/**
* @class Ext.EventObject
Just as {@link Ext.Element} wraps around a native DOM node, Ext.EventObject
wraps the browser's native event-object normalizing cross-browser differences,
such as which mouse button is clicked, keys pressed, mechanisms to stop
event-propagation along with a method to prevent default actions from taking place.
For example:
function handleClick(e, t){ // e is not a standard event object, it is a Ext.EventObject
e.preventDefault();
var target = e.getTarget(); // same as t (the target HTMLElement)
...
}
var myDiv = {@link Ext#get Ext.get}("myDiv"); // get reference to an {@link Ext.Element}
myDiv.on( // 'on' is shorthand for addListener
"click", // perform an action on click of myDiv
handleClick // reference to the action handler
);
// other methods to do the same:
Ext.EventManager.on("myDiv", 'click', handleClick);
Ext.EventManager.addListener("myDiv", 'click', handleClick);
* @singleton
* @markdown
*/
Ext.define('Ext.EventObjectImpl', {
uses: ['Ext.util.Point'],
/** Key constant @type Number */
BACKSPACE: 8,
/** Key constant @type Number */
TAB: 9,
/** Key constant @type Number */
NUM_CENTER: 12,
/** Key constant @type Number */
ENTER: 13,
/** Key constant @type Number */
RETURN: 13,
/** Key constant @type Number */
SHIFT: 16,
/** Key constant @type Number */
CTRL: 17,
/** Key constant @type Number */
ALT: 18,
/** Key constant @type Number */
PAUSE: 19,
/** Key constant @type Number */
CAPS_LOCK: 20,
/** Key constant @type Number */
ESC: 27,
/** Key constant @type Number */
SPACE: 32,
/** Key constant @type Number */
PAGE_UP: 33,
/** Key constant @type Number */
PAGE_DOWN: 34,
/** Key constant @type Number */
END: 35,
/** Key constant @type Number */
HOME: 36,
/** Key constant @type Number */
LEFT: 37,
/** Key constant @type Number */
UP: 38,
/** Key constant @type Number */
RIGHT: 39,
/** Key constant @type Number */
DOWN: 40,
/** Key constant @type Number */
PRINT_SCREEN: 44,
/** Key constant @type Number */
INSERT: 45,
/** Key constant @type Number */
DELETE: 46,
/** Key constant @type Number */
ZERO: 48,
/** Key constant @type Number */
ONE: 49,
/** Key constant @type Number */
TWO: 50,
/** Key constant @type Number */
THREE: 51,
/** Key constant @type Number */
FOUR: 52,
/** Key constant @type Number */
FIVE: 53,
/** Key constant @type Number */
SIX: 54,
/** Key constant @type Number */
SEVEN: 55,
/** Key constant @type Number */
EIGHT: 56,
/** Key constant @type Number */
NINE: 57,
/** Key constant @type Number */
A: 65,
/** Key constant @type Number */
B: 66,
/** Key constant @type Number */
C: 67,
/** Key constant @type Number */
D: 68,
/** Key constant @type Number */
E: 69,
/** Key constant @type Number */
F: 70,
/** Key constant @type Number */
G: 71,
/** Key constant @type Number */
H: 72,
/** Key constant @type Number */
I: 73,
/** Key constant @type Number */
J: 74,
/** Key constant @type Number */
K: 75,
/** Key constant @type Number */
L: 76,
/** Key constant @type Number */
M: 77,
/** Key constant @type Number */
N: 78,
/** Key constant @type Number */
O: 79,
/** Key constant @type Number */
P: 80,
/** Key constant @type Number */
Q: 81,
/** Key constant @type Number */
R: 82,
/** Key constant @type Number */
S: 83,
/** Key constant @type Number */
T: 84,
/** Key constant @type Number */
U: 85,
/** Key constant @type Number */
V: 86,
/** Key constant @type Number */
W: 87,
