/
inspector.js
1857 lines (1547 loc) · 62.4 KB
/
inspector.js
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/* See license.txt for terms of usage */
define([
"firebug/lib/object",
"firebug/firebug",
"firebug/chrome/firefox",
"firebug/chrome/reps",
"firebug/lib/locale",
"firebug/lib/events",
"firebug/lib/wrapper",
"firebug/lib/css",
"firebug/lib/dom",
"firebug/lib/xml",
"firebug/chrome/window",
"firebug/lib/system",
],
function(Obj, Firebug, Firefox, FirebugReps, Locale, Events, Wrapper, Css, Dom, Xml,
Win, System) {
// ********************************************************************************************* //
// Constants
const inspectDelay = 200;
const highlightCSS = "chrome://firebug/content/html/highlighter.css";
const ident = {
frame: 0,
boxModel: 1,
imageMap: 2,
proxyElt: 3
};
// ********************************************************************************************* //
// Globals
var boxModelHighlighter = null;
var frameHighlighter = null;
// ********************************************************************************************* //
/**
* @module Implements Firebug Inspector logic.
*/
Firebug.Inspector = Obj.extend(Firebug.Module,
{
dispatchName: "inspector",
inspecting: false,
inspectingPanel: null,
/**
* Main highlighter method. Can be used to highlight elements using the box model,
* frame or image map highlighters. Can highlight single or multiple elements.
*
* Examples:
* Firebug.Inspector.highlightObject([window.content.document.getElementById('gbar'),
* window.content.document.getElementById('logo')],
* window.content, "frame", null,
* ["#ff0000",{background:"#0000ff", border:"#ff0000"}])
* or
* Firebug.Inspector.highlightObject([window.content.document.getElementById('gbar'),
* window.content.document.getElementById('logo')], window.content, "boxModel", null,
* [{content: "#ff0000", padding: "#eeeeee", border: "#00ff00", margin: "#0000ff"},
* {content: "#00ff00", padding: "#eeeeee", border: "#00ff00", margin: "#0000ff"}])
*
* @param {Array} elementArr Elements to highlight
* @param {Window} context Context of the elements to be highlighted
* @param {String} [highlightType] Either "frame" or "boxModel". Default is configurable.
* @param {String} [boxFrame] Displays the line guides for the box model layout view.
* Valid values are: "content", "padding", "border" or "margin"
* @param {String | Array} [colorObj] Any valid html color e.g. red, #f00, #ff0000, etc.,
* a valid color object or any valid highlighter color array.
*/
highlightObject: function(elementArr, context, highlightType, boxFrame, colorObj)
{
var i, elt, elementLen, oldContext, usingColorArray;
var highlighter = highlightType ? getHighlighter(highlightType) : this.defaultHighlighter;
if (!elementArr || !FirebugReps.Arr.isArray(elementArr, context.window))
{
// highlight a single element
if (!elementArr || !Dom.isElement(elementArr) ||
(Wrapper.getContentView(elementArr) &&
!Xml.isVisible(Wrapper.getContentView(elementArr))))
{
if (elementArr && elementArr.nodeType == 3)
elementArr = elementArr.parentNode;
else
elementArr = null;
}
if (elementArr && context && context.highlightTimeout)
{
context.clearTimeout(context.highlightTimeout);
delete context.highlightTimeout;
}
oldContext = this.highlightedContext;
if (oldContext && oldContext.window)
this.clearAllHighlights();
// Stop multi element highlighting
if (!elementArr)
this.repaint.element = null;
this.highlighter = highlighter;
this.highlightedContext = context;
if (elementArr)
{
if (!isVisibleElement(elementArr))
highlighter.unhighlight(context);
else if (context && context.window && context.window.document)
highlighter.highlight(context, elementArr, boxFrame, colorObj, false);
}
else if (oldContext)
{
oldContext.highlightTimeout = oldContext.setTimeout(function()
{
if (FBTrace.DBG_INSPECT)
FBTrace.sysout("Removing inspector highlighter due to setTimeout loop");
if (!oldContext.highlightTimeout)
return;
