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646 lines
20 KiB
JavaScript
646 lines
20 KiB
JavaScript
/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojo._base.event"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
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dojo._hasResource["dojo._base.event"] = true;
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dojo.provide("dojo._base.event");
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dojo.require("dojo._base.connect");
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// this file courtesy of the TurboAjax Group, licensed under a Dojo CLA
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(function(){
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// DOM event listener machinery
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var del = (dojo._event_listener = {
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add: function(/*DOMNode*/ node, /*String*/ name, /*Function*/ fp){
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if(!node){return;}
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name = del._normalizeEventName(name);
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fp = del._fixCallback(name, fp);
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var oname = name;
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if(
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!dojo.isIE &&
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(name == "mouseenter" || name == "mouseleave")
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){
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var ofp = fp;
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//oname = name;
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name = (name == "mouseenter") ? "mouseover" : "mouseout";
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fp = function(e){
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if(!dojo.isDescendant(e.relatedTarget, node)){
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// e.type = oname; // FIXME: doesn't take? SJM: event.type is generally immutable.
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return ofp.call(this, e);
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}
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}
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}
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node.addEventListener(name, fp, false);
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return fp; /*Handle*/
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},
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remove: function(/*DOMNode*/ node, /*String*/ event, /*Handle*/ handle){
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// summary:
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// clobbers the listener from the node
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// node:
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// DOM node to attach the event to
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// event:
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// the name of the handler to remove the function from
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// handle:
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// the handle returned from add
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if(node){
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event = del._normalizeEventName(event);
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if(!dojo.isIE && (event == "mouseenter" || event == "mouseleave")){
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event = (event == "mouseenter") ? "mouseover" : "mouseout";
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}
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node.removeEventListener(event, handle, false);
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}
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},
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_normalizeEventName: function(/*String*/ name){
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// Generally, name should be lower case, unless it is special
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// somehow (e.g. a Mozilla DOM event).
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// Remove 'on'.
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return name.slice(0,2) =="on" ? name.slice(2) : name;
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},
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_fixCallback: function(/*String*/ name, fp){
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// By default, we only invoke _fixEvent for 'keypress'
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// If code is added to _fixEvent for other events, we have
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// to revisit this optimization.
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// This also applies to _fixEvent overrides for Safari and Opera
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// below.
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return name != "keypress" ? fp : function(e){ return fp.call(this, del._fixEvent(e, this)); };
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},
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_fixEvent: function(evt, sender){
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// _fixCallback only attaches us to keypress.
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// Switch on evt.type anyway because we might
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// be called directly from dojo.fixEvent.
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switch(evt.type){
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case "keypress":
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del._setKeyChar(evt);
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break;
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}
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return evt;
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},
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_setKeyChar: function(evt){
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evt.keyChar = evt.charCode ? String.fromCharCode(evt.charCode) : '';
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evt.charOrCode = evt.keyChar || evt.keyCode;
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},
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// For IE and Safari: some ctrl-key combinations (mostly w/punctuation) do not emit a char code in IE
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// we map those virtual key codes to ascii here
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// not valid for all (non-US) keyboards, so maybe we shouldn't bother
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_punctMap: {
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106:42,
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111:47,
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186:59,
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187:43,
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188:44,
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189:45,
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190:46,
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191:47,
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192:96,
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219:91,
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220:92,
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221:93,
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222:39
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}
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});
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// DOM events
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dojo.fixEvent = function(/*Event*/ evt, /*DOMNode*/ sender){
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// summary:
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// normalizes properties on the event object including event
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// bubbling methods, keystroke normalization, and x/y positions
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// evt: Event
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// native event object
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// sender: DOMNode
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// node to treat as "currentTarget"
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return del._fixEvent(evt, sender);
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}
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dojo.stopEvent = function(/*Event*/ evt){
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// summary:
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// prevents propagation and clobbers the default action of the
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// passed event
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// evt: Event
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// The event object. If omitted, window.event is used on IE.
