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: const Cc = Components.classes;
michael@0: const Ci = Components.interfaces;
michael@0: const Cu = Components.utils;
michael@0: const Cr = Components.results;
michael@0: 
michael@0: Cu.import("resource://gre/modules/XPCOMUtils.jsm");
michael@0: Cu.import("resource://gre/modules/Services.jsm");
michael@0: 
michael@0: function MetroUIUtils() {
michael@0: }
michael@0: 
michael@0: const URLElements = {
michael@0:   "a": "href",
michael@0:   "applet": ["archive", "code", "codebase"],
michael@0:   "area": "href",
michael@0:   "audio": "src",
michael@0:   "base": "href",
michael@0:   "blockquote": ["cite"],
michael@0:   "body": "background",
michael@0:   "button": "formaction",
michael@0:   "command": "icon",
michael@0:   "del": ["cite"],
michael@0:   "embed": "src",
michael@0:   "form": "action",
michael@0:   "frame": ["longdesc", "src"],
michael@0:   "iframe": ["longdesc", "src"],
michael@0:   "img": ["longdesc", "src"],
michael@0:   "input": ["formaction", "src"],
michael@0:   "ins": ["cite"],
michael@0:   "link": "href",
michael@0:   "object": ["archive", "codebase", "data"],
michael@0:   "q": ["cite"],
michael@0:   "script": "src",
michael@0:   "source": "src",
michael@0: };
michael@0: 
michael@0: MetroUIUtils.prototype = {
michael@0:   classID : Components.ID("e4626085-17f7-4068-a225-66c1acc0485c"),
michael@0:   QueryInterface : XPCOMUtils.generateQI([Ci.nsIMetroUIUtils]),
michael@0:   /**
michael@0:    * Loads the specified panel in the browser.
michael@0:    * @ param aPanelId The identifier of the pane to load
michael@0:   */
michael@0:   showPanel: function(aPanelId) {
michael@0:     let browserWin = Services.wm.getMostRecentWindow("navigator:browser");
michael@0:     browserWin.PanelUI.show(aPanelId);
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Determines if the browser has selected content
michael@0:   */
michael@0:   get hasSelectedContent() {
michael@0:     try {
michael@0:       let browserWin = Services.wm.getMostRecentWindow("navigator:browser");
michael@0:       let tabBrowser = browserWin.getBrowser();
michael@0:       if (!browserWin || !tabBrowser || !tabBrowser.contentWindow) {
michael@0:         return false;
michael@0:       }
michael@0: 
michael@0:       let sel = tabBrowser.contentWindow.getSelection();
michael@0:       return sel && sel.toString();
michael@0:     } catch(e) {
michael@0:       return false;
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Obtains the current page title
michael@0:   */
michael@0:   get currentPageTitle() {
michael@0:     let browserWin = Services.wm.getMostRecentWindow("navigator:browser");
michael@0:     if (!browserWin || !browserWin.content || !browserWin.content.document) {
michael@0:       throw Cr.NS_ERROR_FAILURE;
michael@0:     }
michael@0:     return browserWin.content.document.title || "";
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Obtains the current page URI
michael@0:   */
michael@0:   get currentPageURI() {
michael@0:     let browserWin = Services.wm.getMostRecentWindow("navigator:browser");
michael@0:     if (!browserWin || !browserWin.content || !browserWin.content.document) {
michael@0:       throw Cr.NS_ERROR_FAILURE;
michael@0:     }
michael@0:     return browserWin.content.document.URL || "";
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Determines the text that should be shared
michael@0:   */
michael@0:   get shareText() {
michael@0:     let browserWin = Services.wm.getMostRecentWindow("navigator:browser");
michael@0:     let tabBrowser = browserWin.getBrowser();
michael@0:     if (browserWin && tabBrowser && tabBrowser.contentWindow) {
michael@0:       let sel = tabBrowser.contentWindow.getSelection();
michael@0:       if (sel && sel.rangeCount)
michael@0:         return sel;
michael@0:     }
michael@0: 
michael@0:     throw Cr.NS_ERROR_FAILURE;
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Replaces the node's attribute value to be a fully qualified URL
michael@0:   */
michael@0:   _expandAttribute : function(ioService, doc, node, attrName) {
michael@0:     let attrValue = node.getAttribute(attrName);
michael@0:     if (!attrValue)
michael@0:       return;
michael@0: 
michael@0:     try {
michael@0:       let uri = ioService.newURI(attrValue, null, doc.baseURIObject);
michael@0:       node.setAttribute(attrName, uri.spec);
michael@0:     } catch (e) {
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   /*
michael@0:    * Replaces all attribute values in 'n' which contain URLs recursiely
michael@0:    * to fully qualified URLs.
michael@0:   */
michael@0:   _expandURLs: function(doc, n) {
michael@0:     let ioService = Cc["@mozilla.org/network/io-service;1"].
michael@0:                     getService(Ci.nsIIOService);
michael@0:     for (let i = 0; i < n.children.length; i++) {
michael@0:       let child = n.children[i];
michael@0:       let childTagName = child.tagName.toLowerCase();
michael@0:       
michael@0:       // Iterate through all known tags which can contain URLs. A tag either
michael@0:       // contains a single attribute name or an array of attribute names.
michael@0:       for (let tagName in URLElements) {
michael@0:         if (tagName === childTagName) {
michael@0:           if (URLElements[tagName] instanceof Array) {
michael@0:             URLElements[tagName].forEach(function(attrName) {
michael@0:               this._expandAttribute(ioService ,doc, child, attrName);
michael@0:             }, this);
michael@0:           } else {
michael@0:             this._expandAttribute(ioService ,doc, child, URLElements[tagName]);
michael@0:           }
michael@0:         }
michael@0:       }
michael@0: 
michael@0:       this._expandURLs(doc, child);
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Determines the HTML that should be shared
michael@0:   */
michael@0:   get shareHTML() {
michael@0:     let browserWin = Services.wm.getMostRecentWindow("navigator:browser");
michael@0:     let tabBrowser = browserWin.getBrowser();
michael@0:     let sel;
michael@0:     if (browserWin && tabBrowser && tabBrowser.contentWindow &&
michael@0:         (sel = tabBrowser.contentWindow.getSelection()) && sel.rangeCount) {
michael@0:       let div = tabBrowser.contentWindow.document.createElement("DIV");
michael@0:       for (let i = 0; i < sel.rangeCount; i++) {
michael@0:         let contents = sel.getRangeAt(i).cloneContents(true);
michael@0:         div.appendChild(contents);
michael@0:       }
michael@0:       this._expandURLs(tabBrowser.contentWindow.document, div);
michael@0:       return div.outerHTML;
michael@0:     }
michael@0: 
michael@0:     throw Cr.NS_ERROR_FAILURE;
michael@0:   }
michael@0: };
michael@0: 
michael@0: var component = [MetroUIUtils];
michael@0: this.NSGetFactory = XPCOMUtils.generateNSGetFactory(component);