/** Key constant @type Number */
X: 88,
/** Key constant @type Number */
Y: 89,
/** Key constant @type Number */
Z: 90,
CONTEXT_MENU: 93,
/** Key constant @type Number */
NUM_ZERO: 96,
/** Key constant @type Number */
NUM_ONE: 97,
/** Key constant @type Number */
NUM_TWO: 98,
/** Key constant @type Number */
NUM_THREE: 99,
/** Key constant @type Number */
NUM_FOUR: 100,
/** Key constant @type Number */
NUM_FIVE: 101,
/** Key constant @type Number */
NUM_SIX: 102,
/** Key constant @type Number */
NUM_SEVEN: 103,
/** Key constant @type Number */
NUM_EIGHT: 104,
/** Key constant @type Number */
NUM_NINE: 105,
/** Key constant @type Number */
NUM_MULTIPLY: 106,
/** Key constant @type Number */
NUM_PLUS: 107,
/** Key constant @type Number */
NUM_MINUS: 109,
/** Key constant @type Number */
NUM_PERIOD: 110,
/** Key constant @type Number */
NUM_DIVISION: 111,
/** Key constant @type Number */
F1: 112,
/** Key constant @type Number */
F2: 113,
/** Key constant @type Number */
F3: 114,
/** Key constant @type Number */
F4: 115,
/** Key constant @type Number */
F5: 116,
/** Key constant @type Number */
F6: 117,
/** Key constant @type Number */
F7: 118,
/** Key constant @type Number */
F8: 119,
/** Key constant @type Number */
F9: 120,
/** Key constant @type Number */
F10: 121,
/** Key constant @type Number */
F11: 122,
/** Key constant @type Number */
F12: 123,
/**
* The mouse wheel delta scaling factor. This value depends on browser version and OS and
* attempts to produce a similar scrolling experience across all platforms and browsers.
*
* To change this value:
*
* Ext.EventObjectImpl.prototype.WHEEL_SCALE = 72;
*
* @type Number
* @markdown
*/
WHEEL_SCALE: (function () {
var scale;
if (Ext.isGecko) {
// Firefox uses 3 on all platforms
scale = 3;
} else if (Ext.isMac) {
// Continuous scrolling devices have momentum and produce much more scroll than
// discrete devices on the same OS and browser. To make things exciting, Safari
// (and not Chrome) changed from small values to 120 (like IE).
if (Ext.isSafari && Ext.webKitVersion >= 532.0) {
// Safari changed the scrolling factor to match IE (for details see
// https://bugs.webkit.org/show_bug.cgi?id=24368). The WebKit version where this
// change was introduced was 532.0
// Detailed discussion:
// https://bugs.webkit.org/show_bug.cgi?id=29601
// http://trac.webkit.org/browser/trunk/WebKit/chromium/src/mac/WebInputEventFactory.mm#L1063
scale = 120;
} else {
// MS optical wheel mouse produces multiples of 12 which is close enough
// to help tame the speed of the continuous mice...
scale = 12;
}
// Momentum scrolling produces very fast scrolling, so increase the scale factor
// to help produce similar results cross platform. This could be even larger and
// it would help those mice, but other mice would become almost unusable as a
// result (since we cannot tell which device type is in use).
scale *= 3;
} else {
// IE, Opera and other Windows browsers use 120.
scale = 120;
}
return scale;
})(),
/**
* Simple click regex
* @private
*/
clickRe: /(dbl)?click/,
// safari keypress events for special keys return bad keycodes
safariKeys: {
3: 13, // enter
63234: 37, // left
63235: 39, // right
63232: 38, // up
63233: 40, // down
63276: 33, // page up
63277: 34, // page down
63272: 46, // delete
63273: 36, // home
63275: 35 // end
},
// normalize button clicks, don't see any way to feature detect this.