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evt.preventDefault();
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evt.stopPropagation();
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// NOTE: below, this method is overridden for IE
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}
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// the default listener to use on dontFix nodes, overriden for IE
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var node_listener = dojo._listener;
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// Unify connect and event listeners
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dojo._connect = function(obj, event, context, method, dontFix){
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// FIXME: need a more strict test
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var isNode = obj && (obj.nodeType||obj.attachEvent||obj.addEventListener);
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// choose one of three listener options: raw (connect.js), DOM event on a Node, custom event on a Node
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// we need the third option to provide leak prevention on broken browsers (IE)
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var lid = isNode ? (dontFix ? 2 : 1) : 0, l = [dojo._listener, del, node_listener][lid];
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// create a listener
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var h = l.add(obj, event, dojo.hitch(context, method));
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// formerly, the disconnect package contained "l" directly, but if client code
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// leaks the disconnect package (by connecting it to a node), referencing "l"
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// compounds the problem.
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// instead we return a listener id, which requires custom _disconnect below.
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// return disconnect package
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return [ obj, event, h, lid ];
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}
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dojo._disconnect = function(obj, event, handle, listener){
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([dojo._listener, del, node_listener][listener]).remove(obj, event, handle);
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}
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// Constants
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// Public: client code should test
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// keyCode against these named constants, as the
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// actual codes can vary by browser.
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dojo.keys = {
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// summary:
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// Definitions for common key values
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BACKSPACE: 8,
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TAB: 9,
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CLEAR: 12,
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ENTER: 13,
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SHIFT: 16,
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CTRL: 17,
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ALT: 18,
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META: dojo.isSafari ? 91 : 224, // the apple key on macs
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PAUSE: 19,
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CAPS_LOCK: 20,
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ESCAPE: 27,
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SPACE: 32,
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PAGE_UP: 33,
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PAGE_DOWN: 34,
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END: 35,
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HOME: 36,
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LEFT_ARROW: 37,
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UP_ARROW: 38,
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RIGHT_ARROW: 39,
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DOWN_ARROW: 40,
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INSERT: 45,
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DELETE: 46,
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HELP: 47,
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LEFT_WINDOW: 91,
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RIGHT_WINDOW: 92,
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SELECT: 93,
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NUMPAD_0: 96,
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NUMPAD_1: 97,
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NUMPAD_2: 98,
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NUMPAD_3: 99,
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NUMPAD_4: 100,
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NUMPAD_5: 101,
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NUMPAD_6: 102,
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NUMPAD_7: 103,
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NUMPAD_8: 104,
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NUMPAD_9: 105,
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NUMPAD_MULTIPLY: 106,
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NUMPAD_PLUS: 107,
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NUMPAD_ENTER: 108,
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NUMPAD_MINUS: 109,
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NUMPAD_PERIOD: 110,
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NUMPAD_DIVIDE: 111,
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F1: 112,
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F2: 113,
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F3: 114,
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F4: 115,
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F5: 116,
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F6: 117,
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F7: 118,
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F8: 119,
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F9: 120,
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F10: 121,
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F11: 122,
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F12: 123,
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F13: 124,
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F14: 125,
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F15: 126,
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NUM_LOCK: 144,
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SCROLL_LOCK: 145,
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// virtual key mapping
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copyKey: dojo.isMac && !dojo.isAIR ? (dojo.isSafari ? 91 : 224 ) : 17
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};
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var evtCopyKey = dojo.isMac ? "metaKey" : "ctrlKey";
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dojo.isCopyKey = function(e){
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// summary:
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// Checks an event for the copy key (meta on Mac, and ctrl anywhere else)
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// e: Event
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// Event object to examine
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return e[evtCopyKey]; // Boolean
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};
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// Public: decoding mouse buttons from events
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/*=====
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dojo.mouseButtons = {
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// LEFT: Number
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// Numeric value of the left mouse button for the platform.
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LEFT: 0,
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// MIDDLE: Number
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// Numeric value of the middle mouse button for the platform.
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MIDDLE: 1,
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// RIGHT: Number
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// Numeric value of the right mouse button for the platform.
