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gecko/toolkit/content/widgets/browser.xml

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<?xml version="1.0"?>
<!-- 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/. -->
<!DOCTYPE bindings [
<!ENTITY % findBarDTD SYSTEM "chrome://global/locale/findbar.dtd" >
%findBarDTD;
]>
<bindings id="browserBindings"
xmlns="http://www.mozilla.org/xbl"
xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<binding id="browser" extends="xul:browser">
<content clickthrough="never">
<children/>
</content>
<implementation type="application/javascript" implements="nsIAccessibleProvider, nsIObserver, nsIDOMEventListener, nsIFrameRequestCallback">
<property name="accessibleType" readonly="true">
<getter>
<![CDATA[
return Components.interfaces.nsIAccessibleProvider.OuterDoc;
]]>
</getter>
</property>
<property name="autoscrollEnabled">
<getter>
<![CDATA[
if (this.getAttribute("autoscroll") == "false")
return false;
var enabled = true;
try {
enabled = this.mPrefs.getBoolPref("general.autoScroll");
}
catch(ex) {
}
return enabled;
]]>
</getter>
</property>
<property name="canGoBack"
onget="return this.webNavigation.canGoBack;"
readonly="true"/>
<property name="canGoForward"
onget="return this.webNavigation.canGoForward;"
readonly="true"/>
<method name="goBack">
<body>
<![CDATA[
var webNavigation = this.webNavigation;
if (webNavigation.canGoBack) {
try {
this.userTypedClear++;
webNavigation.goBack();
} finally {
if (this.userTypedClear)
this.userTypedClear--;
}
}
]]>
</body>
</method>
<method name="goForward">
<body>
<![CDATA[
var webNavigation = this.webNavigation;
if (webNavigation.canGoForward) {
try {
this.userTypedClear++;
webNavigation.goForward();
} finally {
if (this.userTypedClear)
this.userTypedClear--;
}
}
]]>
</body>
</method>
<method name="reload">
<body>
<![CDATA[
const nsIWebNavigation = Components.interfaces.nsIWebNavigation;
const flags = nsIWebNavigation.LOAD_FLAGS_NONE;
this.reloadWithFlags(flags);
]]>
</body>
</method>
<method name="reloadWithFlags">
<parameter name="aFlags"/>
<body>
<![CDATA[
this.webNavigation.reload(aFlags);
]]>
</body>
</method>
<method name="stop">
<body>
<![CDATA[
const nsIWebNavigation = Components.interfaces.nsIWebNavigation;
const flags = nsIWebNavigation.STOP_ALL;
this.webNavigation.stop(flags);
]]>
</body>
</method>
<!-- throws exception for unknown schemes -->
<method name="loadURI">
<parameter name="aURI"/>
<parameter name="aReferrerURI"/>
<parameter name="aCharset"/>
<body>
<![CDATA[
const nsIWebNavigation = Components.interfaces.nsIWebNavigation;
const flags = nsIWebNavigation.LOAD_FLAGS_NONE;
this.loadURIWithFlags(aURI, flags, aReferrerURI, aCharset);
]]>
</body>
</method>
<!-- throws exception for unknown schemes -->
<method name="loadURIWithFlags">
<parameter name="aURI"/>
<parameter name="aFlags"/>
<parameter name="aReferrerURI"/>
<parameter name="aCharset"/>
<parameter name="aPostData"/>
<body>
<![CDATA[
if (!aURI)
aURI = "about:blank";
if (aCharset) {
try {
this.docShell.parentCharset = aCharset;
}
catch (e) {
}
}
if (!(aFlags & this.webNavigation.LOAD_FLAGS_FROM_EXTERNAL))
this.userTypedClear++;
try {
this.webNavigation.loadURI(aURI, aFlags, aReferrerURI, aPostData, null);
} finally {
if (this.userTypedClear)
this.userTypedClear--;
}
]]>
</body>
</method>
<method name="goHome">
<body>
<![CDATA[
try {
this.loadURI(this.homePage);
}
catch (e) {
}
]]>
</body>
</method>
<property name="homePage">
<getter>
<![CDATA[
var uri;
if (this.hasAttribute("homepage"))
uri = this.getAttribute("homepage");
else
uri = "http://www.mozilla.org/"; // widget pride
return uri;
]]>
</getter>
<setter>
<![CDATA[
this.setAttribute("homepage", val);
return val;
]]>
</setter>
</property>
<method name="gotoIndex">
<parameter name="aIndex"/>
<body>
<![CDATA[
try {
this.userTypedClear++;
this.webNavigation.gotoIndex(aIndex);
} finally {
if (this.userTypedClear)
this.userTypedClear--;
