Move.js revision 5e6e6582620a381e94bfe4390e94a30677c669ab
/**
* Adds lower level support for "gesturemovestart", "gesturemove" and "gesturemoveend" events, which can be used to create drag/drop
* interactions which work across touch and mouse input devices. They correspond to "touchstart", "touchmove" and "touchend" on a touch input
* device, and "mousedown", "mousemove", "mouseup" on a mouse based input device.
*
* @module event-gestures
* @submodule event-move
*/
start: "touchstart",
move: "touchmove",
end: "touchend"
} : {
start: "mousedown",
move: "mousemove",
end: "mouseup"
},
START = "start",
MOVE = "move",
END = "end",
_MOVE_START_HANDLE = "_msh",
_MOVE_HANDLE = "_mh",
_MOVE_END_HANDLE = "_meh",
_DEL_MOVE_START_HANDLE = "_dmsh",
_DEL_MOVE_HANDLE = "_dmh",
_DEL_MOVE_END_HANDLE = "_dmeh",
_MOVE_START = "_ms",
_MOVE = "_m",
MIN_TIME = "minTime",
MIN_DISTANCE = "minDistance",
PREVENT_DEFAULT = "preventDefault",
OWNER_DOCUMENT = "ownerDocument",
NODE_TYPE = "nodeType",
if (!(PREVENT_DEFAULT in config)) {
}
return config;
},
},
touchFacade.button = (params && params.button) || 1; // default to left (left as per vendors, not W3C which is 0)
},
/**
* Sets up a "gesturemovestart" event, that is fired on touch devices in response to a single finger "touchstart",
* and on mouse based devices in response to a "mousedown". The subscriber can specify the minimum time
* and distance thresholds which should be crossed before the "gesturemovestart" is fired and for the mouse,
* which button should initiate a "gesturemovestart". This event can also be listened for using node.delegate().
*
* @event gesturemovestart
* @for YUI
* @param type {string} "gesturemovestart"
* @param fn {function} The method the event invokes. It receives the event facade of the underlying DOM event (mousedown or touchstart.touches[0]) which contains position co-ordinates.
* @param cfg {Object} Optional. An object which specifies:
*
* <dl>
* <dt>minDistance (defaults to 0)</dt>
* <dd>The minimum distance threshold which should be crossed before the gesturemovestart is fired</dd>
* <dt>minTime (defaults to 0)</dt>
* <dd>The minimum time threshold for which the finger/mouse should be help down before the gesturemovestart is fired</dd>
* <dt>button (no default)</dt>
* <dd>In the case of a mouse input device, if the event should only be fired for a specific mouse button.</dd>
* <dt>preventDefault (defaults to false)</dt>
* <dd>Can be set to true/false to prevent default behavior as soon as the touchstart or mousedown is received (that is before minTime or minDistance thresholds are crossed, and so before the gesturemovestart listener is notified) so that things like text selection and context popups (on touch devices) can be
* prevented. This property can also be set to a function, which returns true or false, based on the event facade passed to it (for example, DragDrop can determine if the target is a valid handle or not before preventing default).</dd>
* </dl>
*
* @return {EventHandle} the detach handle
*/
this._onStart,
this,
node,
ce);
},
var se = this;
function(e) {
},
filter);
},
if (handle) {
subscriber[_DEL_MOVE_START_HANDLE] = null;
}
},
if (startHandle) {
subscriber[_MOVE_START_HANDLE] = null;
}
},
}
if (!(MIN_DISTANCE in params)) {
}
return params;
},
if (delegate) {
node = e.currentTarget;
}
fireStart = true,
if (e.touches) {
} else {
fireStart = false;
}
} else {
}
Y.log("gesturemovestart: params = button:" + button + ", minTime = " + minTime + ", minDistance = " + minDistance, "event-gestures");
if (fireStart) {
if (preventDefault) {
// preventDefault is a boolean or a function
e.preventDefault();
}
}
} else {
if (minTime > 0) {
}, this));
}
if (minDistance > 0) {
Y.log("gesturemovestart: minDistance specified. Setup native mouse/touchmove listener to measure distance.", "event-gestures");
if (Math.abs(em.pageX - startXY[0]) > minDistance || Math.abs(em.pageY - startXY[1]) > minDistance) {
}
}, this));
}
}
}
},
}
}
}
},
if (params) {
}
e.type = GESTURE_MOVE_START;
},
MIN_TIME : 0,
MIN_DISTANCE : 0,
PREVENT_DEFAULT : false
});
/**
* Sets up a "gesturemove" event, that is fired on touch devices in response to a single finger "touchmove",
* and on mouse based devices in response to a "mousemove".