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RIGHT: 2,
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isButton: function(e, button){
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// summary:
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// Checks an event object for a pressed button
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// e: Event
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// Event object to examine
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// button: Number
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// The button value (example: dojo.mouseButton.LEFT)
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return e.button == button; // Boolean
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},
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isLeft: function(e){
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// summary:
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// Checks an event object for the pressed left button
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// e: Event
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// Event object to examine
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return e.button == 0; // Boolean
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},
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isMiddle: function(e){
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// summary:
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// Checks an event object for the pressed middle button
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// e: Event
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// Event object to examine
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return e.button == 1; // Boolean
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},
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isRight: function(e){
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// summary:
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// Checks an event object for the pressed right button
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// e: Event
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// Event object to examine
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return e.button == 2; // Boolean
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}
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};
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=====*/
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if(dojo.isIE){
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dojo.mouseButtons = {
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LEFT: 1,
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MIDDLE: 4,
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RIGHT: 2,
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// helper functions
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isButton: function(e, button){ return e.button & button; },
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isLeft: function(e){ return e.button & 1; },
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isMiddle: function(e){ return e.button & 4; },
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isRight: function(e){ return e.button & 2; }
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};
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}else{
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dojo.mouseButtons = {
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LEFT: 0,
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MIDDLE: 1,
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RIGHT: 2,
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// helper functions
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isButton: function(e, button){ return e.button == button; },
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isLeft: function(e){ return e.button == 0; },
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isMiddle: function(e){ return e.button == 1; },
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isRight: function(e){ return e.button == 2; }
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};
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}
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// IE event normalization
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if(dojo.isIE){
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var _trySetKeyCode = function(e, code){
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try{
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// squelch errors when keyCode is read-only
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// (e.g. if keyCode is ctrl or shift)
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return (e.keyCode = code);
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}catch(e){
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return 0;
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}
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}
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// by default, use the standard listener
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var iel = dojo._listener;
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var listenersName = (dojo._ieListenersName = "_" + dojo._scopeName + "_listeners");
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// dispatcher tracking property
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if(!dojo.config._allow_leaks){
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// custom listener that handles leak protection for DOM events
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node_listener = iel = dojo._ie_listener = {
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// support handler indirection: event handler functions are
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// referenced here. Event dispatchers hold only indices.
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handlers: [],
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// add a listener to an object
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add: function(/*Object*/ source, /*String*/ method, /*Function*/ listener){
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source = source || dojo.global;
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var f = source[method];
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if(!f||!f[listenersName]){
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var d = dojo._getIeDispatcher();
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// original target function is special
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d.target = f && (ieh.push(f) - 1);
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// dispatcher holds a list of indices into handlers table
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d[listenersName] = [];
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// redirect source to dispatcher
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f = source[method] = d;
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}
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return f[listenersName].push(ieh.push(listener) - 1) ; /*Handle*/
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},
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// remove a listener from an object
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remove: function(/*Object*/ source, /*String*/ method, /*Handle*/ handle){
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var f = (source||dojo.global)[method], l = f && f[listenersName];
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if(f && l && handle--){
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delete ieh[l[handle]];
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delete l[handle];
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}
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}
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};
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// alias used above
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var ieh = iel.handlers;
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}
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dojo.mixin(del, {