}
]]>
</body>
</method>
<property name="currentURI"
onget="return this.webNavigation.currentURI;"
readonly="true"/>
<property name="documentURI"
onget="return this.contentDocument.documentURIObject;"
readonly="true"/>
<property name="preferences"
onget="return this.mPrefs.QueryInterface(Components.interfaces.nsIPrefService);"
readonly="true"/>
<field name="_docShell">null</field>
<property name="docShell"
onget="return this._docShell || (this._docShell = this.boxObject.QueryInterface(Components.interfaces.nsIContainerBoxObject).docShell);"
readonly="true"/>
<property name="docShellIsActive">
<getter>
<![CDATA[
return this.docShell && this.docShell.isActive;
]]>
</getter>
<setter>
<![CDATA[
if (this.docShell)
return this.docShell.isActive = val;
return false;
]]>
</setter>
</property>
<property name="imageDocument"
readonly="true">
<getter>
<![CDATA[
var document = this.contentDocument;
if (!document || !(document instanceof Ci.nsIImageDocument))
return null;
try {
return {width: document.imageRequest.image.width, height: document.imageRequest.image.height };
} catch (e) {}
return null;
]]>
</getter>
</property>
<property name="isRemoteBrowser"
onget="return (this.getAttribute('remote') == 'true');"
readonly="true"/>
<property name="messageManager"
onget="return this.QueryInterface(Components.interfaces.nsIFrameLoaderOwner).frameLoader.messageManager;"
readonly="true"/>
<field name="_webNavigation">null</field>
<property name="webNavigation"
readonly="true">
<getter>
<![CDATA[
if (!this._webNavigation)
this._webNavigation = this.docShell.QueryInterface(Components.interfaces.nsIWebNavigation);
return this._webNavigation;
]]>
</getter>
</property>
<field name="_webBrowserFind">null</field>
<property name="webBrowserFind"
readonly="true">
<getter>
<![CDATA[
if (!this._webBrowserFind)
this._webBrowserFind = this.docShell.QueryInterface(Components.interfaces.nsIInterfaceRequestor).getInterface(Components.interfaces.nsIWebBrowserFind);
return this._webBrowserFind;
]]>
</getter>
</property>
<method name="getTabBrowser">
<body>
<![CDATA[
var tabBrowser = this.parentNode;
while (tabBrowser && tabBrowser.localName != "tabbrowser")
tabBrowser = tabBrowser.parentNode;
return tabBrowser;
]]>
</body>
</method>
<field name="_fastFind">null</field>
<property name="fastFind"
readonly="true">
<getter>
<![CDATA[
if (!this._fastFind) {
if (!("@mozilla.org/typeaheadfind;1" in Components.classes))
return null;
var tabBrowser = this.getTabBrowser();
if (tabBrowser && "fastFind" in tabBrowser)
return this._fastFind = tabBrowser.fastFind;
if (!this.docShell)
return null;
this._fastFind = Components.classes["@mozilla.org/typeaheadfind;1"]
.createInstance(Components.interfaces.nsITypeAheadFind);
this._fastFind.init(this.docShell);
}
return this._fastFind;
]]>
</getter>
</property>
<property name="webProgress"
readonly="true"
onget="return this.docShell.QueryInterface(Components.interfaces.nsIInterfaceRequestor).getInterface(Components.interfaces.nsIWebProgress);"/>
<field name="_contentWindow">null</field>
<property name="contentWindow"
readonly="true"
onget="return this._contentWindow || (this._contentWindow = this.docShell.QueryInterface(Components.interfaces.nsIInterfaceRequestor).getInterface(Components.interfaces.nsIDOMWindow));"/>
<property name="sessionHistory"
onget="return this.webNavigation.sessionHistory;"
readonly="true"/>
<property name="markupDocumentViewer"
onget="return this.docShell.contentViewer.QueryInterface(Components.interfaces.nsIMarkupDocumentViewer);"
readonly="true"/>
<property name="contentViewerEdit"
onget="return this.docShell.contentViewer.QueryInterface(Components.interfaces.nsIContentViewerEdit);"
readonly="true"/>
<property name="contentViewerFile"
onget="return this.docShell.contentViewer.QueryInterface(Components.interfaces.nsIContentViewerFile);"
readonly="true"/>
<property name="contentDocument"
onget="return this.webNavigation.document;"