btnMap: Ext.isIE ? {
1: 0,
4: 1,
2: 2
} : {
0: 0,
1: 1,
2: 2
},
constructor: function(event, freezeEvent){
if (event) {
this.setEvent(event.browserEvent || event, freezeEvent);
}
},
setEvent: function(event, freezeEvent){
var me = this, button, options;
if (event == me || (event && event.browserEvent)) { // already wrapped
return event;
}
me.browserEvent = event;
if (event) {
// normalize buttons
button = event.button ? me.btnMap[event.button] : (event.which ? event.which - 1 : -1);
if (me.clickRe.test(event.type) && button == -1) {
button = 0;
}
options = {
type: event.type,
button: button,
shiftKey: event.shiftKey,
// mac metaKey behaves like ctrlKey
ctrlKey: event.ctrlKey || event.metaKey || false,
altKey: event.altKey,
// in getKey these will be normalized for the mac
keyCode: event.keyCode,
charCode: event.charCode,
// cache the targets for the delayed and or buffered events
target: Ext.EventManager.getTarget(event),
relatedTarget: Ext.EventManager.getRelatedTarget(event),
currentTarget: event.currentTarget,
xy: (freezeEvent ? me.getXY() : null)
};
} else {
options = {
button: -1,
shiftKey: false,
ctrlKey: false,
altKey: false,
keyCode: 0,
charCode: 0,
target: null,
xy: [0, 0]
};
}
Ext.apply(me, options);
return me;
},
/**
* Stop the event (preventDefault and stopPropagation)
*/
stopEvent: function(){
this.stopPropagation();
this.preventDefault();
},
/**
* Prevents the browsers default handling of the event.
*/
preventDefault: function(){
if (this.browserEvent) {
Ext.EventManager.preventDefault(this.browserEvent);
}
},
/**
* Cancels bubbling of the event.
*/
stopPropagation: function(){
var browserEvent = this.browserEvent;
if (browserEvent) {
if (browserEvent.type == 'mousedown') {
Ext.EventManager.stoppedMouseDownEvent.fire(this);
}
Ext.EventManager.stopPropagation(browserEvent);
}
},
/**
* Gets the character code for the event.
* @return {Number}
*/
getCharCode: function(){
return this.charCode || this.keyCode;
},
/**
* Returns a normalized keyCode for the event.
* @return {Number} The key code
*/
getKey: function(){
return this.normalizeKey(this.keyCode || this.charCode);
},
/**
* Normalize key codes across browsers
* @private
* @param {Number} key The key code
* @return {Number} The normalized code
*/
normalizeKey: function(key){
// can't feature detect this
return Ext.isWebKit ? (this.safariKeys[key] || key) : key;
},
/**
* Gets the x coordinate of the event.
* @return {Number}
* @deprecated 4.0 Replaced by {@link #getX}
*/
getPageX: function(){
return this.getX();
},
/**
* Gets the y coordinate of the event.
* @return {Number}
* @deprecated 4.0 Replaced by {@link #getY}
*/
getPageY: function(){
return this.getY();
},
/**
* Gets the x coordinate of the event.
* @return {Number}
*/
getX: function() {
return this.getXY()[0];
},
/**
* Gets the y coordinate of the event.
* @return {Number}
*/
getY: function() {
return this.getXY()[1];
},
/**
* Gets the page coordinates of the event.
* @return {Number[]} The xy values like [x, y]
*/
getXY: function() {
if (!this.xy) {
// same for XY
this.xy = Ext.EventManager.getPageXY(this.browserEvent);
}
return this.xy;
},
/**
* Gets the target for the event.
* @param {String} selector (optional) A simple selector to filter the target or look for an ancestor of the target
* @param {Number/HTMLElement} maxDepth (optional) The max depth to search as a number or element (defaults to 10 || document.body)
* @param {Boolean} returnEl (optional) True to return a Ext.Element object instead of DOM node
* @return {HTMLElement}
*/
getTarget : function(selector, maxDepth, returnEl){
if (selector) {
return Ext.fly(this.target).findParent(selector, maxDepth, returnEl);
}
return returnEl ? Ext.get(this.target) : this.target;
},
/**
* Gets the related target.
