From e44a7e37b6c7b5961adaffc62b9042b8d442938e Mon Sep 17 00:00:00 2001 From: mensonge Date: Thu, 13 Nov 2008 09:49:11 +0000 Subject: New feature: basic Ajax suggestion for tags and implementation of Dojo toolkit git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f --- includes/js/dojo/_base/event.js | 529 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 529 insertions(+) create mode 100644 includes/js/dojo/_base/event.js (limited to 'includes/js/dojo/_base/event.js') diff --git a/includes/js/dojo/_base/event.js b/includes/js/dojo/_base/event.js new file mode 100644 index 0000000..41cfd4d --- /dev/null +++ b/includes/js/dojo/_base/event.js @@ -0,0 +1,529 @@ +if(!dojo._hasResource["dojo._base.event"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. +dojo._hasResource["dojo._base.event"] = true; +dojo.provide("dojo._base.event"); +dojo.require("dojo._base.connect"); + +// this file courtesy of the TurboAjax Group, licensed under a Dojo CLA + +(function(){ + // DOM event listener machinery + var del = (dojo._event_listener = { + add: function(/*DOMNode*/node, /*String*/name, /*Function*/fp){ + if(!node){return;} + name = del._normalizeEventName(name); + fp = del._fixCallback(name, fp); + var oname = name; + if(!dojo.isIE && (name == "mouseenter" || name == "mouseleave")){ + var ofp = fp; + //oname = name; + name = (name == "mouseenter") ? "mouseover" : "mouseout"; + fp = function(e){ + // thanks ben! + if(!dojo.isDescendant(e.relatedTarget, node)){ + // e.type = oname; // FIXME: doesn't take? SJM: event.type is generally immutable. + return ofp.call(this, e); + } + } + } + node.addEventListener(name, fp, false); + return fp; /*Handle*/ + }, + remove: function(/*DOMNode*/node, /*String*/event, /*Handle*/handle){ + // summary: + // clobbers the listener from the node + // node: + // DOM node to attach the event to + // event: + // the name of the handler to remove the function from + // handle: + // the handle returned from add + if (node){ + node.removeEventListener(del._normalizeEventName(event), handle, false); + } + }, + _normalizeEventName: function(/*String*/name){ + // Generally, name should be lower case, unless it is special + // somehow (e.g. a Mozilla DOM event). + // Remove 'on'. + return name.slice(0,2) =="on" ? name.slice(2) : name; + }, + _fixCallback: function(/*String*/name, fp){ + // By default, we only invoke _fixEvent for 'keypress' + // If code is added to _fixEvent for other events, we have + // to revisit this optimization. + // This also applies to _fixEvent overrides for Safari and Opera + // below. + return name != "keypress" ? fp : function(e){ return fp.call(this, del._fixEvent(e, this)); }; + }, + _fixEvent: function(evt, sender){ + // _fixCallback only attaches us to keypress. + // Switch on evt.type anyway because we might + // be called directly from dojo.fixEvent. + switch(evt.type){ + case "keypress": + del._setKeyChar(evt); + break; + } + return evt; + }, + _setKeyChar: function(evt){ + evt.keyChar = evt.charCode ? String.fromCharCode(evt.charCode) : ''; + } + }); + + // DOM events + + dojo.fixEvent = function(/*Event*/evt, /*DOMNode*/sender){ + // summary: + // normalizes properties on the event object including event + // bubbling methods, keystroke normalization, and x/y positions + // evt: Event + // native event object + // sender: DOMNode + // node to treat as "currentTarget" + return del._fixEvent(evt, sender); + } + + dojo.stopEvent = function(/*Event*/evt){ + // summary: + // prevents