readonly="true"/>
<property name="contentTitle"
onget="return this.contentDocument.title;"
readonly="true"/>
<property name="characterSet"
onget="return this.contentDocument.characterSet;"
readonly="true"/>
<property name="contentPrincipal"
onget="return this.contentDocument.nodePrincipal;"
readonly="true"/>
<property name="showWindowResizer"
onset="if (val) this.setAttribute('showresizer', 'true');
else this.removeAttribute('showresizer');
return val;"
onget="return this.getAttribute('showresizer') == 'true';"/>
<field name="mPrefs" readonly="true">
Components.classes['@mozilla.org/preferences-service;1']
.getService(Components.interfaces.nsIPrefBranch);
</field>
<field name="mAtomService" readonly="true">
Components.classes['@mozilla.org/atom-service;1']
.getService(Components.interfaces.nsIAtomService);
</field>
<field name="_mStrBundle">null</field>
<property name="mStrBundle">
<getter>
<![CDATA[
if (!this._mStrBundle) {
// need to create string bundle manually instead of using <xul:stringbundle/>
// see bug 63370 for details
this._mStrBundle = Components.classes["@mozilla.org/intl/stringbundle;1"]
.getService(Components.interfaces.nsIStringBundleService)
.createBundle("chrome://global/locale/browser.properties");
}
return this._mStrBundle;
]]></getter>
</property>
<method name="addProgressListener">
<parameter name="aListener"/>
<parameter name="aNotifyMask"/>
<body>
<![CDATA[
if (!aNotifyMask) {
aNotifyMask = Components.interfaces.nsIWebProgress.NOTIFY_ALL;
}
this.webProgress.addProgressListener(aListener, aNotifyMask);
]]>
</body>
</method>
<method name="removeProgressListener">
<parameter name="aListener"/>
<body>
<![CDATA[
this.webProgress.removeProgressListener(aListener);
]]>
</body>
</method>
<method name="attachFormFill">
<body>
<![CDATA[
if (!this.mFormFillAttached && this.hasAttribute("autocompletepopup")) {
// hoop up the form fill autocomplete controller
var controller = Components.classes["@mozilla.org/satchel/form-fill-controller;1"].
getService(Components.interfaces.nsIFormFillController);
var popup = document.getElementById(this.getAttribute("autocompletepopup"));
if (popup) {
controller.attachToBrowser(this.docShell, popup.QueryInterface(Components.interfaces.nsIAutoCompletePopup));
this.mFormFillAttached = true;
}
}
]]>
</body>
</method>
<method name="detachFormFill">
<body>
<![CDATA[
if (this.mFormFillAttached) {
// hoop up the form fill autocomplete controller
var controller = Components.classes["@mozilla.org/satchel/form-fill-controller;1"].
getService(Components.interfaces.nsIFormFillController);
controller.detachFromBrowser(this.docShell);
this.mFormFillAttached = false;
}
]]>
</body>
</method>
<method name="findChildShell">
<parameter name="aDocShell"/>
<parameter name="aSoughtURI"/>
<body>
<![CDATA[
if (aDocShell.QueryInterface(Components.interfaces.nsIWebNavigation)
.currentURI.spec == aSoughtURI.spec)
return aDocShell;
var node = aDocShell.QueryInterface(
Components.interfaces.nsIDocShellTreeNode);
for (var i = 0; i < node.childCount; ++i) {
var docShell = node.getChildAt(i);
docShell = this.findChildShell(docShell, aSoughtURI);
if (docShell)
return docShell;
}
return null;
]]>
</body>
</method>
<method name="onPageShow">
<parameter name="aEvent"/>
<body>
<![CDATA[
this.attachFormFill();
if (this.pageReport) {
var i = 0;
while (i < this.pageReport.length) {
// Filter out irrelevant reports.
if (this.pageReport[i].requestingWindow &&
(this.pageReport[i].requestingWindow.document ==
this.pageReport[i].requestingDocument))
i++;
else
this.pageReport.splice(i, 1);
}
if (this.pageReport.length == 0) {
this.pageReport = null;
this.updatePageReport();
}
}
]]>
</body>
</method>
<method name="onPageHide">
<parameter name="aEvent"/>
<body>
<![CDATA[
if (this.pageReport) {
this.pageReport = null;
this.updatePageReport();
}
// Delete the feeds cache if we're hiding the topmost page
// (as opposed to one of its iframes).