delete oldContext.highlightTimeout;
if (oldContext.window && oldContext.window.document)
{
highlighter.unhighlight(oldContext);
if (oldContext.inspectorMouseMove)
Events.removeEventListener(oldContext.window.document, "mousemove",
oldContext.inspectorMouseMove, true);
}
}, inspectDelay);
}
}
else
{
// Highlight multiple elements
if (context && context.highlightTimeout)
{
context.clearTimeout(context.highlightTimeout);
delete context.highlightTimeout;
}
this.clearAllHighlights();
usingColorArray = FirebugReps.Arr.isArray(colorObj, context.window);
if (context && context.window && context.window.document)
{
for (i=0, elementLen=elementArr.length; i<elementLen; i++)
{
elt = elementArr[i];
if (elt && elt instanceof HTMLElement)
{
if (elt.nodeType === 3)
elt = elt.parentNode;
if (usingColorArray)
highlighter.highlight(context, elt, null, colorObj[i], true);
else
highlighter.highlight(context, elt, null, colorObj, true);
}
}
}
storeHighlighterParams(null, context, elementArr, null, colorObj, highlightType, true);
}
},
/**
* Clear all highlighted areas on a page.
*/
clearAllHighlights: function()
{
highlighterCache.clear();
},
/**
* Toggle inspecting on / off
* @param {Window} [context] The window to begin inspecting in, necessary to toggle inspecting on.
*/
toggleInspecting: function(context)
{
if (this.inspecting)
this.stopInspecting(true);
else
this.startInspecting(context);
},
/**
* Check if the new panel has the inspectable property set. If so set it as the new inspectingPanel.
*/
onPanelChanged: function()
{
if (this.inspecting)
{
var panelBar1 = Firebug.chrome.$("fbPanelBar1");
var panel = panelBar1.selectedPanel;
if (panel && panel.inspectable)
{
this.inspectNode(null);
this.inspectingPanel = panel;
}
}
},
/**
* Turn inspecting on.
* @param {Window} context The main browser window
*/
startInspecting: function(context)
{
if (this.inspecting || !context || !context.loaded)
return;
this.clearAllHighlights();
this.inspecting = true;
this.inspectingContext = context;
Firebug.chrome.setGlobalAttribute("cmd_toggleInspecting", "checked", "true");
this.attachInspectListeners(context);
var inspectingPanelName = this._resolveInspectingPanelName(context);
this.inspectingPanel = Firebug.chrome.switchToPanel(context, inspectingPanelName);
if (Firebug.isDetached())
context.window.focus();
else if (Firebug.isMinimized())
Firebug.showBar(true);
this.inspectingPanel.panelNode.focus();
this.inspectingPanel.startInspecting();
Events.dispatch(this.fbListeners, "onStartInspecting", [context]);
if (context.stopped)
Firebug.Debugger.thaw(context);
var hoverNodes = context.window.document.querySelectorAll(':hover');
if (hoverNodes.length)
this.inspectNode(hoverNodes[hoverNodes.length-1]);
},
/**
* Highlight a node using the frame highlighter. Can only be used after inspecting has already started.
* @param {Element} node The element to inspect
*/
inspectNode: function(node)
{
if (node && node.nodeType != 1)
node = node.parentNode;
if (node && Firebug.shouldIgnore(node) && !node.fbProxyFor)
return;
var context = this.inspectingContext;
if (this.inspectTimeout)
{
context.clearTimeout(this.inspectTimeout);
delete this.inspectTimeout;
}
if (node && node.fbProxyFor)
node = node.fbProxyFor;
var inspectingPanel = this.inspectingPanel;
// Some panels may want to only allow inspection of panel-supported objects
node = inspectingPanel ? inspectingPanel.getInspectNode(node) : node;
var highlightColor = inspectingPanel ? inspectingPanel.inspectHighlightColor : "";
this.highlightObject(node, context, "frame", undefined, highlightColor);
this.inspectingNode = node;
if (node)
{
var _this = this;
this.inspectTimeout = context.setTimeout(function()
{
var selection = inspectingPanel ? inspectingPanel.inspectNode(node) : null;
Events.dispatch(_this.fbListeners, "onInspectNode", [context, node]);
if (selection)
inspectingPanel.select(node);
}, inspectDelay);
}
},
/**
* Stop inspecting and clear all highlights.
