/jquery.ui.ipad.js
JavaScript | 223 lines | 140 code | 46 blank | 37 comment | 17 complexity | 0ee593c4a8d09bc7115a4beb62d1b193 MD5 | raw file
- /**
- * jQuery.UI.iPad plugin
- * Copyright (c) 2010 Stephen von Takach
- * licensed under MIT.
- * Date: 27/8/2010
- *
- * Project Home:
- * http://code.google.com/p/jquery-ui-for-ipad-and-iphone/
- */
-
-
- $(function() {
- //
- // Extend jQuery feature detection
- //
- $.extend($.support, {
- touch: "ontouchend" in document
- });
-
- //
- // Hook up touch events
- //
- if ($.support.touch) {
- document.addEventListener("touchstart", iPadTouchHandler, false);
- document.addEventListener("touchmove", iPadTouchHandler, false);
- document.addEventListener("touchend", iPadTouchHandler, false);
- document.addEventListener("touchcancel", iPadTouchHandler, false);
- }
- });
-
-
- var lastTap = null; // Holds last tapped element (so we can compare for double tap)
- var tapValid = false; // Are we still in the .6 second window where a double tap can occur
- var tapTimeout = null; // The timeout reference
-
- function cancelTap() {
- tapValid = false;
- }
-
-
- var rightClickPending = false; // Is a right click still feasible
- var rightClickEvent = null; // the original event
- var holdTimeout = null; // timeout reference
- var cancelMouseUp = false; // prevents a click from occuring as we want the context menu
-
-
- function cancelHold() {
- if (rightClickPending) {
- window.clearTimeout(holdTimeout);
- rightClickPending = false;
- rightClickEvent = null;
- }
- }
-
- function startHold(event) {
- if (rightClickPending)
- return;
-
- rightClickPending = true; // We could be performing a right click
- rightClickEvent = (event.changedTouches)[0];
- holdTimeout = window.setTimeout("doRightClick();", 800);
- }
-
-
- function doRightClick() {
- rightClickPending = false;
-
- //
- // We need to mouse up (as we were down)
- //
- var first = rightClickEvent,
- simulatedEvent = document.createEvent("MouseEvent");
- simulatedEvent.initMouseEvent("mouseup", true, true, window, 1, first.screenX, first.screenY, first.clientX, first.clientY,
- false, false, false, false, 0, null);
- first.target.dispatchEvent(simulatedEvent);
-
- //
- // emulate a right click
- //
- simulatedEvent = document.createEvent("MouseEvent");
- simulatedEvent.initMouseEvent("mousedown", true, true, window, 1, first.screenX, first.screenY, first.clientX, first.clientY,
- false, false, false, false, 2, null);
- first.target.dispatchEvent(simulatedEvent);
-
- //
- // Show a context menu
- //
- simulatedEvent = document.createEvent("MouseEvent");
- simulatedEvent.initMouseEvent("contextmenu", true, true, window, 1, first.screenX + 50, first.screenY + 5, first.clientX + 50, first.clientY + 5,
- false, false, false, false, 2, null);
- first.target.dispatchEvent(simulatedEvent);
-
-
- //
- // Note:: I don't mouse up the right click here however feel free to add if required
- //
-
-
- cancelMouseUp = true;
- rightClickEvent = null; // Release memory
- }
-
-
- //
- // mouse over event then mouse down
- //
- function iPadTouchStart(event) {
- var touches = event.changedTouches,
- first = touches[0],
- type = "mouseover",
- simulatedEvent = document.createEvent("MouseEvent");
- //
- // Mouse over first - I have live events attached on mouse over
- //
- simulatedEvent.initMouseEvent(type, true, true, window, 1, first.screenX, first.screenY, first.clientX, first.clientY,
- false, false, false, false, 0, null);
- first.target.dispatchEvent(simulatedEvent);
-
- type = "mousedown";
- simulatedEvent = document.createEvent("MouseEvent");
-
- simulatedEvent.initMouseEvent(type, true, true, window, 1, first.screenX, first.screenY, first.clientX, first.clientY,
- false, false, false, false, 0, null);
- first.target.dispatchEvent(simulatedEvent);
-
-
- if (!tapValid) {
- lastTap = first.target;
- tapValid = true;
- tapTimeout = window.setTimeout("cancelTap();", 600);
- startHold(event);
- }
- else {
- window.clearTimeout(tapTimeout);
-
- //
- // If a double tap is still a possibility and the elements are the same
- // Then perform a double click
- //
- if (first.target == lastTap) {
- lastTap = null;
- tapValid = false;
-
- type = "click";
- simulatedEvent = document.createEvent("MouseEvent");
-
- simulatedEvent.initMouseEvent(type, true, true, window, 1, first.screenX, first.screenY, first.clientX, first.clientY,
- false, false, false, false, 0/*left*/, null);
- first.target.dispatchEvent(simulatedEvent);
-
- type = "dblclick";
- simulatedEvent = document.createEvent("MouseEvent");
-
- simulatedEvent.initMouseEvent(type, true, true, window, 1, first.screenX, first.screenY, first.clientX, first.clientY,
- false, false, false, false, 0/*left*/, null);
- first.target.dispatchEvent(simulatedEvent);
- }
- else {
- lastTap = first.target;
- tapValid = true;
- tapTimeout = window.setTimeout("cancelTap();", 600);
- startHold(event);
- }
- }
- }
-
- function iPadTouchHandler(event) {
- var type = "",
- button = 0; /*left*/
-
- if (event.touches.length > 1)
- return;
-
- switch (event.type) {
- case "touchstart":
- if ($(event.changedTouches[0].target).is("select")) {
- return;
- }
- iPadTouchStart(event); /*We need to trigger two events here to support one touch drag and drop*/
- event.preventDefault();
- return false;
- break;
-
- case "touchmove":
- cancelHold();
- type = "mousemove";
- event.preventDefault();
- break;
-
- case "touchend":
- if (cancelMouseUp) {
- cancelMouseUp = false;
- event.preventDefault();
- return false;
- }
- cancelHold();
- type = "mouseup";
- break;
-
- default:
- return;
- }
-
- var touches = event.changedTouches,
- first = touches[0],
- simulatedEvent = document.createEvent("MouseEvent");
-
- simulatedEvent.initMouseEvent(type, true, true, window, 1, first.screenX, first.screenY, first.clientX, first.clientY,
- false, false, false, false, button, null);
-
- first.target.dispatchEvent(simulatedEvent);
-
- if (type == "mouseup" && tapValid && first.target == lastTap) { // This actually emulates the ipads default behaviour (which we prevented)
- simulatedEvent = document.createEvent("MouseEvent"); // This check avoids click being emulated on a double tap
-
- simulatedEvent.initMouseEvent("click", true, true, window, 1, first.screenX, first.screenY, first.clientX, first.clientY,
- false, false, false, false, button, null);
-
- first.target.dispatchEvent(simulatedEvent);
- }
- }
-
-