if (this.feeds && aEvent.target == this.contentDocument)
this.feeds = null;
if (!this.docShell || !this.fastFind)
return;
var tabBrowser = this.getTabBrowser();
if (!tabBrowser || !("fastFind" in tabBrowser) ||
tabBrowser.selectedBrowser == this)
this.fastFind.setDocShell(this.docShell);
if (this._scrollable) {
var doc =
this._scrollable.ownerDocument || this._scrollable.document;
if (doc == aEvent.target) {
this._autoScrollPopup.hidePopup();
}
}
]]>
</body>
</method>
<method name="updatePageReport">
<body>
<![CDATA[
var event = document.createEvent("Events");
event.initEvent("DOMUpdatePageReport", true, true);
this.dispatchEvent(event);
]]>
</body>
</method>
<method name="onPopupBlocked">
<parameter name="evt"/>
<body>
<![CDATA[
if (!this.pageReport) {
this.pageReport = new Array();
}
var obj = { requestingWindow: evt.requestingWindow,
// Record the current document in the requesting window
// before it can change.
requestingDocument: evt.requestingWindow.document,
popupWindowURI: evt.popupWindowURI,
popupWindowFeatures: evt.popupWindowFeatures,
popupWindowName: evt.popupWindowName };
this.pageReport.push(obj);
this.pageReport.reported = false;
this.updatePageReport();
]]>
</body>
</method>
<field name="pageReport">null</field>
<property name="securityUI">
<getter>
<![CDATA[
// Bug 666809 - SecurityUI support for e10s
if (!this.docShell)
return null;
if (!this.docShell.securityUI) {
const SECUREBROWSERUI_CONTRACTID = "@mozilla.org/secure_browser_ui;1";
if (!this.hasAttribute("disablesecurity") &&
SECUREBROWSERUI_CONTRACTID in Components.classes) {
var securityUI = Components.classes[SECUREBROWSERUI_CONTRACTID]
.createInstance(Components.interfaces.nsISecureBrowserUI);
securityUI.init(this.contentWindow);
}
}
return this.docShell.securityUI;
]]>
</getter>
<setter>
<![CDATA[
this.docShell.securityUI = val;
]]>
</setter>
</property>
<!--
This field tracks the location bar state. The value that the user typed
in to the location bar may not be changed while this field is zero.
However invoking a load will temporarily increase this field to allow
the location bar to be updated to the new URL.
Case 1: Anchor scroll
The user appends the anchor to the URL. This sets the location bar
into typed state, and disables changes to the location bar. The user
then requests the scroll. loadURIWithFlags temporarily increases the
flag by 1 so that the anchor scroll's location change resets the
location bar state.
Case 2: Interrupted load
The user types in and submits the URL. This triggers an asynchronous
network load which increases the flag by 2. (The temporary increase
from loadURIWithFlags is not noticeable in this case.) When the load
is interrupted the flag returns to zero, and the location bar stays
in typed state.
Case 3: New load
This works like case 2, but as the load is not interrupted the
location changes while the flag is still 2 thus resetting the
location bar state.
Case 4: Corrected load
This is a combination of case 2 and case 3, except that the original
load is interrupted by the new load. Normally cancelling and starting
a new load would reset the flag to 0 and then increase it to 2 again.
However both actions occur as a consequence of the loadURIWithFlags
invocation, which adds its temporary increase in to the mix. Since
the new URL would have been typed in the flag would have been reset
before loadURIWithFlags incremented it. The interruption resets the
flag to 0 and increases it to 2. Although loadURIWithFlags will
decrement the flag it remains at 1 thus allowing the location bar
state to be reset when the new load changes the location.
This case also applies when loading into a new browser, as this
interrupts the default load of about:blank.