* @param {Boolean} canceled Indicates whether inspect was canceled (usually via the escape key)
* @param {Boolean} [waitForClick] Indicates whether the next click will still forward you
* to the clicked element in the HTML panel.
*/
stopInspecting: function(canceled, waitForClick)
{
if (!this.inspecting)
return;
var context = this.inspectingContext;
if (context.stopped)
Firebug.Debugger.freeze(context);
if (this.inspectTimeout)
{
context.clearTimeout(this.inspectTimeout);
delete this.inspectTimeout;
}
this.detachInspectListeners(context);
if (!waitForClick)
this.detachClickInspectListeners(context.window);
Firebug.chrome.setGlobalAttribute("cmd_toggleInspecting", "checked", "false");
this.inspecting = false;
if (this.inspectingPanel)
{
Firebug.chrome.unswitchToPanel(context, this.inspectingPanel.name, canceled);
this.inspectingPanel.stopInspecting(this.inspectingNode, canceled);
}
else
{
FBTrace.sysout("inspector.stopInspecting; ERROR? inspectingPanel is NULL");
}
Events.dispatch(this.fbListeners, "onStopInspecting", [context, this.inspectingNode, canceled]);
this.inspectNode(null);
// Make sure there are no (indirect) references to the page document.
this.inspectingPanel = null;
this.inspectingContext = null;
if (Firebug.isDetached())
window.focus();
},
/**
* Get the name of the inspectable panel.
* @param {Window} context Context of the panel
*/
_resolveInspectingPanelName: function(context)
{
var name, requestingPanel = context && context.getPanel(context.panelName);
if (requestingPanel && requestingPanel.inspectable)
name = requestingPanel.name;
else
name = "html";
return name;
},
/**
* Inspect from context menu.
* @param {Element} elt The element to inspect
*/
inspectFromContextMenu: function(elt)
{
var panel;
var inspectingPanelName = "html";
Firebug.toggleBar(true, inspectingPanelName);
Firebug.chrome.select(elt, inspectingPanelName);
panel = Firebug.chrome.selectPanel(inspectingPanelName);
panel.panelNode.focus();
},
/**
* Navigate up and down through the DOM and highlight the result. This method is used by
* the key handlers for the up and down arrow keys.
*
* @param {String} dir Direction to navigate the Dom, either "up" or "down"
*/
inspectNodeBy: function(dir)
{
var target;
var node = this.inspectingNode;
if (dir == "up")
{
target = Firebug.chrome.getNextObject();
}
else if (dir == "down")
{
target = Firebug.chrome.getNextObject(true);
if (node && !target)
{
if (node.contentDocument)
target = node.contentDocument.documentElement;
else
target = Dom.getNextElement(node.firstChild);
}
}
if (target && Dom.isElement(target))
this.inspectNode(target);
else
System.beep();
},
/**
* Repaint the highlighter. Called from the window scroll and resize handlers.
*/
repaint: function()
{
var rp = this.repaint;
var highlighter = rp.highlighter;
var context = rp.context;
var element = rp.element;
var boxFrame = rp.boxFrame;
var colorObj = rp.colorObj;
var highlightType = rp.highlightType;
var isMulti = rp.isMulti;
if(!context || (!highlighter && !isMulti))
return;
if (isMulti && element)
{
this.highlightObject(element, context, highlightType, null, colorObj);
}
else if(!isMulti)
{
var highlighterNode = highlighterCache.get(highlighter.ident);
if(highlighterNode && highlighter.ident === ident.boxModel)
highlighterNode = highlighterNode.offset;
if(highlighterNode && highlighterNode.parentNode)
{
this.clearAllHighlights();
highlighter.highlight(context, element, boxFrame, colorObj, isMulti);
}
}
},
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
/**
* Attach the scroll and resize handlers to elt's window. Called from every highlight call.