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add: function(/*DOMNode*/ node, /*String*/ event, /*Function*/ fp){
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if(!node){return;} // undefined
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event = del._normalizeEventName(event);
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if(event=="onkeypress"){
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// we need to listen to onkeydown to synthesize
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// keypress events that otherwise won't fire
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// on IE
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var kd = node.onkeydown;
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if(!kd || !kd[listenersName] || !kd._stealthKeydownHandle){
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var h = del.add(node, "onkeydown", del._stealthKeyDown);
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kd = node.onkeydown;
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kd._stealthKeydownHandle = h;
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kd._stealthKeydownRefs = 1;
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}else{
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kd._stealthKeydownRefs++;
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}
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}
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return iel.add(node, event, del._fixCallback(fp));
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},
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remove: function(/*DOMNode*/ node, /*String*/ event, /*Handle*/ handle){
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event = del._normalizeEventName(event);
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iel.remove(node, event, handle);
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if(event=="onkeypress"){
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var kd = node.onkeydown;
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if(--kd._stealthKeydownRefs <= 0){
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iel.remove(node, "onkeydown", kd._stealthKeydownHandle);
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delete kd._stealthKeydownHandle;
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}
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}
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},
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_normalizeEventName: function(/*String*/ eventName){
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// Generally, eventName should be lower case, unless it is
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// special somehow (e.g. a Mozilla event)
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// ensure 'on'
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return eventName.slice(0,2) != "on" ? "on" + eventName : eventName;
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},
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_nop: function(){},
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_fixEvent: function(/*Event*/ evt, /*DOMNode*/ sender){
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// summary:
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// normalizes properties on the event object including event
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// bubbling methods, keystroke normalization, and x/y positions
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// evt:
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// native event object
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// sender:
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// node to treat as "currentTarget"
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if(!evt){
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var w = sender && (sender.ownerDocument || sender.document || sender).parentWindow || window;
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evt = w.event;
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}
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if(!evt){return(evt);}
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evt.target = evt.srcElement;
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evt.currentTarget = (sender || evt.srcElement);
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evt.layerX = evt.offsetX;
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evt.layerY = evt.offsetY;
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// FIXME: scroll position query is duped from dojo.html to
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// avoid dependency on that entire module. Now that HTML is in
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// Base, we should convert back to something similar there.
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var se = evt.srcElement, doc = (se && se.ownerDocument) || document;
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// DO NOT replace the following to use dojo.body(), in IE, document.documentElement should be used
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// here rather than document.body
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var docBody = ((dojo.isIE < 6) || (doc["compatMode"] == "BackCompat")) ? doc.body : doc.documentElement;
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var offset = dojo._getIeDocumentElementOffset();
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evt.pageX = evt.clientX + dojo._fixIeBiDiScrollLeft(docBody.scrollLeft || 0) - offset.x;
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evt.pageY = evt.clientY + (docBody.scrollTop || 0) - offset.y;
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if(evt.type == "mouseover"){
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evt.relatedTarget = evt.fromElement;
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}
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if(evt.type == "mouseout"){
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evt.relatedTarget = evt.toElement;
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}
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evt.stopPropagation = del._stopPropagation;
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evt.preventDefault = del._preventDefault;
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return del._fixKeys(evt);
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},
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_fixKeys: function(evt){
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switch(evt.type){
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case "keypress":
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var c = ("charCode" in evt ? evt.charCode : evt.keyCode);
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if (c==10){
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// CTRL-ENTER is CTRL-ASCII(10) on IE, but CTRL-ENTER on Mozilla
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c=0;
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evt.keyCode = 13;
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}else if(c==13||c==27){
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c=0; // Mozilla considers ENTER and ESC non-printable
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}else if(c==3){
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c=99; // Mozilla maps CTRL-BREAK to CTRL-c
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}
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// Mozilla sets keyCode to 0 when there is a charCode
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// but that stops the event on IE.
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evt.charCode = c;
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del._setKeyChar(evt);
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break;
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}
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return evt;
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},
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_stealthKeyDown: function(evt){
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// IE doesn't fire keypress for most non-printable characters.
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// other browsers do, we simulate it here.