*
* <p>By default this event is only fired when the same node
* has received a "gesturemovestart" event. The subscriber can set standAlone to true, in the configuration properties,
* if they want to listen for this event without an initial "gesturemovestart".</p>
*
* <p>By default this event sets up it's internal "touchmove" and "mousemove" DOM listeners on the document element. The subscriber
* can set the root configuration property, to specify which node to attach DOM listeners to, if different from the document.</p>
*
* <p>This event can also be listened for using node.delegate().</p>
*
* @event gesturemove
* @for YUI
* @param type {string} "gesturemove"
* @param fn {function} The method the event invokes. It receives the event facade of the underlying DOM event (mousemove or touchmove.touches[0]) which contains position co-ordinates.
* @param cfg {Object} Optional. An object which specifies:
* <dl>
* <dt>standAlone (defaults to false)</dt>
* <dd>true, if the subscriber should be notified even if a "gesturemovestart" has not occured on the same node.</dd>
* <dt>root (defaults to document)</dt>
* <dd>The node to which the internal DOM listeners should be attached.</dd>
* <dt>preventDefault (defaults to false)</dt>
* <dd>Can be set to true/false to prevent default behavior as soon as the touchmove or mousemove is received. As with gesturemovestart, can also be set to function which returns true/false based on the event facade passed to it.</dd>
* </dl>
*
* @return {EventHandle} the detach handle
*/
this._onMove,
this,
node,
ce);
},
var se = this;
function(e) {
},
filter);
},
if (moveHandle) {
moveHandle.detach();
subscriber[_MOVE_HANDLE] = null;
}
},
if (handle) {
subscriber[_DEL_MOVE_HANDLE] = null;
}
},
},
if (delegate) {
node = e.currentTarget;
}
if (fireMove) {
if (e.touches) {
} else {
fireMove = false;
}
}
if (fireMove) {
if (preventDefault) {
// preventDefault is a boolean or function
e.preventDefault();
}
}
e.type = GESTURE_MOVE;
}
}
},
PREVENT_DEFAULT : false
});
/**
* Sets up a "gesturemoveend" event, that is fired on touch devices in response to a single finger "touchend",
* and on mouse based devices in response to a "mouseup".
*
* <p>By default this event is only fired when the same node
* has received a "gesturemove" or "gesturemovestart" event. The subscriber can set standAlone to true, in the configuration properties,
* if they want to listen for this event without a preceding "gesturemovestart" or "gesturemove".</p>
*
* <p>By default this event sets up it's internal "touchend" and "mouseup" DOM listeners on the document element. The subscriber
* can set the root configuration property, to specify which node to attach DOM listeners to, if different from the document.</p>
*
* <p>This event can also be listened for using node.delegate().</p>
*
* @event gesturemoveend
* @for YUI
* @param type {string} "gesturemoveend"
* @param fn {function} The method the event invokes. It receives the event facade of the underlying DOM event (mouseup or touchend.changedTouches[0]).
* @param cfg {Object} Optional. An object which specifies:
* <dl>
* <dt>standAlone (defaults to false)</dt>
* <dd>true, if the subscriber should be notified even if a "gesturemovestart" or "gesturemove" has not occured on the same node.</dd>
* <dt>root (defaults to document)</dt>
* <dd>The node to which the internal DOM listeners should be attached.</dd>
* <dt>preventDefault (defaults to false)</dt>
* <dd>Can be set to true/false to prevent default behavior as soon as the touchend or mouseup is received. As with gesturemovestart, can also be set to function which returns true/false based on the event facade passed to it.</dd>
* </dl>
*
* @return {EventHandle} the detach handle
*/
this._onEnd,
this,
node,
ce);
},
var se = this;
function(e) {
},
filter);
},
if (handle) {
subscriber[_DEL_MOVE_END_HANDLE] = null;
}
},
if (endHandle) {
subscriber[_MOVE_END_HANDLE] = null;
}
},
},
if (delegate) {
node = e.currentTarget;
}
if (fireMoveEnd) {
if (e.changedTouches) {
} else {
fireMoveEnd = false;
}
}
if (fireMoveEnd) {
if (preventDefault) {
// preventDefault is a boolean or function
e.preventDefault();
}
}
e.type = GESTURE_MOVE_END;
}
}
},
PREVENT_DEFAULT : false
});