propagation and clobbers the default action of the + // passed event + // evt: Event + // The event object. If omitted, window.event is used on IE. + evt.preventDefault(); + evt.stopPropagation(); + // NOTE: below, this method is overridden for IE + } + + // the default listener to use on dontFix nodes, overriden for IE + var node_listener = dojo._listener; + + // Unify connect and event listeners + dojo._connect = function(obj, event, context, method, dontFix){ + // FIXME: need a more strict test + var isNode = obj && (obj.nodeType||obj.attachEvent||obj.addEventListener); + // choose one of three listener options: raw (connect.js), DOM event on a Node, custom event on a Node + // we need the third option to provide leak prevention on broken browsers (IE) + var lid = !isNode ? 0 : (!dontFix ? 1 : 2), l = [dojo._listener, del, node_listener][lid]; + // create a listener + var h = l.add(obj, event, dojo.hitch(context, method)); + // formerly, the disconnect package contained "l" directly, but if client code + // leaks the disconnect package (by connecting it to a node), referencing "l" + // compounds the problem. + // instead we return a listener id, which requires custom _disconnect below. + // return disconnect package + return [ obj, event, h, lid ]; + } + + dojo._disconnect = function(obj, event, handle, listener){ + ([dojo._listener, del, node_listener][listener]).remove(obj, event, handle); + } + + // Constants + + // Public: client code should test + // keyCode against these named constants, as the + // actual codes can vary by browser. + dojo.keys = { + // summary: definitions for common key values + BACKSPACE: 8, + TAB: 9, + CLEAR: 12, + ENTER: 13, + SHIFT: 16, + CTRL: 17, + ALT: 18, + PAUSE: 19, + CAPS_LOCK: 20, + ESCAPE: 27, + SPACE: 32, + PAGE_UP: 33, + PAGE_DOWN: 34, + END: 35, + HOME: 36, + LEFT_ARROW: 37, + UP_ARROW: 38, + RIGHT_ARROW: 39, + DOWN_ARROW: 40, + INSERT: 45, + DELETE: 46, + HELP: 47, + LEFT_WINDOW: 91, + RIGHT_WINDOW: 92, + SELECT: 93, + NUMPAD_0: 96, + NUMPAD_1: 97, + NUMPAD_2: 98, + NUMPAD_3: 99, + NUMPAD_4: 100, + NUMPAD_5: 101, + NUMPAD_6: 102, + NUMPAD_7: 103, + NUMPAD_8: 104, + NUMPAD_9: 105, + NUMPAD_MULTIPLY: 106, + NUMPAD_PLUS: 107, + NUMPAD_ENTER: 108, + NUMPAD_MINUS: 109, + NUMPAD_PERIOD: 110, + NUMPAD_DIVIDE: 111, + F1: 112, + F2: 113, + F3: 114, + F4: 115, + F5: 116, + F6: 117, + F7: 118, + F8: 119, + F9: 120, + F10: 121, + F11: 122, + F12: 123, + F13: 124, + F14: 125, + F15: 126, + NUM_LOCK: 144, + SCROLL_LOCK: 145 + }; + + // IE event normalization + if(dojo.isIE){ + var _trySetKeyCode = function(e, code){ + try{ + // squelch errors when keyCode is read-only + // (e.g. if keyCode is ctrl or shift) + return (e.keyCode = code); + }catch(e){ + return 0; + } + } + + // by default, use the standard listener + var iel = dojo._listener; + // dispatcher tracking property + if(!dojo.config._allow_leaks){ + // custom listener that handles leak protection for DOM events + node_listener = iel = dojo._ie_listener = { + // support handler indirection: event handler functions are + // referenced here. Event dispatchers hold only indices. + handlers: [], + // add a listener to an object + add: function(/*Object*/ source, /*String*/ method, /*Function*/ listener){ + source = source || dojo.global; + var f = source[method]; + if(!f||!f._listeners){ + var d = dojo._getIeDispatcher(); + // original target function is special + d.target = f && (ieh.push(f) - 1); + // dispatcher holds a list of indices into handlers