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var kp = evt.currentTarget.onkeypress;
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// only works if kp exists and is a dispatcher
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if(!kp || !kp[listenersName]){ return; }
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// munge key/charCode
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var k=evt.keyCode;
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// These are Windows Virtual Key Codes
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// http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/WinUI/WindowsUserInterface/UserInput/VirtualKeyCodes.asp
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var unprintable = k!=13 && k!=32 && k!=27 && (k<48||k>90) && (k<96||k>111) && (k<186||k>192) && (k<219||k>222);
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// synthesize keypress for most unprintables and CTRL-keys
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if(unprintable||evt.ctrlKey){
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var c = unprintable ? 0 : k;
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if(evt.ctrlKey){
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if(k==3 || k==13){
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return; // IE will post CTRL-BREAK, CTRL-ENTER as keypress natively
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}else if(c>95 && c<106){
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c -= 48; // map CTRL-[numpad 0-9] to ASCII
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}else if((!evt.shiftKey)&&(c>=65&&c<=90)){
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c += 32; // map CTRL-[A-Z] to lowercase
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}else{
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c = del._punctMap[c] || c; // map other problematic CTRL combinations to ASCII
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}
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}
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// simulate a keypress event
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var faux = del._synthesizeEvent(evt, {type: 'keypress', faux: true, charCode: c});
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kp.call(evt.currentTarget, faux);
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evt.cancelBubble = faux.cancelBubble;
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evt.returnValue = faux.returnValue;
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_trySetKeyCode(evt, faux.keyCode);
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}
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},
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// Called in Event scope
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_stopPropagation: function(){
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this.cancelBubble = true;
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},
|
|
_preventDefault: function(){
|
|
// Setting keyCode to 0 is the only way to prevent certain keypresses (namely
|
|
// ctrl-combinations that correspond to menu accelerator keys).
|
|
// Otoh, it prevents upstream listeners from getting this information
|
|
// Try to split the difference here by clobbering keyCode only for ctrl
|
|
// combinations. If you still need to access the key upstream, bubbledKeyCode is
|
|
// provided as a workaround.
|
|
this.bubbledKeyCode = this.keyCode;
|
|
if(this.ctrlKey){_trySetKeyCode(this, 0);}
|
|
this.returnValue = false;
|
|
}
|
|
});
|
|
|
|
// override stopEvent for IE
|
|
dojo.stopEvent = function(evt){
|
|
evt = evt || window.event;
|
|
del._stopPropagation.call(evt);
|
|
del._preventDefault.call(evt);
|
|
}
|
|
}
|
|
|
|
del._synthesizeEvent = function(evt, props){
|
|
var faux = dojo.mixin({}, evt, props);
|
|
del._setKeyChar(faux);
|
|
// FIXME: would prefer to use dojo.hitch: dojo.hitch(evt, evt.preventDefault);
|
|
// but it throws an error when preventDefault is invoked on Safari
|
|
// does Event.preventDefault not support "apply" on Safari?
|
|
faux.preventDefault = function(){ evt.preventDefault(); };
|
|
faux.stopPropagation = function(){ evt.stopPropagation(); };
|
|
return faux;
|
|
}
|
|
|
|
// Opera event normalization
|
|
if(dojo.isOpera){
|
|
dojo.mixin(del, {
|
|
_fixEvent: function(evt, sender){
|
|
switch(evt.type){
|
|
case "keypress":
|
|
var c = evt.which;
|
|
if(c==3){
|
|
c=99; // Mozilla maps CTRL-BREAK to CTRL-c
|
|
}
|
|
// can't trap some keys at all, like INSERT and DELETE
|
|
// there is no differentiating info between DELETE and ".", or INSERT and "-"
|
|
c = c<41 && !evt.shiftKey ? 0 : c;
|
|
if(evt.ctrlKey && !evt.shiftKey && c>=65 && c<=90){
|
|
// lowercase CTRL-[A-Z] keys
|
|
c += 32;
|
|
}
|
|
return del._synthesizeEvent(evt, { charCode: c });
|
|
}
|
|
return evt;
|
|
}
|
|
});
|
|
}
|
|
|
|
// Webkit event normalization
|
|
if(dojo.isWebKit){
|
|
del._add = del.add;
|
|
del._remove = del.remove;
|
|
|
|
dojo.mixin(del, {
|
|
add: function(/*DOMNode*/ node, /*String*/ event, /*Function*/ fp){
|
|
if(!node){return;} // undefined
|
|
var handle = del._add(node, event, fp);
|
|
if(del._normalizeEventName(event) == "keypress"){
|
|
// we need to listen to onkeydown to synthesize
|
|
// keypress events that otherwise won't fire
|
|
// in Safari 3.1+: https://lists.webkit.org/pipermail/webkit-dev/2007-December/002992.html
|
|
handle._stealthKeyDownHandle = del._add(node, "keydown", function(evt){
|
|
//A variation on the IE _stealthKeydown function
|
|
//Synthesize an onkeypress event, but only for unprintable characters.