-->
<field name="userTypedClear">
1
</field>
<field name="_userTypedValue">
null
</field>
<property name="userTypedValue"
onget="return this._userTypedValue;"
onset="this.userTypedClear = 0; return this._userTypedValue = val;"/>
<field name="mFormFillAttached">
false
</field>
<field name="isShowingMessage">
false
</field>
<field name="droppedLinkHandler">
null
</field>
<field name="mIconURL">null</field>
<!-- This is managed by the tabbrowser -->
<field name="lastURI">null</field>
<field name="mDestroyed">false</field>
<constructor>
<![CDATA[
try {
if (this.docShell && !this.hasAttribute("disablehistory")) {
var os = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
os.addObserver(this, "browser:purge-session-history", false);
// wire up session history
this.webNavigation.sessionHistory =
Components.classes["@mozilla.org/browser/shistory;1"]
.createInstance(Components.interfaces.nsISHistory);
// enable global history if we weren't told otherwise
if (!this.hasAttribute("disableglobalhistory"))
this.docShell.useGlobalHistory = true;
}
}
catch (e) {
Components.utils.reportError(e);
}
try {
var securityUI = this.securityUI;
}
catch (e) {
}
// Listen for first load for lazy attachment to form fill controller
this.addEventListener("pageshow", this.onPageShow, true);
this.addEventListener("pagehide", this.onPageHide, true);
this.addEventListener("DOMPopupBlocked", this.onPopupBlocked, true);
]]>
</constructor>
<destructor>
<![CDATA[
this.destroy();
]]>
</destructor>
<!-- This is necessary because the destructor doesn't always get called when
we are removed from a tabbrowser. This will be explicitly called by tabbrowser -->
<method name="destroy">
<body>
<![CDATA[
if (this.mDestroyed)
return;
this.mDestroyed = true;
if (!this.hasAttribute("disablehistory")) {
var os = Components.classes["@mozilla.org/observer-service;1"]
.getService(Components.interfaces.nsIObserverService);
try {
os.removeObserver(this, "browser:purge-session-history");
} catch (ex) {
// It's not clear why this sometimes throws an exception.
}
}
this.detachFormFill();
this._fastFind = null;
this._webBrowserFind = null;
// The feeds cache can keep the document inside this browser alive.
this.feeds = null;
this.lastURI = null;
this.removeEventListener("pageshow", this.onPageShow, true);
this.removeEventListener("pagehide", this.onPageHide, true);
this.removeEventListener("DOMPopupBlocked", this.onPopupBlocked, true);
if (this._autoScrollNeedsCleanup) {
// we polluted the global scope, so clean it up
this._autoScrollPopup.parentNode.removeChild(this._autoScrollPopup);
}
]]>
</body>
</method>
<method name="observe">
<parameter name="aSubject"/>
<parameter name="aTopic"/>
<parameter name="aState"/>
<body>
<![CDATA[
if (aTopic != "browser:purge-session-history" || !this.sessionHistory)
return;
// place the entry at current index at the end of the history list, so it won't get removed
if (this.sessionHistory.index < this.sessionHistory.count - 1) {
var indexEntry = this.sessionHistory.getEntryAtIndex(this.sessionHistory.index, false);
this.sessionHistory.QueryInterface(Components.interfaces.nsISHistoryInternal);
indexEntry.QueryInterface(Components.interfaces.nsISHEntry);
this.sessionHistory.addEntry(indexEntry, true);
}
var purge = this.sessionHistory.count;
if (this.currentURI != "about:blank")
--purge; // Don't remove the page the user's staring at from shistory
if (purge > 0)
this.sessionHistory.PurgeHistory(purge);
]]>
</body>
</method>
<field name="_AUTOSCROLL_SNAP">10</field>
<field name="_scrollable">null</field>
<field name="_startX">null</field>
<field name="_startY">null</field>
<field name="_screenX">null</field>
<field name="_screenY">null</field>
<field name="_lastFrame">null</field>
<field name="_autoScrollPopup">null</field>
<field name="_autoScrollNeedsCleanup">false</field>
<method name="stopScroll">
<body>
<![CDATA[
if (this._scrollable) {
this._scrollable = null;
window.removeEventListener("mousemove", this, true);
window.removeEventListener("mousedown", this, true);
window.removeEventListener("mouseup", this, true);
window.removeEventListener("contextmenu", this, true);