* @param {String} selector (optional) A simple selector to filter the target or look for an ancestor of the target
* @param {Number/HTMLElement} maxDepth (optional) The max depth to search as a number or element (defaults to 10 || document.body)
* @param {Boolean} returnEl (optional) True to return a Ext.Element object instead of DOM node
* @return {HTMLElement}
*/
getRelatedTarget : function(selector, maxDepth, returnEl){
if (selector) {
return Ext.fly(this.relatedTarget).findParent(selector, maxDepth, returnEl);
}
return returnEl ? Ext.get(this.relatedTarget) : this.relatedTarget;
},
/**
* Correctly scales a given wheel delta.
* @param {Number} delta The delta value.
*/
correctWheelDelta : function (delta) {
var scale = this.WHEEL_SCALE,
ret = Math.round(delta / scale);
if (!ret && delta) {
ret = (delta < 0) ? -1 : 1; // don't allow non-zero deltas to go to zero!
}
return ret;
},
/**
* Returns the mouse wheel deltas for this event.
* @return {Object} An object with "x" and "y" properties holding the mouse wheel deltas.
*/
getWheelDeltas : function () {
var me = this,
event = me.browserEvent,
dx = 0, dy = 0; // the deltas
if (Ext.isDefined(event.wheelDeltaX)) { // WebKit has both dimensions
dx = event.wheelDeltaX;
dy = event.wheelDeltaY;
} else if (event.wheelDelta) { // old WebKit and IE
dy = event.wheelDelta;
} else if (event.detail) { // Gecko
dy = -event.detail; // gecko is backwards
// Gecko sometimes returns really big values if the user changes settings to
// scroll a whole page per scroll
if (dy > 100) {
dy = 3;
} else if (dy < -100) {
dy = -3;
}
// Firefox 3.1 adds an axis field to the event to indicate direction of
// scroll. See https://developer.mozilla.org/en/Gecko-Specific_DOM_Events
if (Ext.isDefined(event.axis) && event.axis === event.HORIZONTAL_AXIS) {
dx = dy;
dy = 0;
}
}
return {
x: me.correctWheelDelta(dx),
y: me.correctWheelDelta(dy)
};
},
/**
* Normalizes mouse wheel y-delta across browsers. To get x-delta information, use
* {@link #getWheelDeltas} instead.
* @return {Number} The mouse wheel y-delta
*/
getWheelDelta : function(){
var deltas = this.getWheelDeltas();
return deltas.y;
},
/**
* Returns true if the target of this event is a child of el. Unless the allowEl parameter is set, it will return false if if the target is el.
* Example usage:<pre><code>
// Handle click on any child of an element
Ext.getBody().on('click', function(e){
if(e.within('some-el')){
alert('Clicked on a child of some-el!');
}
});
// Handle click directly on an element, ignoring clicks on child nodes
Ext.getBody().on('click', function(e,t){
if((t.id == 'some-el') && !e.within(t, true)){
alert('Clicked directly on some-el!');
}
});
</code></pre>
* @param {String/HTMLElement/Ext.Element} el The id, DOM element or Ext.Element to check
* @param {Boolean} related (optional) true to test if the related target is within el instead of the target
* @param {Boolean} allowEl (optional) true to also check if the passed element is the target or related target
* @return {Boolean}
*/
within : function(el, related, allowEl){
if(el){
var t = related ? this.getRelatedTarget() : this.getTarget(),
result;
if (t) {
result = Ext.fly(el).contains(t);
if (!result && allowEl) {
result = t == Ext.getDom(el);
}
return result;
}
}
return false;
},
/**
* Checks if the key pressed was a "navigation" key
* @return {Boolean} True if the press is a navigation keypress
*/
isNavKeyPress : function(){
var me = this,
k = this.normalizeKey(me.keyCode);
return (k >= 33 && k <= 40) || // Page Up/Down, End, Home, Left, Up, Right, Down
k == me.RETURN ||
k == me.TAB ||
k == me.ESC;
},
/**
* Checks if the key pressed was a "special" key
* @return {Boolean} True if the press is a special keypress
*/
isSpecialKey : function(){
var k = this.normalizeKey(this.keyCode);
return (this.type == 'keypress' && this.ctrlKey) ||
this.isNavKeyPress() ||
(k == this.BACKSPACE) || // Backspace
(k >= 16 && k <= 20) || // Shift, Ctrl, Alt, Pause, Caps Lock
(k >= 44 && k <= 46); // Print Screen, Insert, Delete
},
/**
* Returns a point object that consists of the object coordinates.