* @param {Element} elt Passed in order to reliably obtain context
*/
attachRepaintInspectListeners: function(context, elt)
{
if (!elt || !elt.ownerDocument || !elt.ownerDocument.defaultView)
return;
var win = elt.ownerDocument.defaultView;
if (FBTrace.DBG_INSPECT)
FBTrace.sysout("inspector.attachRepaintInspectListeners to " + win.location.href, elt);
// there is no way to check if the listeners have already been added and we should
// avoid adding properties to the users page.
// Adding them again will do no harm so lets just do that.
// xxxHonza: I think that adding them twice could actually do harm,
// so make sure they are removed before.
context.removeEventListener(win.document, "resize", this.onInspectingResizeWindow, true);
context.removeEventListener(win.document, "scroll", this.onInspectingScroll, true);
// Register again.
context.addEventListener(win.document, "resize", this.onInspectingResizeWindow, true);
context.addEventListener(win.document, "scroll", this.onInspectingScroll, true);
},
/**
* Attach key and mouse events to windows recursively.
* @param {Window} context Context of the main browser window
*/
attachInspectListeners: function(context)
{
var win = context.window;
if (!win || !win.document)
return;
if (FBTrace.DBG_INSPECT)
FBTrace.sysout("inspector.attachInspectListeners to all subWindows of " + win.location);
var chrome = Firebug.chrome;
this.keyListeners =
[
chrome.keyCodeListen("RETURN", null, Obj.bindFixed(this.stopInspecting, this)),
chrome.keyCodeListen("ESCAPE", null, Obj.bindFixed(this.stopInspecting, this, true)),
chrome.keyCodeListen("UP", Events.isControl, Obj.bindFixed(this.inspectNodeBy, this, "up"), true),
chrome.keyCodeListen("DOWN", Events.isControl, Obj.bindFixed(this.inspectNodeBy, this, "down"), true),
];
Win.iterateWindows(win, Obj.bind(function(subWin)
{
if (FBTrace.DBG_INSPECT)
FBTrace.sysout("inspector.attacheInspectListeners to " + subWin.location +
" subWindow of " + win.location);
Events.addEventListener(subWin.document, "mouseover", this.onInspectingMouseOver, true);
Events.addEventListener(subWin.document, "mousedown", this.onInspectingMouseDown, true);
Events.addEventListener(subWin.document, "mouseup", this.onInspectingMouseUp, true);
Events.addEventListener(subWin.document, "click", this.onInspectingClick, true);
Events.addEventListener(subWin.document, "keypress", this.onInspectingKeyPress, true);
}, this));
},
/**
* Remove all event listeners except click listener from windows recursively.
* @param {Window} context Context of the main browser window
*/
detachInspectListeners: function(context)
{
var i, keyListenersLen;
var win = context.window;
if (!win || !win.document)
return;
var chrome = Firebug.chrome;
if (this.keyListeners) // XXXjjb for some reason this is null sometimes.
{
keyListenersLen = this.keyListeners.length;
for (i = 0; i < keyListenersLen; ++i)
chrome.keyIgnore(this.keyListeners[i]);
delete this.keyListeners;
}
Win.iterateWindows(win, Obj.bind(function(subWin)
{
Events.removeEventListener(subWin.document, "mouseover", this.onInspectingMouseOver, true);
Events.removeEventListener(subWin.document, "mousedown", this.onInspectingMouseDown, true);
Events.removeEventListener(subWin.document, "mouseup", this.onInspectingMouseUp, true);
Events.removeEventListener(subWin.document, "keypress", this.onInspectingKeyPress, true);
}, this));
},
/**
* Remove the click listener independently from detachInspectListeners because if we remove
* it after mousedown, we won't be able to cancel clicked links.
