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: Components.utils.import("resource://gre/modules/Services.jsm");
michael@0: 
michael@0: const Ci = Components.interfaces;
michael@0: const Cc = Components.classes;
michael@0: 
michael@0: var windowMediator = Cc["@mozilla.org/appshell/window-mediator;1"]
michael@0:                        .getService(Ci.nsIWindowMediator);
michael@0: 
michael@0: // Copied from nsILookAndFeel.h, see comments on eMetric_AlertNotificationOrigin
michael@0: const NS_ALERT_HORIZONTAL = 1;
michael@0: const NS_ALERT_LEFT = 2;
michael@0: const NS_ALERT_TOP = 4;
michael@0: 
michael@0: const WINDOW_MARGIN = 10;
michael@0: 
michael@0: var gOrigin = 0; // Default value: alert from bottom right.
michael@0: var gReplacedWindow = null;
michael@0: var gAlertListener = null;
michael@0: var gAlertTextClickable = false;
michael@0: var gAlertCookie = "";
michael@0: var gIsReplaced = false;
michael@0: 
michael@0: function prefillAlertInfo() {
michael@0:   // unwrap all the args....
michael@0:   // arguments[0] --> the image src url
michael@0:   // arguments[1] --> the alert title
michael@0:   // arguments[2] --> the alert text
michael@0:   // arguments[3] --> is the text clickable?
michael@0:   // arguments[4] --> the alert cookie to be passed back to the listener
michael@0:   // arguments[5] --> the alert origin reported by the look and feel
michael@0:   // arguments[6] --> bidi
michael@0:   // arguments[7] --> lang
michael@0:   // arguments[8] --> replaced alert window (nsIDOMWindow)
michael@0:   // arguments[9] --> an optional callback listener (nsIObserver)
michael@0: 
michael@0:   switch (window.arguments.length) {
michael@0:     default:
michael@0:     case 10:
michael@0:       gAlertListener = window.arguments[9];
michael@0:     case 9:
michael@0:       gReplacedWindow = window.arguments[8];
michael@0:     case 6:
michael@0:       gOrigin = window.arguments[5];
michael@0:     case 5:
michael@0:       gAlertCookie = window.arguments[4];
michael@0:     case 4:
michael@0:       gAlertTextClickable = window.arguments[3];
michael@0:       if (gAlertTextClickable) {
michael@0:         document.getElementById('alertNotification').setAttribute('clickable', true);
michael@0:         document.getElementById('alertTextLabel').setAttribute('clickable', true);
michael@0:       }
michael@0:     case 3:
michael@0:       document.getElementById('alertTextLabel').textContent = window.arguments[2];
michael@0:     case 2:
michael@0:       document.getElementById('alertTitleLabel').setAttribute('value', window.arguments[1]);
michael@0:     case 1:
michael@0:       if (window.arguments[0]) {
michael@0:         document.getElementById('alertImage').setAttribute('src', window.arguments[0]);
michael@0:       }
michael@0:     case 0:
michael@0:       break;
michael@0:   }
michael@0: }
michael@0: 
michael@0: function onAlertLoad() {
michael@0:   const ALERT_DURATION_IMMEDIATE = 4000;
michael@0:   let alertTextBox = document.getElementById("alertTextBox");
michael@0:   let alertImageBox = document.getElementById("alertImageBox");
michael@0:   alertImageBox.style.minHeight = alertTextBox.scrollHeight + "px";
michael@0: 
michael@0:   sizeToContent();
michael@0: 
michael@0:   if (gReplacedWindow && !gReplacedWindow.closed) {
michael@0:     moveWindowToReplace(gReplacedWindow);
michael@0:     gReplacedWindow.gIsReplaced = true;
michael@0:     gReplacedWindow.close();
michael@0:   } else {
michael@0:     moveWindowToEnd();
michael@0:   }
michael@0: 
michael@0:   window.addEventListener("XULAlertClose", function() { window.close(); });
michael@0: 
michael@0:   if (Services.prefs.getBoolPref("alerts.disableSlidingEffect")) {
michael@0:     setTimeout(function() { window.close(); }, ALERT_DURATION_IMMEDIATE);
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   let alertBox = document.getElementById("alertBox");
michael@0:   alertBox.addEventListener("animationend", function hideAlert(event) {
michael@0:     if (event.animationName == "alert-animation") {
michael@0:       alertBox.removeEventListener("animationend", hideAlert, false);
michael@0:       window.close();
michael@0:     }
michael@0:   }, false);
michael@0:   alertBox.setAttribute("animate", true);
michael@0: 
michael@0:   if (gAlertListener) {
michael@0:     gAlertListener.observe(null, "alertshow", gAlertCookie);
michael@0:   }
michael@0: }
michael@0: 
michael@0: function moveWindowToReplace(aReplacedAlert) {
michael@0:   let heightDelta = window.outerHeight - aReplacedAlert.outerHeight;
michael@0: 
michael@0:   // Move windows that come after the replaced alert if the height is different.
