michael@0: // -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0: 
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: var FontBuilder = {
michael@0:   _enumerator: null,
michael@0:   get enumerator ()
michael@0:   {
michael@0:     if (!this._enumerator) {
michael@0:       this._enumerator = Components.classes["@mozilla.org/gfx/fontenumerator;1"]
michael@0:                                    .createInstance(Components.interfaces.nsIFontEnumerator);
michael@0:     }
michael@0:     return this._enumerator;
michael@0:   },
michael@0: 
michael@0:   _allFonts: null,
michael@0:   buildFontList: function (aLanguage, aFontType, aMenuList) 
michael@0:   {
michael@0:     // Reset the list
michael@0:     while (aMenuList.hasChildNodes())
michael@0:       aMenuList.removeChild(aMenuList.firstChild);
michael@0:     
michael@0:     var defaultFont = null;
michael@0:     // Load Font Lists
michael@0:     var fonts = this.enumerator.EnumerateFonts(aLanguage, aFontType, { } );
michael@0:     if (fonts.length > 0)
michael@0:       defaultFont = this.enumerator.getDefaultFont(aLanguage, aFontType);
michael@0:     else {
michael@0:       fonts = this.enumerator.EnumerateFonts(aLanguage, "", { });
michael@0:       if (fonts.length > 0)
michael@0:         defaultFont = this.enumerator.getDefaultFont(aLanguage, "");
michael@0:     }
michael@0:     
michael@0:     if (!this._allFonts)
michael@0:       this._allFonts = this.enumerator.EnumerateAllFonts({});
michael@0:     
michael@0:     // Build the UI for the Default Font and Fonts for this CSS type.
michael@0:     var popup = document.createElement("menupopup");
michael@0:     var separator;
michael@0:     if (fonts.length > 0) {
michael@0:       if (defaultFont) {
michael@0:         var bundlePreferences = document.getElementById("bundlePreferences");
michael@0:         var label = bundlePreferences.getFormattedString("labelDefaultFont", [defaultFont]);
michael@0:         var menuitem = document.createElement("menuitem");
michael@0:         menuitem.setAttribute("label", label);
michael@0:         menuitem.setAttribute("value", ""); // Default Font has a blank value
michael@0:         popup.appendChild(menuitem);
michael@0:         
michael@0:         separator = document.createElement("menuseparator");
michael@0:         popup.appendChild(separator);
michael@0:       }
michael@0:       
michael@0:       for (var i = 0; i < fonts.length; ++i) {
michael@0:         menuitem = document.createElement("menuitem");
michael@0:         menuitem.setAttribute("value", fonts[i]);
michael@0:         menuitem.setAttribute("label", fonts[i]);
michael@0:         popup.appendChild(menuitem);
michael@0:       }
michael@0:     }
michael@0:     
michael@0:     // Build the UI for the remaining fonts. 
michael@0:     if (this._allFonts.length > fonts.length) {
michael@0:       // Both lists are sorted, and the Fonts-By-Type list is a subset of the
michael@0:       // All-Fonts list, so walk both lists side-by-side, skipping values we've
michael@0:       // already created menu items for. 
michael@0:       var builtItem = separator ? separator.nextSibling : popup.firstChild;
michael@0:       var builtItemValue = builtItem ? builtItem.getAttribute("value") : null;
michael@0: 
michael@0:       separator = document.createElement("menuseparator");
michael@0:       popup.appendChild(separator);
michael@0:       
michael@0:       for (i = 0; i < this._allFonts.length; ++i) {
michael@0:         if (this._allFonts[i] != builtItemValue) {
michael@0:           menuitem = document.createElement("menuitem");
michael@0:           menuitem.setAttribute("value", this._allFonts[i]);
michael@0:           menuitem.setAttribute("label", this._allFonts[i]);
michael@0:           popup.appendChild(menuitem);
michael@0:         }
michael@0:         else {
michael@0:           builtItem = builtItem.nextSibling;
michael@0:           builtItemValue = builtItem ? builtItem.getAttribute("value") : null;
michael@0:         }
michael@0:       }
michael@0:     }
michael@0:     aMenuList.appendChild(popup);    
michael@0:   }
michael@0: };