|
|
var k=evt.keyCode;
|
|
// These are Windows Virtual Key Codes
|
|
// http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/WinUI/WindowsUserInterface/UserInput/VirtualKeyCodes.asp
|
|
var unprintable = k!=13 && k!=32 && (k<48 || k>90) && (k<96 || k>111) && (k<186 || k>192) && (k<219 || k>222);
|
|
// synthesize keypress for most unprintables and CTRL-keys
|
|
if(unprintable || evt.ctrlKey){
|
|
var c = unprintable ? 0 : k;
|
|
if(evt.ctrlKey){
|
|
if(k==3 || k==13){
|
|
return; // IE will post CTRL-BREAK, CTRL-ENTER as keypress natively
|
|
}else if(c>95 && c<106){
|
|
c -= 48; // map CTRL-[numpad 0-9] to ASCII
|
|
}else if(!evt.shiftKey && c>=65 && c<=90){
|
|
c += 32; // map CTRL-[A-Z] to lowercase
|
|
}else{
|
|
c = del._punctMap[c] || c; // map other problematic CTRL combinations to ASCII
|
|
}
|
|
}
|
|
// simulate a keypress event
|
|
var faux = del._synthesizeEvent(evt, {type: 'keypress', faux: true, charCode: c});
|
|
fp.call(evt.currentTarget, faux);
|
|
}
|
|
});
|
|
}
|
|
return handle; /*Handle*/
|
|
},
|
|
|
|
remove: function(/*DOMNode*/ node, /*String*/ event, /*Handle*/ handle){
|
|
if(node){
|
|
if(handle._stealthKeyDownHandle){
|
|
del._remove(node, "keydown", handle._stealthKeyDownHandle);
|
|
}
|
|
del._remove(node, event, handle);
|
|
}
|
|
},
|
|
_fixEvent: function(evt, sender){
|
|
switch(evt.type){
|
|
case "keypress":
|
|
if(evt.faux){ return evt; }
|
|
var c = evt.charCode;
|
|
c = c>=32 ? c : 0;
|
|
return del._synthesizeEvent(evt, {charCode: c, faux: true});
|
|
}
|
|
return evt;
|
|
}
|
|
});
|
|
}
|
|
})();
|
|
|
|
if(dojo.isIE){
|
|
// keep this out of the closure
|
|
// closing over 'iel' or 'ieh' b0rks leak prevention
|
|
// ls[i] is an index into the master handler array
|
|
dojo._ieDispatcher = function(args, sender){
|
|
var ap = Array.prototype,
|
|
h = dojo._ie_listener.handlers,
|
|
c = args.callee,
|
|
ls = c[dojo._ieListenersName],
|
|
t = h[c.target];
|
|
// return value comes from original target function
|
|
var r = t && t.apply(sender, args);
|
|
// make local copy of listener array so it's immutable during processing
|
|
var lls = [].concat(ls);
|
|
// invoke listeners after target function
|
|
for(var i in lls){
|
|
var f = h[lls[i]];
|
|
if(!(i in ap) && f){
|
|
f.apply(sender, args);
|
|
}
|
|
}
|
|
return r;
|
|
}
|
|
dojo._getIeDispatcher = function(){
|
|
// ensure the returned function closes over nothing ("new Function" apparently doesn't close)
|
|
return new Function(dojo._scopeName + "._ieDispatcher(arguments, this)"); // function
|
|
}
|
|
// keep this out of the closure to reduce RAM allocation
|
|
dojo._event_listener._fixCallback = function(fp){
|
|
var f = dojo._event_listener._fixEvent;
|
|
return function(e){ return fp.call(this, f(e, this)); };
|
|
}
|
|
}
|
|
|
|
}
|