*
* @param {Window} context Context of the main browser window
*/
detachClickInspectListeners: function(context)
{
Win.iterateWindows(context, Obj.bind(function(subWin)
{
Events.removeEventListener(subWin.document, "click", this.onInspectingClick, true);
}, this));
},
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
/**
* Repaint last highlight in the correct position on window resize.
* @param {Event} event Passed for tracing
*/
onInspectingResizeWindow: function(event)
{
if (FBTrace.DBG_INSPECT)
FBTrace.sysout("onInspectingResizeWindow event", event);
this.repaint();
},
/**
* Repaint last highlight in the correct position on scroll.
* @param {Event} event Passed for tracing
*/
onInspectingScroll: function(event)
{
if (FBTrace.DBG_INSPECT)
FBTrace.sysout("onInspectingScroll event", event);
this.repaint();
},
/**
* Call inspectNode(event.target) highlighting the element that was moused over.
* @param {Event} event Passed for tracing and to identify the target of inspection
*/
onInspectingMouseOver: function(event)
{
if (FBTrace.DBG_INSPECT)
FBTrace.sysout("onInspectingMouseOver event", event);
this.inspectNode(event.target);
},
/**
* Trap mousedown events to prevent clicking a document from triggering a document's
* mousedown event when inspecting.
*
* @param {Event} event Used for tracing and canceling the event
*/
onInspectingMouseDown: function(event)
{
if (FBTrace.DBG_INSPECT)
FBTrace.sysout("onInspectingMouseDown event", {originalTarget: event.originalTarget,
tmpRealOriginalTarget:event.tmpRealOriginalTarget, event:event});
// Allow to scroll the document while inspecting
if (event.originalTarget && event.originalTarget.tagName === "xul:thumb")
return;
Events.cancelEvent(event);
},
/**
* Trap mouseup events to prevent clicking a document from triggering a document's mouseup
* event when inspecting.
*
* @param {Event} event Used for tracing and canceling the event
*/
onInspectingMouseUp: function(event)
{
if (FBTrace.DBG_INSPECT)
FBTrace.sysout("onInspectingMouseUp event", {originalTarget: event.originalTarget,
tmpRealOriginalTarget:event.tmpRealOriginalTarget,event:event});
// Allow to release scrollbar while inspecting
if (event.originalTarget && event.originalTarget.tagName === "xul:thumb")
return;
this.stopInspecting(false, true);
Events.cancelEvent(event);
},
/**
* Trap click events to prevent clicking a document from triggering a document's click event
* when inspecting and removes the click inspect listener.
*
* @param {Event} event Used for tracing and canceling the event
*/
onInspectingClick: function(event)
{
if (FBTrace.DBG_INSPECT)
FBTrace.sysout("onInspectingClick event", event);
var win = event.currentTarget.defaultView;
if (win)
{
win = Win.getRootWindow(win);
this.detachClickInspectListeners(win);
}
Events.cancelEvent(event);
},
/**
* Trap keypress events to allow manipulation of the hovered elements
*
* @param {Event} event Used for canceling the event
*/
onInspectingKeyPress: function(event)
{
if (event.keyCode == KeyEvent.DOM_VK_DELETE)
{
Events.dispatch(this.fbListeners, "onBeginFirebugChange", [this.inspectingNode, this]);
this.inspectingNode.parentNode.removeChild(this.inspectingNode);
Events.dispatch(this.fbListeners, "onEndFirebugChange", [this.inspectingNode, this]);
Events.cancelEvent(event);
}
},
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// extends Module
/**
* Initialize the inspector
*/
initialize: function()
{
Firebug.Module.initialize.apply(this, arguments);
this.onInspectingResizeWindow = Obj.bind(this.onInspectingResizeWindow, this);
this.onInspectingScroll = Obj.bind(this.onInspectingScroll, this);
this.onInspectingMouseOver = Obj.bind(this.onInspectingMouseOver, this);
this.onInspectingMouseDown = Obj.bind(this.onInspectingMouseDown, this);
this.onInspectingMouseUp = Obj.bind(this.onInspectingMouseUp, this);
this.onInspectingClick = Obj.bind(this.onInspectingClick, this);
this.onInspectingKeyPress = Obj.bind(this.onInspectingKeyPress, this);
this.onPanelChanged = Obj.bind(this.onPanelChanged, this);
this.updateOption("shadeBoxModel", Firebug.shadeBoxModel);
this.updateOption("showQuickInfoBox", Firebug.showQuickInfoBox);
var panelBar1 = Firebug.chrome.$("fbPanelBar1");
Events.addEventListener(panelBar1, "selectPanel", this.onPanelChanged, false);
if (FBTrace.DBG_INSPECT)
FBTrace.sysout("inspector.initialize;");
},
shutdown: function()
{
Firebug.Module.shutdown.apply(this, arguments);
var panelBar1 = Firebug.chrome.$("fbPanelBar1");
Events.removeEventListener(panelBar1, "selectPanel", this.onPanelChanged, false);
},
/**
* Stop inspecting and delete timers.