window.removeEventListener("keydown", this, true);
window.removeEventListener("keypress", this, true);
window.removeEventListener("keyup", this, true);
}
]]>
</body>
</method>
<method name="_createAutoScrollPopup">
<body>
<![CDATA[
const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
var popup = document.createElementNS(XUL_NS, "panel");
popup.className = "autoscroller";
return popup;
]]>
</body>
</method>
<method name="startScroll">
<parameter name="event"/>
<body>
<![CDATA[
if (!this._autoScrollPopup) {
if (this.hasAttribute("autoscrollpopup")) {
// our creator provided a popup to share
this._autoScrollPopup = document.getElementById(this.getAttribute("autoscrollpopup"));
}
else {
// we weren't provided a popup; we have to use the global scope
this._autoScrollPopup = this._createAutoScrollPopup();
document.documentElement.appendChild(this._autoScrollPopup);
this._autoScrollNeedsCleanup = true;
}
}
this._autoScrollPopup.addEventListener("popuphidden", this, true);
// we need these attributes so themers don't need to create per-platform packages
if (screen.colorDepth > 8) { // need high color for transparency
// Exclude second-rate platforms
this._autoScrollPopup.setAttribute("transparent", !/BeOS|OS\/2/.test(navigator.appVersion));
// Enable translucency on Windows and Mac
this._autoScrollPopup.setAttribute("translucent", /Win|Mac/.test(navigator.platform));
}
// this is a list of overflow property values that allow scrolling
const scrollingAllowed = ['scroll', 'auto'];
// go upward in the DOM and find any parent element that has a overflow
// area and can therefore be scrolled
for (this._scrollable = event.originalTarget; this._scrollable;
this._scrollable = this._scrollable.parentNode) {
// do not use overflow based autoscroll for <html> and <body>
// Elements or non-html elements such as svg or Document nodes
// also make sure to skip select elements that are not multiline
if (!(this._scrollable instanceof HTMLElement) ||
(this._scrollable instanceof HTMLHtmlElement) ||
(this._scrollable instanceof HTMLBodyElement) ||
((this._scrollable instanceof HTMLSelectElement) && !this._scrollable.multiple)) {
continue;
}
var overflowx = this._scrollable.ownerDocument.defaultView
.getComputedStyle(this._scrollable, '')
.getPropertyValue('overflow-x');
var overflowy = this._scrollable.ownerDocument.defaultView
.getComputedStyle(this._scrollable, '')
.getPropertyValue('overflow-y');
// we already discarded non-multiline selects so allow vertical
// scroll for multiline ones directly without checking for a
// overflow property
var scrollVert = this._scrollable.clientHeight > 0 &&
this._scrollable.scrollHeight > this._scrollable.clientHeight &&
(this._scrollable instanceof HTMLSelectElement ||
scrollingAllowed.indexOf(overflowy) >= 0);
// do not allow horizontal scrolling for select elements, it leads
// to visual artifacts and is not the expected behavior anyway
if (!(this._scrollable instanceof HTMLSelectElement) &&
this._scrollable.clientWidth > 0 &&
this._scrollable.scrollWidth > this._scrollable.clientWidth &&
scrollingAllowed.indexOf(overflowx) >= 0) {
this._autoScrollPopup.setAttribute("scrolldir", scrollVert ? "NSEW" : "EW");
break;
}
else if (scrollVert) {
this._autoScrollPopup.setAttribute("scrolldir", "NS");
break;
}
}
if (!this._scrollable) {
this._scrollable = event.originalTarget.ownerDocument.defaultView;
if (this._scrollable.scrollMaxX > 0) {
this._autoScrollPopup.setAttribute("scrolldir", this._scrollable.scrollMaxY > 0 ? "NSEW" : "EW");
}
else if (this._scrollable.scrollMaxY > 0) {
this._autoScrollPopup.setAttribute("scrolldir", "NS");
}
else {
this._scrollable = null; // abort scrolling
return;
}
}
this._autoScrollPopup.showPopup(document.documentElement,
event.screenX,
event.screenY,
"popup", null, null);
this._ignoreMouseEvents = true;
this._startX = event.screenX;
this._startY = event.screenY;
this._screenX = event.screenX;
this._screenY = event.screenY;
this._scrollErrorX = 0;
this._scrollErrorY = 0;
this._lastFrame = window.mozAnimationStartTime;
window.addEventListener("mousemove", this, true);
window.addEventListener("mousedown", this, true);