michael@0:   if (heightDelta != 0) {
michael@0:     let windows = windowMediator.getEnumerator('alert:alert');
michael@0:     while (windows.hasMoreElements()) {
michael@0:       let alertWindow = windows.getNext();
michael@0:       // boolean to determine if the alert window is after the replaced alert.
michael@0:       let alertIsAfter = gOrigin & NS_ALERT_TOP ?
michael@0:                          alertWindow.screenY > aReplacedAlert.screenY :
michael@0:                          aReplacedAlert.screenY > alertWindow.screenY;
michael@0:       if (alertIsAfter) {
michael@0:         // The new Y position of the window.
michael@0:         let adjustedY = gOrigin & NS_ALERT_TOP ?
michael@0:                         alertWindow.screenY + heightDelta :
michael@0:                         alertWindow.screenY - heightDelta;
michael@0:         alertWindow.moveTo(alertWindow.screenX, adjustedY);
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   let adjustedY = gOrigin & NS_ALERT_TOP ? aReplacedAlert.screenY :
michael@0:                   aReplacedAlert.screenY - heightDelta;
michael@0:   window.moveTo(aReplacedAlert.screenX, adjustedY);
michael@0: }
michael@0: 
michael@0: function moveWindowToEnd() {
michael@0:   // Determine position
michael@0:   let x = gOrigin & NS_ALERT_LEFT ? screen.availLeft :
michael@0:           screen.availLeft + screen.availWidth - window.outerWidth;
michael@0:   let y = gOrigin & NS_ALERT_TOP ? screen.availTop :
michael@0:           screen.availTop + screen.availHeight - window.outerHeight;
michael@0: 
michael@0:   // Position the window at the end of all alerts.
michael@0:   let windows = windowMediator.getEnumerator('alert:alert');
michael@0:   while (windows.hasMoreElements()) {
michael@0:     let alertWindow = windows.getNext();
michael@0:     if (alertWindow != window) {
michael@0:       if (gOrigin & NS_ALERT_TOP) {
michael@0:         y = Math.max(y, alertWindow.screenY + alertWindow.outerHeight);
michael@0:       } else {
michael@0:         y = Math.min(y, alertWindow.screenY - window.outerHeight);
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   // Offset the alert by WINDOW_MARGIN pixels from the edge of the screen
michael@0:   y += gOrigin & NS_ALERT_TOP ? WINDOW_MARGIN : -WINDOW_MARGIN;
michael@0:   x += gOrigin & NS_ALERT_LEFT ? WINDOW_MARGIN : -WINDOW_MARGIN;
michael@0: 
michael@0:   window.moveTo(x, y);
michael@0: }
michael@0: 
michael@0: function onAlertBeforeUnload() {
michael@0:   if (!gIsReplaced) {
michael@0:     // Move other alert windows to fill the gap left by closing alert.
michael@0:     let heightDelta = window.outerHeight + WINDOW_MARGIN;
michael@0:     let windows = windowMediator.getEnumerator('alert:alert');
michael@0:     while (windows.hasMoreElements()) {
michael@0:       let alertWindow = windows.getNext();
michael@0:       if (alertWindow != window) {
michael@0:         if (gOrigin & NS_ALERT_TOP) {
michael@0:           if (alertWindow.screenY > window.screenY) {
michael@0:             alertWindow.moveTo(alertWindow.screenX, alertWindow.screenY - heightDelta);
michael@0:           }
michael@0:         } else {
michael@0:           if (window.screenY > alertWindow.screenY) {
michael@0:             alertWindow.moveTo(alertWindow.screenX, alertWindow.screenY + heightDelta);
michael@0:           }
michael@0:         }
michael@0:       }
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   if (gAlertListener) {
michael@0:     gAlertListener.observe(null, "alertfinished", gAlertCookie);
michael@0:   }
michael@0: }
michael@0: 
michael@0: function onAlertClick() {
michael@0:   if (gAlertListener && gAlertTextClickable) {
michael@0:     gAlertListener.observe(null, "alertclickcallback", gAlertCookie);
michael@0:   }
michael@0: 
michael@0:   window.close();
michael@0: }