* @param {Window} context Context of the main window
*/
destroyContext: function(context)
{
if (context.highlightTimeout)
{
context.clearTimeout(context.highlightTimeout);
delete context.highlightTimeout;
}
if (this.inspecting)
this.stopInspecting(true);
},
/**
*/
unwatchWindow: function(context, win)
{
try
{
this.hideQuickInfoBox();
}
catch (ex)
{
// Get unfortunate errors here sometimes, so let's just ignore them since the
// window is going away anyhow
}
},
/**
* Called when a FF tab is created or activated (user changes FF tab). We stop inspecting
* in this situation.
*
* @param {xul:browser} [browser] Browser
* @param {Window} [context] The main browser window
*/
showContext: function(browser, context)
{
if (this.inspecting)
this.stopInspecting(true);
},
/**
* Called when a panel is shown.
* @param {xul:browser} [browser] Browser
* @param {Panel} [panel] Panel
*/
showPanel: function(browser, panel)
{
// Don't disable the cmd_toggleInspecting command. The related shortcut <key> must
// be available even if Firebug is not activated for the site. See 4452
// The panel can be null (if disabled) so use the global context.
// var context = Firebug.currentContext;
// var disabled = (context && context.loaded) ? false : true;
// Firebug.chrome.setGlobalAttribute("cmd_toggleInspecting", "disabled", disabled);
},
/**
* Called after a context's page gets DOMContentLoaded. We enable inspection here.
* @param {Window} [context] Context of the main window
*/
loadedContext: function(context)
{
// See the comment in showPanel.
// Firebug.chrome.setGlobalAttribute("cmd_toggleInspecting", "disabled", "false");
},
/**
* Update the shadeBoxModel or showQuickInfoBox options
* @param {String} name Either "shadeBoxModel" or "showQuickInfoBox"
* @param {Boolean} value Enable or Disable the option
*/
updateOption: function(name, value)
{
if (name == "shadeBoxModel")
{
this.highlightObject(null);
this.defaultHighlighter = value ? getHighlighter("boxModel") : getHighlighter("frame");
}
else if (name == "showQuickInfoBox")
{
if (quickInfoBox.boxEnabled && !value)
quickInfoBox.hide();
quickInfoBox.boxEnabled = value;
}
},
/**
* Gets stylesheet by Url.
* @param {Window} context the main browser window
* @param {String} url URL of the stylesheet
*/
getObjectByURL: function(context, url)
{
var styleSheet = Css.getStyleSheetByHref(url, context);
if (styleSheet)
return styleSheet;
},
/**
* Toggle the quick info box.
*/
toggleQuickInfoBox: function()
{
var qiBox = Firebug.chrome.$('fbQuickInfoPanel');
if (qiBox.state === "open")
quickInfoBox.hide();
quickInfoBox.boxEnabled = !quickInfoBox.boxEnabled;
Firebug.Options.set("showQuickInfoBox", quickInfoBox.boxEnabled);
},
/**
* Hide the quick info box.