window.addEventListener("mouseup", this, true);
window.addEventListener("contextmenu", this, true);
window.addEventListener("keydown", this, true);
window.addEventListener("keypress", this, true);
window.addEventListener("keyup", this, true);
window.mozRequestAnimationFrame(this);
]]>
</body>
</method>
<method name="_roundToZero">
<parameter name="num"/>
<body>
<![CDATA[
if (num > 0)
return Math.floor(num);
return Math.ceil(num);
]]>
</body>
</method>
<method name="_accelerate">
<parameter name="curr"/>
<parameter name="start"/>
<body>
<![CDATA[
const speed = 12;
var val = (curr - start) / speed;
if (val > 1)
return val * Math.sqrt(val) - 1;
if (val < -1)
return val * Math.sqrt(-val) + 1;
return 0;
]]>
</body>
</method>
<method name="autoScrollLoop">
<parameter name="timestamp"/>
<body>
<![CDATA[
if (!this._scrollable) {
// Scrolling has been canceled
return;
}
// avoid long jumps when the browser hangs for more than
// |maxTimeDelta| ms
const maxTimeDelta = 100;
var timeDelta = Math.min(maxTimeDelta, timestamp - this._lastFrame);
// we used to scroll |_accelerate()| pixels every 20ms (50fps)
var timeCompensation = timeDelta / 20;
this._lastFrame = timestamp;
var actualScrollX = 0;
var actualScrollY = 0;
// don't bother scrolling vertically when the scrolldir is only horizontal
// and the other way around
var scrolldir = this._autoScrollPopup.getAttribute("scrolldir");
if (scrolldir != 'EW') {
var y = this._accelerate(this._screenY, this._startY) * timeCompensation;
var desiredScrollY = this._scrollErrorY + y;
actualScrollY = this._roundToZero(desiredScrollY);
this._scrollErrorY = (desiredScrollY - actualScrollY);
}
if (scrolldir != 'NS') {
var x = this._accelerate(this._screenX, this._startX) * timeCompensation;
var desiredScrollX = this._scrollErrorX + x;
actualScrollX = this._roundToZero(desiredScrollX);
this._scrollErrorX = (desiredScrollX - actualScrollX);
}
if (this._scrollable instanceof Window)
this._scrollable.scrollBy(actualScrollX, actualScrollY);
else { // an element with overflow
this._scrollable.scrollLeft += actualScrollX;
this._scrollable.scrollTop += actualScrollY;
}
window.mozRequestAnimationFrame(this);
]]>
</body>
</method>
<method name="isAutoscrollBlocker">
<parameter name="node"/>
<body>
<![CDATA[
var mmPaste = false;
var mmScrollbarPosition = false;
try {
mmPaste = this.mPrefs.getBoolPref("middlemouse.paste");
}
catch (ex) {
}
try {
mmScrollbarPosition = this.mPrefs.getBoolPref("middlemouse.scrollbarPosition");
}
catch (ex) {
}
while (node) {
if ((node instanceof HTMLAnchorElement || node instanceof HTMLAreaElement) && node.hasAttribute("href"))
return true;
if (mmPaste && (node instanceof HTMLInputElement || node instanceof HTMLTextAreaElement))
return true;
if (node instanceof XULElement && mmScrollbarPosition
&& (node.localName == "scrollbar" || node.localName == "scrollcorner"))
return true;
node = node.parentNode;
}
return false;
]]>
</body>
</method>
<!-- nsIFrameRequestCallback implementation -->
<method name="sample">
<parameter name="timeStamp"/>
<body>
<![CDATA[
this.autoScrollLoop(timeStamp);
]]>
</body>
</method>
<method name="handleEvent">
<parameter name="aEvent"/>
<body>
<![CDATA[
if (this._scrollable) {
switch(aEvent.type) {
case "mousemove": {
this._screenX = aEvent.screenX;
this._screenY = aEvent.screenY;
var x = this._screenX - this._startX;
var y = this._screenY - this._startY;
if ((x > this._AUTOSCROLL_SNAP || x < -this._AUTOSCROLL_SNAP) ||
(y > this._AUTOSCROLL_SNAP || y < -this._AUTOSCROLL_SNAP))
this._ignoreMouseEvents = false;
break;
}
case "mouseup":
case "mousedown":
case "contextmenu": {
if (!this._ignoreMouseEvents)
this._autoScrollPopup.hidePopup();
this._ignoreMouseEvents = false;
break;
}
case "popuphidden": {
this._autoScrollPopup.removeEventListener("popuphidden", this, true);
this.stopScroll();
break;
}
case "keydown": {
if (aEvent.keyCode == aEvent.DOM_VK_ESCAPE) {
// the escape key will be processed by
// nsXULPopupManager::KeyDown and the panel will be closed.
// So, don't consume the key event here.
break;
}
// don't break here. we need to eat keydown events.