* @return {Ext.util.Point} point
*/
getPoint : function(){
var xy = this.getXY();
return Ext.create('Ext.util.Point', xy[0], xy[1]);
},
/**
* Returns true if the control, meta, shift or alt key was pressed during this event.
* @return {Boolean}
*/
hasModifier : function(){
return this.ctrlKey || this.altKey || this.shiftKey || this.metaKey;
},
/**
* Injects a DOM event using the data in this object and (optionally) a new target.
* This is a low-level technique and not likely to be used by application code. The
* currently supported event types are:
* <p><b>HTMLEvents</b></p>
* <ul>
* <li>load</li>
* <li>unload</li>
* <li>select</li>
* <li>change</li>
* <li>submit</li>
* <li>reset</li>
* <li>resize</li>
* <li>scroll</li>
* </ul>
* <p><b>MouseEvents</b></p>
* <ul>
* <li>click</li>
* <li>dblclick</li>
* <li>mousedown</li>
* <li>mouseup</li>
* <li>mouseover</li>
* <li>mousemove</li>
* <li>mouseout</li>
* </ul>
* <p><b>UIEvents</b></p>
* <ul>
* <li>focusin</li>
* <li>focusout</li>
* <li>activate</li>
* <li>focus</li>
* <li>blur</li>
* </ul>
* @param {Ext.Element/HTMLElement} target (optional) If specified, the target for the event. This
* is likely to be used when relaying a DOM event. If not specified, {@link #getTarget}
* is used to determine the target.
*/
injectEvent: function () {
var API,
dispatchers = {}; // keyed by event type (e.g., 'mousedown')
// Good reference: http://developer.yahoo.com/yui/docs/UserAction.js.html
// IE9 has createEvent, but this code causes major problems with htmleditor (it
// blocks all mouse events and maybe more). TODO
if (!Ext.isIE && document.createEvent) { // if (DOM compliant)
API = {
createHtmlEvent: function (doc, type, bubbles, cancelable) {
var event = doc.createEvent('HTMLEvents');
event.initEvent(type, bubbles, cancelable);
return event;
},
createMouseEvent: function (doc, type, bubbles, cancelable, detail,
clientX, clientY, ctrlKey, altKey, shiftKey, metaKey,
button, relatedTarget) {
var event = doc.createEvent('MouseEvents'),
view = doc.defaultView || window;
if (event.initMouseEvent) {
event.initMouseEvent(type, bubbles, cancelable, view, detail,
clientX, clientY, clientX, clientY, ctrlKey, altKey,
shiftKey, metaKey, button, relatedTarget);
} else { // old Safari
event = doc.createEvent('UIEvents');
event.initEvent(type, bubbles, cancelable);
event.view = view;
event.detail = detail;
event.screenX = clientX;
event.screenY = clientY;
event.clientX = clientX;
event.clientY = clientY;
event.ctrlKey = ctrlKey;
event.altKey = altKey;
event.metaKey = metaKey;
event.shiftKey = shiftKey;
event.button = button;
event.relatedTarget = relatedTarget;
}
return event;
},
createUIEvent: function (doc, type, bubbles, cancelable, detail) {
var event = doc.createEvent('UIEvents'),
view = doc.defaultView || window;
event.initUIEvent(type, bubbles, cancelable, view, detail);
return event;
},
fireEvent: function (target, type, event) {
target.dispatchEvent(event);
},
fixTarget: function (target) {
// Safari3 doesn't have window.dispatchEvent()
if (target == window && !target.dispatchEvent) {
return document;
}
return target;
}
};
} else if (document.createEventObject) { // else if (IE)
var crazyIEButtons = { 0: 1, 1: 4, 2: 2 };
API = {
createHtmlEvent: function (doc, type, bubbles, cancelable) {