*/
hideQuickInfoBox: function()
{
quickInfoBox.hide();
this.inspectNode(null);
}
});
// ********************************************************************************************* //
// Local Helpers
function getHighlighter(type)
{
if (type == "boxModel")
{
if (!boxModelHighlighter)
boxModelHighlighter = new BoxModelHighlighter();
return boxModelHighlighter;
}
else if (type == "frame")
{
if (!frameHighlighter)
frameHighlighter = new Firebug.Inspector.FrameHighlighter();
return frameHighlighter;
}
}
function pad(element, t, r, b, l) {
var css = 'padding:' + Math.abs(t) + "px " + Math.abs(r) + "px "
+ Math.abs(b) + "px " + Math.abs(l) + "px !important;";
if(element)
element.style.cssText = css;
else
return css;
}
function moveImp(element, x, y) {
var css = 'left:' + x + 'px !important;top:' + y + 'px !important;';
if(element)
element.style.cssText = css;
else
return css;
}
function resizeImp(element, w, h) {
var css = 'width:' + w + 'px !important;height:' + h + 'px !important;';
if(element)
element.style.cssText = css;
else
return css;
}
// ********************************************************************************************* //
// Imagemap Highlighter
function getImageMapHighlighter(context)
{
if (!context)
return;
var canvas, ctx, mx, my;
var doc = context.window.document;
var init = function(elt)
{
if (elt)
doc = elt.ownerDocument;
canvas = doc.getElementById('firebugCanvas');
if(!canvas)
{
canvas = doc.createElementNS("http://www.w3.org/1999/xhtml", "canvas");
hideElementFromInspection(canvas);
canvas.id = "firebugCanvas";
canvas.className = "firebugResetStyles firebugBlockBackgroundColor firebugCanvas";
canvas.width = context.window.innerWidth;
canvas.height = context.window.innerHeight;
Events.addEventListener(context.window, "scroll", function(){
context.imageMapHighlighter.show(false);
}, true);
Events.addEventListener(doc, "mousemove", function(event){
mx = event.clientX;
my = event.clientY;
}, true);
doc.body.appendChild(canvas);
}
};
if (!context.imageMapHighlighter)
{
context.imageMapHighlighter =
{
ident: ident.imageMap,
show: function(state)
{
if(!canvas)
init(null);
canvas.style.cssText = 'display:' + (state?'block':'none') + ' !important';
},
getImages: function(mapName, multi)
{
var i, rect, nsResolver, xpe, elt, elts,
images = [],
eltsLen = 0;
if(!mapName)
return;
xpe = new XPathEvaluator();
nsResolver = xpe.createNSResolver(doc.documentElement);
elts = xpe.evaluate("//map[@name='" + mapName + "']", doc,
nsResolver, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
if(elts.snapshotLength === 0)
return;
elts = xpe.evaluate("(//img | //input)[@usemap='#" + mapName + "']",
doc.documentElement, nsResolver, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
eltsLen = elts.snapshotLength;
for (i = 0; i < eltsLen; i++)
{
elt = elts.snapshotItem(i);
rect = Dom.getLTRBWH(elt);
if (multi)
{
images.push(elt);
}
else if(rect.left <= mx && rect.right >= mx && rect.top <= my && rect.bottom >= my)
{
images[0] = elt;
break;
}
}
return images;
},
highlight: function(eltArea, multi)
{
var i, j, v, vLen, images, imagesLen, rect, shape;
if (eltArea && eltArea.coords)
{
images = this.getImages(eltArea.parentNode.name, multi) || [];
init(eltArea);
v = eltArea.coords.split(",");
if(!ctx)
ctx = canvas.getContext("2d");
ctx.fillStyle = "rgba(135, 206, 235, 0.7)";
ctx.strokeStyle = "rgb(44, 167, 220)";
ctx.lineWidth = 2;