}
case "keypress":
case "keyup": {
// All keyevents should be eaten here during autoscrolling.
aEvent.stopPropagation();
aEvent.preventDefault();
break;
}
}
}
]]>
</body>
</method>
<method name="swapDocShells">
<parameter name="aOtherBrowser"/>
<body>
<![CDATA[
// We need to swap fields that are tied to our docshell or related to
// the loaded page
// Fields which are built as a result of notifactions (pageshow/hide,
// DOMLinkAdded/Removed, onStateChange) should not be swapped here,
// because these notifications are dispatched again once the docshells
// are swapped.
var fieldsToSwap = [ "_docShell", "_webBrowserFind", "_contentWindow", "_webNavigation"];
var ourFieldValues = {};
var otherFieldValues = {};
for each (var field in fieldsToSwap) {
ourFieldValues[field] = this[field];
otherFieldValues[field] = aOtherBrowser[field];
}
this.QueryInterface(Components.interfaces.nsIFrameLoaderOwner)
.swapFrameLoaders(aOtherBrowser);
// Before we swap the actual docShell property we need to detach the
// form fill controller from those docShells.
this.detachFormFill();
aOtherBrowser.detachFormFill();
for each (var field in fieldsToSwap) {
this[field] = otherFieldValues[field];
aOtherBrowser[field] = ourFieldValues[field];
}
// Re-attach the docShells to the form fill controller.
this.attachFormFill();
aOtherBrowser.attachFormFill();
// Null the current nsITypeAheadFind instances so that they're
// lazily re-created on access. We need to do this because they
// might have attached the wrong docShell.
this._fastFind = aOtherBrowser._fastFind = null;
]]>
</body>
</method>
</implementation>
<handlers>
<handler event="keypress" keycode="VK_F7" group="system">
<![CDATA[
if (event.defaultPrevented || !event.isTrusted)
return;
var isEnabled = this.mPrefs.getBoolPref("accessibility.browsewithcaret_shortcut.enabled");
if (!isEnabled)
return;
// Toggle browse with caret mode
var browseWithCaretOn = false;
var warn = true;
try {
warn = this.mPrefs.getBoolPref("accessibility.warn_on_browsewithcaret");
} catch (ex) {
}
try {
browseWithCaretOn = this.mPrefs.getBoolPref("accessibility.browsewithcaret");
} catch (ex) {
}
if (warn && !browseWithCaretOn) {
var checkValue = {value:false};
var promptService = Components.classes["@mozilla.org/embedcomp/prompt-service;1"]
.getService(Components.interfaces.nsIPromptService);
var buttonPressed = promptService.confirmEx(window,
this.mStrBundle.GetStringFromName('browsewithcaret.checkWindowTitle'),
this.mStrBundle.GetStringFromName('browsewithcaret.checkLabel'),
promptService.STD_YES_NO_BUTTONS,
null, null, null, this.mStrBundle.GetStringFromName('browsewithcaret.checkMsg'),
checkValue);
if (buttonPressed != 0)
return;
if (checkValue.value) {
try {
this.mPrefs.setBoolPref("accessibility.warn_on_browsewithcaret", false);
}
catch (ex) {
}
}
}
// Toggle the pref
try {
this.mPrefs.setBoolPref("accessibility.browsewithcaret",!browseWithCaretOn);
} catch (ex) {
}
]]>
</handler>
<handler event="mousedown" phase="capturing">
<![CDATA[
if (!this._scrollable && event.button == 1) {
if (!this.autoscrollEnabled ||
this.isAutoscrollBlocker(event.originalTarget))
return;
this.startScroll(event);
}
]]>
</handler>
<handler event="dragover" group="system">
<![CDATA[
if (!this.droppedLinkHandler || event.defaultPrevented)
return;
// For drags that appear to be internal text (for example, tab drags),
// set the dropEffect to 'none'. This prevents the drop even if some
// other listener cancelled the event.
var types = event.dataTransfer.types;
if (types.contains("text/x-moz-text-internal") && !types.contains("text/plain")) {
event.dataTransfer.dropEffect = "none";
event.stopPropagation();
event.preventDefault();
}
let linkHandler = Components.classes["@mozilla.org/content/dropped-link-handler;1"].
getService(Components.interfaces.nsIDroppedLinkHandler);
if (linkHandler.canDropLink(event, false))
event.preventDefault();
]]>
</handler>
<handler event="drop" group="system">
<![CDATA[
if (!this.droppedLinkHandler || event.defaultPrevented)
return;
let name = { };
let linkHandler = Components.classes["@mozilla.org/content/dropped-link-handler;1"].
getService(Components.interfaces.nsIDroppedLinkHandler);
try {
// Pass true to prevent the dropping of javascript:/data: URIs
var uri = linkHandler.dropLink(event, name, true);
} catch (ex) {
return;
}
if (uri) {
this.droppedLinkHandler(event, uri, name.value);
}
]]>
</handler>
</handlers>
</binding>
</bindings>
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