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: "use strict";
michael@0: 
michael@0: this.EXPORTED_SYMBOLS = [
michael@0:   "SelectParentHelper"
michael@0: ];
michael@0: 
michael@0: let currentBrowser = null;
michael@0: 
michael@0: this.SelectParentHelper = {
michael@0:   populate: function(popup, items, selectedIndex) {
michael@0:     // Clear the current contents of the popup
michael@0:     popup.textContent = "";
michael@0:     populateChildren(popup, items, selectedIndex);
michael@0:   },
michael@0: 
michael@0:   open: function(browser, popup, rect) {
michael@0:     currentBrowser = browser;
michael@0:     this._registerListeners(popup);
michael@0:     popup.hidden = false;
michael@0: 
michael@0:     let {x, y} = browser.mapScreenCoordinatesFromContent(rect.left, rect.top + rect.height);
michael@0:     popup.openPopupAtScreen(x, y);
michael@0:   },
michael@0: 
michael@0:   hide: function(popup) {
michael@0:     popup.hidePopup();
michael@0:   },
michael@0: 
michael@0:   handleEvent: function(event) {
michael@0:     let popup = event.currentTarget;
michael@0: 
michael@0:     switch (event.type) {
michael@0:       case "command":
michael@0:         if (event.target.hasAttribute("value")) {
michael@0:           currentBrowser.messageManager.sendAsyncMessage("Forms:SelectDropDownItem", {
michael@0:             value: event.target.value
michael@0:           });
michael@0:         }
michael@0:         popup.hidePopup();
michael@0:         break;
michael@0: 
michael@0:       case "popuphidden":
michael@0:         currentBrowser.messageManager.sendAsyncMessage("Forms:DismissedDropDown", {});
michael@0:         currentBrowser = null;
michael@0:         this._unregisterListeners(popup);
michael@0:         break;
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   _registerListeners: function(popup) {
michael@0:     popup.addEventListener("command", this);
michael@0:     popup.addEventListener("popuphidden", this);
michael@0:   },
michael@0: 
michael@0:   _unregisterListeners: function(popup) {
michael@0:     popup.removeEventListener("command", this);
michael@0:     popup.removeEventListener("popuphidden", this);
michael@0:   },
michael@0: 
michael@0: };
michael@0: 
michael@0: function populateChildren(element, options, selectedIndex, startIndex = 0, isGroup = false) {
michael@0:   let index = startIndex;
michael@0: 
michael@0:   for (let option of options) {
michael@0:     let item = element.ownerDocument.createElement("menuitem");
michael@0:     item.setAttribute("label", option.textContent);
michael@0:     item.setAttribute("type", "radio");
michael@0: 
michael@0:     if (index == selectedIndex) {
michael@0:       item.setAttribute("checked", "true");
michael@0:     }
michael@0: 
michael@0:     element.appendChild(item);
michael@0: 
michael@0:     if (option.children.length > 0) {
michael@0:       item.classList.add("contentSelectDropdown-optgroup");
michael@0:       item.setAttribute("disabled", "true");
michael@0:       index = populateChildren(element, option.children, selectedIndex, index, true);
michael@0:     } else {
michael@0:       item.setAttribute("value", index++);
michael@0: 
michael@0:       if (isGroup) {
michael@0:         item.classList.add("contentSelectDropdown-ingroup")
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return index;
michael@0: }