table + d._listeners = []; + // redirect source to dispatcher + f = source[method] = d; + } + return f._listeners.push(ieh.push(listener) - 1) ; /*Handle*/ + }, + // remove a listener from an object + remove: function(/*Object*/ source, /*String*/ method, /*Handle*/ handle){ + var f = (source||dojo.global)[method], l = f && f._listeners; + if(f && l && handle--){ + delete ieh[l[handle]]; + delete l[handle]; + } + } + }; + // alias used above + var ieh = iel.handlers; + } + + dojo.mixin(del, { + add: function(/*DOMNode*/node, /*String*/event, /*Function*/fp){ + if(!node){return;} // undefined + event = del._normalizeEventName(event); + if(event=="onkeypress"){ + // we need to listen to onkeydown to synthesize + // keypress events that otherwise won't fire + // on IE + var kd = node.onkeydown; + if(!kd || !kd._listeners || !kd._stealthKeydownHandle){ + var h = del.add(node, "onkeydown", del._stealthKeyDown); + kd = node.onkeydown; + kd._stealthKeydownHandle = h; + kd._stealthKeydownRefs = 1; + }else{ + kd._stealthKeydownRefs++; + } + } + return iel.add(node, event, del._fixCallback(fp)); + }, + remove: function(/*DOMNode*/node, /*String*/event, /*Handle*/handle){ + event = del._normalizeEventName(event); + iel.remove(node, event, handle); + if(event=="onkeypress"){ + var kd = node.onkeydown; + if(--kd._stealthKeydownRefs <= 0){ + iel.remove(node, "onkeydown", kd._stealthKeydownHandle); + delete kd._stealthKeydownHandle; + } + } + }, + _normalizeEventName: function(/*String*/eventName){ + // Generally, eventName should be lower case, unless it is + // special somehow (e.g. a Mozilla event) + // ensure 'on' + return eventName.slice(0,2) != "on" ? "on" + eventName : eventName; + }, + _nop: function(){}, + _fixEvent: function(/*Event*/evt, /*DOMNode*/sender){ + // summary: + // normalizes properties on the event object including event + // bubbling methods, keystroke normalization, and x/y positions + // evt: native event object + // sender: node to treat as "currentTarget" + if(!evt){ + var w = sender && (sender.ownerDocument || sender.document || sender).parentWindow || window; + evt = w.event; + } + if(!evt){return(evt);} + evt.target = evt.srcElement; + evt.currentTarget = (sender || evt.srcElement); + evt.layerX = evt.offsetX; + evt.layerY = evt.offsetY; + // FIXME: scroll position query is duped from dojo.html to + // avoid dependency on that entire module. Now that HTML is in + // Base, we should convert back to something similar there. + var se = evt.srcElement, doc = (se && se.ownerDocument) || document; + // DO NOT replace the following to use dojo.body(), in IE, document.documentElement should be used + // here rather than document.body + var docBody = ((dojo.isIE < 6) || (doc["compatMode"] == "BackCompat")) ? doc.body : doc.documentElement; + var offset = dojo._getIeDocumentElementOffset(); + evt.pageX = evt.clientX + dojo._fixIeBiDiScrollLeft(docBody.scrollLeft || 0) - offset.x; + evt.pageY = evt.clientY + (docBody.scrollTop || 0) - offset.y; + if(evt.type == "mouseover"){ + evt.relatedTarget = evt.fromElement; + } + if(evt.type == "mouseout"){ + evt.relatedTarget = evt.toElement; + } + evt.stopPropagation = del._stopPropagation; + evt.preventDefault = del._preventDefault; + return del._fixKeys(evt); + }, + _fixKeys: function(evt){ + switch(evt.type){ + case "keypress": + var c = ("charCode" in evt ? evt.charCode : evt.keyCode); + if (c==10){ + // CTRL-ENTER is CTRL-ASCII(10) on IE, but CTRL-ENTER on Mozilla + c=0; + evt.keyCode = 13; + }else if(c==13||c==27){ + c=0; // Mozilla considers ENTER and ESC non-printable + }else if(c==3){ + c=99; // Mozilla maps CTRL-BREAK to CTRL-c + } + // Mozilla sets keyCode to 0 when there is a charCode + // but that stops the event on IE. + evt.charCode = c; + del._setKeyChar(evt); + break; + } + return evt; + }, + // some ctrl-key combinations (mostly w/punctuation) do not emit a char code in IE + // we map those virtual key codes to ascii here + // not valid for all (non-US) keyboards, so maybe we shouldn't bother + _punctMap: { + 106:42, + 111:47, + 186:59, + 187:43, + 188:44, + 189:45, + 190:46, + 191:47, + 192:96, + 219:91, + 220:92, + 221:93, + 222:39 + }, + _stealthKeyDown: function(evt){ + // IE doesn't fire keypress for most non-printable characters. + // other browsers do, we simulate it here. + var kp = evt.currentTarget.onkeypress; + // only works if kp exists and is a dispatcher + if(!kp || !kp._listeners){ return; } + // munge key/charCode + 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!=27)&&(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}); + kp.call(evt.currentTarget, faux); + evt.cancelBubble = faux.cancelBubble; + evt.returnValue = faux.returnValue; + _trySetKeyCode(evt, faux.keyCode); + } + }, + // Called in Event scope + _stopPropagation: function(){ + this.cancelBubble = true; + }, + _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; + } + }); + } + + // Safari event normalization + if(dojo.isSafari){ + dojo.mixin(del, { + _fixEvent: function(evt, sender){ + switch(evt.type){ + case "keypress": + var c = evt.charCode, s = evt.shiftKey, k = evt.keyCode; + // FIXME: This is a hack, suggest we rethink keyboard strategy. + // Arrow and page keys have 0 "keyCode" in keypress events.on Safari for Windows + k = k || identifierMap[evt.keyIdentifier] || 0; + if(evt.keyIdentifier=="Enter"){ + c = 0; // differentiate Enter from CTRL-m (both code 13) + }else if((evt.ctrlKey)&&(c>0)&&(c<27)){ + c += 96; // map CTRL-[A-Z] codes to ASCII + } else if (c==dojo.keys.SHIFT_TAB) { + c = dojo.keys.TAB; // morph SHIFT_TAB into TAB + shiftKey: true + s = true; + } else { + c = (c>=32 && c<63232 ? c : 0); // avoid generating keyChar for non-printables + } + return del._synthesizeEvent(evt, {charCode: c, shiftKey: s, keyCode: k}); + } + return evt; + } + }); + + dojo.mixin(dojo.keys, { + SHIFT_TAB: 25, + UP_ARROW: 63232, + DOWN_ARROW: 63233, + LEFT_ARROW: 63234, + RIGHT_ARROW: 63235, + F1: 63236, + F2: 63237, + F3: 63238, + F4: 63239, + F5: 63240, + F6: 63241, + F7: 63242, + F8: 63243, + F9: 63244, + F10: 63245, + F11: 63246, + F12: 63247, + PAUSE: 63250, + DELETE: 63272, + HOME: 63273, + END: 63275, + PAGE_UP: 63276, + PAGE_DOWN: 63277, + INSERT: 63302, + PRINT_SCREEN: 63248, + SCROLL_LOCK: 63249, + NUM_LOCK: 63289 + }); + var dk = dojo.keys, identifierMap = { "Up": dk.UP_ARROW, "Down": dk.DOWN_ARROW, "Left": dk.LEFT_ARROW, "Right": dk.RIGHT_ARROW, "PageUp": dk.PAGE_UP, "PageDown": dk.PAGE_DOWN }; + } +})(); + +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._listeners, t=h[c.target]; + // return value comes from original target function + var r = t && t.apply(sender, args); + // invoke listeners after target function + for(var i in ls){ + if(!(i in ap)){ + h[ls[i]].apply(sender, args); + } + } + return r; + } + dojo._getIeDispatcher = function(){ + // ensure the returned function closes over nothing + 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)); }; + } +} + +} -- cgit v1.2.3-54-g00ecf