)
continue;
// Skip any stylesheets that don't match the screen media type.
if (currentStyleSheet.media.length > 0) {
let mediaQueryList = currentStyleSheet.media.mediaText;
if (!content.matchMedia(mediaQueryList).matches) {
continue;
}
}
result.push({title: currentStyleSheet.title,
disabled: currentStyleSheet.disabled});
}
return result;
},
};
PageStyleHandler.init();
// Keep a reference to the translation content handler to avoid it it being GC'ed.
let trHandler = null;
if (Services.prefs.getBoolPref("browser.translation.detectLanguage")) {
Cu.import("resource:///modules/translation/TranslationContentHandler.jsm");
trHandler = new TranslationContentHandler(global, docShell);
}
let DOMFullscreenHandler = {
_fullscreenDoc: null,
init: function() {
addMessageListener("DOMFullscreen:Approved", this);
addMessageListener("DOMFullscreen:CleanUp", this);
addEventListener("MozEnteredDomFullscreen", this);
},
receiveMessage: function(aMessage) {
switch(aMessage.name) {
case "DOMFullscreen:Approved": {
if (this._fullscreenDoc) {
Services.obs.notifyObservers(this._fullscreenDoc,
"fullscreen-approved",
"");
}
break;
}
case "DOMFullscreen:CleanUp": {
this._fullscreenDoc = null;
break;
}
}
},
handleEvent: function(aEvent) {
if (aEvent.type == "MozEnteredDomFullscreen") {
this._fullscreenDoc = aEvent.target;
sendAsyncMessage("MozEnteredDomFullscreen", {
origin: this._fullscreenDoc.nodePrincipal.origin,
});
}
}
};
DOMFullscreenHandler.init();
ContentWebRTC.init();
addMessageListener("webrtc:Allow", ContentWebRTC);
addMessageListener("webrtc:Deny", ContentWebRTC);
addMessageListener("webrtc:StopSharing", ContentWebRTC);
function gKeywordURIFixup(fixupInfo) {
fixupInfo.QueryInterface(Ci.nsIURIFixupInfo);
// Ignore info from other docshells
let parent = fixupInfo.consumer.QueryInterface(Ci.nsIDocShellTreeItem).sameTypeRootTreeItem;
if (parent != docShell)
return;
let data = {};
for (let f of Object.keys(fixupInfo)) {
if (f == "consumer" || typeof fixupInfo[f] == "function")
continue;
if (fixupInfo[f] && fixupInfo[f] instanceof Ci.nsIURI) {
data[f] = fixupInfo[f].spec;
} else {
data[f] = fixupInfo[f];
}
}
sendAsyncMessage("Browser:URIFixup", data);
}
Services.obs.addObserver(gKeywordURIFixup, "keyword-uri-fixup", false);
addEventListener("unload", () => {
Services.obs.removeObserver(gKeywordURIFixup, "keyword-uri-fixup");
}, false);
addMessageListener("Browser:AppTab", function(message) {
docShell.isAppTab = message.data.isAppTab;
});
let WebBrowserChrome = {
onBeforeLinkTraversal: function(originalTarget, linkURI, linkNode, isAppTab) {
return BrowserUtils.onBeforeLinkTraversal(originalTarget, linkURI, linkNode, isAppTab);
},
// Check whether this URI should load in the current process
shouldLoadURI: function(aDocShell, aURI, aReferrer) {
if (!E10SUtils.shouldLoadURI(aDocShell, aURI, aReferrer)) {
E10SUtils.redirectLoad(aDocShell, aURI, aReferrer);
return false;
}
return true;
},
};
if (Services.appinfo.processType == Services.appinfo.PROCESS_TYPE_CONTENT) {
let tabchild = docShell.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsITabChild);
tabchild.webBrowserChrome = WebBrowserChrome;
}
addEventListener("pageshow", function(event) {
if (event.target == content.document) {
sendAsyncMessage("PageVisibility:Show", {
persisted: event.persisted,
});
}
});