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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* Chrome side handling of form validation popup.
*/
"use strict";
var Cc = Components.classes;
var Ci = Components.interfaces;
var Cu = Components.utils;
this.EXPORTED_SYMBOLS = [ "FormValidationHandler" ];
Cu.import("resource://gre/modules/Services.jsm");
var FormValidationHandler =
{
_panel: null,
_anchor: null,
/*
* Public apis
*/
init() {
let mm = Cc["@mozilla.org/globalmessagemanager;1"].getService(Ci.nsIMessageListenerManager);
mm.addMessageListener("FormValidation:ShowPopup", this);
mm.addMessageListener("FormValidation:HidePopup", this);
},
uninit() {
let mm = Cc["@mozilla.org/globalmessagemanager;1"].getService(Ci.nsIMessageListenerManager);
mm.removeMessageListener("FormValidation:ShowPopup", this);
mm.removeMessageListener("FormValidation:HidePopup", this);
this._panel = null;
this._anchor = null;
},
hidePopup() {
this._hidePopup();
},
/*
* Events
*/
receiveMessage(aMessage) {
let window = aMessage.target.ownerGlobal;
let json = aMessage.json;
let tabBrowser = window.gBrowser;
switch (aMessage.name) {
case "FormValidation:ShowPopup":
// target is the <browser>, make sure we're receiving a message
// from the foreground tab.
if (tabBrowser && aMessage.target != tabBrowser.selectedBrowser) {
return;
}
this._showPopup(window, json);
break;
case "FormValidation:HidePopup":
this._hidePopup();
break;
}
},
observe(aSubject, aTopic, aData) {
this._hidePopup();
},
handleEvent(aEvent) {
switch (aEvent.type) {
case "FullZoomChange":
case "TextZoomChange":
case "ZoomChangeUsingMouseWheel":
case "scroll":
this._hidePopup();
break;
case "popuphiding":
this._onPopupHiding(aEvent);
break;
}
},
/*
* Internal
*/
_onPopupHiding(aEvent) {
aEvent.originalTarget.removeEventListener("popuphiding", this, true);
let tabBrowser = aEvent.originalTarget.ownerDocument.getElementById("content");
tabBrowser.selectedBrowser.removeEventListener("scroll", this, true);
tabBrowser.selectedBrowser.removeEventListener("FullZoomChange", this);
tabBrowser.selectedBrowser.removeEventListener("TextZoomChange", this);
tabBrowser.selectedBrowser.removeEventListener("ZoomChangeUsingMouseWheel", this);
this._panel.hidden = true;
this._panel = null;
this._anchor.hidden = true;
this._anchor = null;
},
/*
* Shows the form validation popup at a specified position or updates the
* messaging and position if the popup is already displayed.
*
* @aWindow - the chrome window
* @aPanelData - Object that contains popup information
* aPanelData stucture detail:
* contentRect - the bounding client rect of the target element. If
* content is remote, this is relative to the browser, otherwise its
* relative to the window.
* position - popup positional string constants.
* message - the form element validation message text.
*/
_showPopup(aWindow, aPanelData) {
let previouslyShown = !!this._panel;
this._panel = aWindow.document.getElementById("invalid-form-popup");
this._panel.firstChild.textContent = aPanelData.message;
this._panel.hidden = false;
let tabBrowser = aWindow.gBrowser;
this._anchor = tabBrowser.popupAnchor;
this._anchor.left = aPanelData.contentRect.left;
this._anchor.top = aPanelData.contentRect.top;
this._anchor.width = aPanelData.contentRect.width;
this._anchor.height = aPanelData.contentRect.height;
this._anchor.hidden = false;
// Display the panel if it isn't already visible.
if (!previouslyShown) {
// Cleanup after the popup is hidden
this._panel.addEventListener("popuphiding", this, true);
// Hide if the user scrolls the page
tabBrowser.selectedBrowser.addEventListener("scroll", this, true);
tabBrowser.selectedBrowser.addEventListener("FullZoomChange", this);
tabBrowser.selectedBrowser.addEventListener("TextZoomChange", this);
tabBrowser.selectedBrowser.addEventListener("ZoomChangeUsingMouseWheel", this);
// Open the popup
this._panel.openPopup(this._anchor, aPanelData.position, 0, 0, false);
}
},
/*
* Hide the popup if currently displayed. Will fire an event to onPopupHiding
* above if visible.
*/
_hidePopup() {
if (this._panel) {
this._panel.hidePopup();
}
}
};
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