Bug 788431 - Ctrl-C in the Rule View and the Property view doesn't work. r=paul

browser/devtools/styleinspector/CssHtmlTree.jsm

@@ -133,6 +133,7 @@ this.CssHtmlTree = function CssHtmlTree(aStyleInspector)
   this.getRTLAttr = chromeReg.isLocaleRTL("global") ? "rtl" : "ltr";
 
   // Create bound methods.
+  this.siFocusWindow = this.focusWindow.bind(this);
   this.siBoundMenuUpdate = this.computedViewMenuUpdate.bind(this);
   this.siBoundCopy = this.computedViewCopy.bind(this);
   this.siBoundCopyDeclaration = this.computedViewCopyDeclaration.bind(this);
@@ -140,6 +141,7 @@ this.CssHtmlTree = function CssHtmlTree(aStyleInspector)
   this.siBoundCopyPropertyValue = this.computedViewCopyPropertyValue.bind(this);
 
   this.styleDocument.addEventListener("copy", this.siBoundCopy);
+  this.styleDocument.addEventListener("mousedown", this.siFocusWindow);
 
   // Nodes used in templating
   this.root = this.styleDocument.getElementById("root");
@@ -557,6 +559,17 @@ CssHtmlTree.prototype = {
     menuitem.disabled = disablePropertyItems;
   },
 
+  /**
+   * Focus the window on mousedown.
+   *
+   * @param aEvent The event object
+   */
+  focusWindow: function si_focusWindow(aEvent)
+  {
+    let win = this.styleDocument.defaultView;
+    win.focus();
+  },
+
   /**
    * Copy selected text.
    *
@@ -704,6 +717,7 @@ CssHtmlTree.prototype = {
 
     // Remove bound listeners
     this.styleDocument.removeEventListener("copy", this.siBoundCopy);
+    this.styleDocument.removeEventListener("mousedown", this.siFocusWindow);
 
     // Nodes used in templating
     delete this.root;

browser/devtools/styleinspector/CssRuleView.jsm

@@ -1402,6 +1402,8 @@ RuleEditor.prototype = {
     }.bind(this), false);
 
     this.element.addEventListener("mousedown", function() {
+      this.doc.defaultView.focus();
+
       let editorNodes =
         this.doc.querySelectorAll(".styleinspector-propertyeditor");