var event = doc.createEventObject();
event.bubbles = bubbles;
event.cancelable = cancelable;
return event;
},
createMouseEvent: function (doc, type, bubbles, cancelable, detail,
clientX, clientY, ctrlKey, altKey, shiftKey, metaKey,
button, relatedTarget) {
var event = doc.createEventObject();
event.bubbles = bubbles;
event.cancelable = cancelable;
event.detail = detail;
event.screenX = clientX;
event.screenY = clientY;
event.clientX = clientX;
event.clientY = clientY;
event.ctrlKey = ctrlKey;
event.altKey = altKey;
event.shiftKey = shiftKey;
event.metaKey = metaKey;
event.button = crazyIEButtons[button] || button;
event.relatedTarget = relatedTarget; // cannot assign to/fromElement
return event;
},
createUIEvent: function (doc, type, bubbles, cancelable, detail) {
var event = doc.createEventObject();
event.bubbles = bubbles;
event.cancelable = cancelable;
return event;
},
fireEvent: function (target, type, event) {
target.fireEvent('on' + type, event);
},
fixTarget: function (target) {
if (target == document) {
// IE6,IE7 thinks window==document and doesn't have window.fireEvent()
// IE6,IE7 cannot properly call document.fireEvent()
return document.documentElement;
}
return target;
}
};
}
//----------------
// HTMLEvents
Ext.Object.each({
load: [false, false],
unload: [false, false],
select: [true, false],
change: [true, false],
submit: [true, true],
reset: [true, false],
resize: [true, false],
scroll: [true, false]
},
function (name, value) {
var bubbles = value[0], cancelable = value[1];
dispatchers[name] = function (targetEl, srcEvent) {
var e = API.createHtmlEvent(name, bubbles, cancelable);
API.fireEvent(targetEl, name, e);
};
});
//----------------
// MouseEvents
function createMouseEventDispatcher (type, detail) {
var cancelable = (type != 'mousemove');
return function (targetEl, srcEvent) {
var xy = srcEvent.getXY(),
e = API.createMouseEvent(targetEl.ownerDocument, type, true, cancelable,
detail, xy[0], xy[1], srcEvent.ctrlKey, srcEvent.altKey,
srcEvent.shiftKey, srcEvent.metaKey, srcEvent.button,
srcEvent.relatedTarget);
API.fireEvent(targetEl, type, e);
};
}
Ext.each(['click', 'dblclick', 'mousedown', 'mouseup', 'mouseover', 'mousemove', 'mouseout'],
function (eventName) {
dispatchers[eventName] = createMouseEventDispatcher(eventName, 1);
});
//----------------
// UIEvents
Ext.Object.each({
focusin: [true, false],
focusout: [true, false],
activate: [true, true],
focus: [false, false],
blur: [false, false]
},
function (name, value) {
var bubbles = value[0], cancelable = value[1];
dispatchers[name] = function (targetEl, srcEvent) {
var e = API.createUIEvent(targetEl.ownerDocument, name, bubbles, cancelable, 1);
API.fireEvent(targetEl, name, e);
};
});
//---------
if (!API) {
// not even sure what ancient browsers fall into this category...
dispatchers = {}; // never mind all those we just built :P
API = {
fixTarget: function (t) {
return t;
}
};
}
function cannotInject (target, srcEvent) {
//<debug>
// TODO log something
//</debug>
}
return function (target) {
var me = this,
dispatcher = dispatchers[me.type] || cannotInject,
t = target ? (target.dom || target) : me.getTarget();
t = API.fixTarget(t);
dispatcher(t, me);
};
}() // call to produce method
}, function() {
Ext.EventObject = new Ext.EventObjectImpl();
});