477 lines
17 KiB
JavaScript
477 lines
17 KiB
JavaScript
// vim: et:ts=4:sw=4:sts=4:ft=javascript
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'use strict';
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/*@
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Ox.Element <function:Ox.JQueryElement> Basic UI element object
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# Usage --------------------------------------------------------------------
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(element) -> <object> UI element
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(options) -> <object> UI element
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(options, self) -> <object> UI element
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# Arguments ----------------------------------------------------------------
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element <string> Tagname or CSS selector
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options <object> Options of the element
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# Properties
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element <string> Tagname or CSS selector
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tooltip <string|function> Tooltip title, or a function that returns one
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(e) -> <string> tooltip title
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e <object> mouse event
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self <object> Shared private variable
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# Events -------------------------------------------------------------------
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anyclick <event> anyclick
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Fires on mouseup, but not on any subsequent mouseup within 250 ms (this
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is useful if one wants to listen for singleclicks, but not doubleclicks,
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since it will fire immediately, and won't fire again in case of a
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doubleclick)
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* <*> original event properties
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doubleclick <event> doubleclick
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Fires on the second mousedown within 250 ms (this is useful if one wants
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to listen for both singleclicks and doubleclicks, since it will not
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trigger a singleclick event)
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* <*> original event properties
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drag <event> drag
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Fires on mousemove after dragstart, stops firing on mouseup
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clientDX <number> horizontal drag delta in px
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clientDY <number> vertical drag delta in px
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* <*> original event properties
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dragend <event> dragpause
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Fires on mouseup after dragstart
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clientDX <number> horizontal drag delta in px
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clientDY <number> vertical drag delta in px
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* <*> original event properties
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dragenter <event> dragenter
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Fires when entering an element during drag (this fires on the element
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being dragged -- the target element is the event's target property)
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clientDX <number> horizontal drag delta in px
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clientDY <number> vertical drag delta in px
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* <*> original event properties
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dragleave <event> dragleave
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Fires when leaving an element during drag (this fires on the element
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being dragged -- the target element is the event's target property)
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clientDX <number> horizontal drag delta in px
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clientDY <number> vertical drag delta in px
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* <*> original event properties
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dragpause <event> dragpause
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Fires once when the mouse doesn't move for 250 ms during drag (this is
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useful in order to execute operations that are too expensive to be
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attached to the drag event)
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clientDX <number> horizontal drag delta in px
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clientDY <number> vertical drag delta in px
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* <*> original event properties
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mousedown <event> mousedown
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Fires on mousedown (this is useful if one wants to listen for
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singleclicks, but not doubleclicks or drag events, and wants the event
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to fire as early as possible)
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* <*> original event properties
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dragstart <event> dragstart
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Fires when the mouse is down for 250 ms
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* <*> original event properties
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mouserepeat <event> mouserepeat
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Fires every 50 ms after the mouse was down for 250 ms, stops firing on
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mouseleave or mouseup (this fires like a key that is being pressed and
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held, and is useful for buttons like scrollbars arrows that need to
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react to both clicking and holding)
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singleclick <event> singleclick
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Fires 250 ms after mouseup, if there was no subsequent mousedown (this
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is useful if one wants to listen for both singleclicks and doubleclicks,
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since it will not fire for doubleclicks)
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* <*> original event properties
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@*/
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Ox.Element = function(options, self) {
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// create private object
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self = self || {};
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// create defaults and options objects
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self.defaults = {};
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self.options = options || {};
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// allow for Ox.TestElement('<tagname>')
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// or Ox.TestElement('cssSelector')
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if (Ox.isString(self.options)) {
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self.options = {
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element: self.options
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};
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}
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// create event handler
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// (this can be passed as part of self)
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if (!self.$eventHandler) {
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self.$eventHandler = $('<div>');
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}
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// create public object
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var that = new Ox.JQueryElement(
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$(self.options.element || '<div>')
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)
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.addClass('OxElement')
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.mousedown(mousedown);
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setTooltip();
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function bind(action, event, callback) {
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self.$eventHandler[action]('ox_' + event, function(event, data) {
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callback.call(that, Ox.extend({
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_element: that.$element,
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_event: event
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}, data));
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});
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}
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function mousedown(e) {
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/*
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better mouse events
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mousedown:
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trigger mousedown
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within 250 msec:
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mouseup: trigger anyclick
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mouseup + mousedown: trigger doubleclick
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after 250 msec:
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mouseup + no mousedown within 250 msec: trigger singleclick
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no mouseup within 250 msec:
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trigger mouserepeat every 50 msec
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trigger dragstart
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mousemove: trigger drag
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no mousemove for 250 msec:
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trigger dragpause
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mouseup: trigger dragend
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"anyclick" is not called "click" since this would collide with the click
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events of some widgets
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*/
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var clientX, clientY,
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dragTimeout = 0,
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mouseInterval = 0;
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if (!self._mouseTimeout) {
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// first mousedown
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that.triggerEvent('mousedown', e);
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self._drag = false;
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self._mouseup = false;
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self._mouseTimeout = setTimeout(function() {
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// 250 ms later, no subsequent click
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self._mouseTimeout = 0;
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if (self._mouseup) {
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// mouse went up, trigger singleclick
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that.triggerEvent('singleclick', e);
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} else {
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// mouse is still down, trigger mouserepeat
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// every 50 ms until mouseleave or mouseup
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mouserepeat();
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mouseInterval = setInterval(mouserepeat, 50);
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that.one('mouseleave', function() {
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clearInterval(mouseInterval);
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});
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// trigger dragstart, set up drag events
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that.triggerEvent('dragstart', e);
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$('*').bind({
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mouseenter: dragenter,
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mouseleave: dragleave
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});
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clientX = e.clientX;
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clientY = e.clientY;
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Ox.UI.$window
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.unbind('mouseup', mouseup)
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.mousemove(mousemove)
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.one('mouseup', function(e) {
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// stop checking for mouserepeat
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clearInterval(mouseInterval);
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// stop checking for dragpause
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clearTimeout(dragTimeout);
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// stop checking for drag
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Ox.UI.$window.unbind('mousemove', mousemove);
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// stop checking for dragenter and dragleave
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$('*').unbind({
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mouseenter: dragenter,
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mouseleave: dragleave
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});
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// trigger dragend
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that.triggerEvent('dragend', extend(e));
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});
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self._drag = true;
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}
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}, 250);
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} else {
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// second mousedown within 250 ms, trigger doubleclick
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clearTimeout(self._mouseTimeout);
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self._mouseTimeout = 0;
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that.triggerEvent('doubleclick', e);
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}
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Ox.UI.$window.one('mouseup', mouseup);
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function dragenter(e) {
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that.triggerEvent('dragenter', extend(e));
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}
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function dragleave(e) {
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that.triggerEvent('dragleave', extend(e));
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}
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function extend(e) {
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return Ox.extend({
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clientDX: e.clientX - clientX,
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clientDY: e.clientY - clientY
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}, e);
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}
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function mousemove(e) {
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e = extend(e);
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clearTimeout(dragTimeout);
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dragTimeout = setTimeout(function() {
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// mouse did not move for 250 ms, trigger dragpause
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that.triggerEvent('dragpause', e);
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}, 250);
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that.triggerEvent('drag', e);
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}
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function mouserepeat(e) {
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that.triggerEvent('mouserepeat', e);
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}
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function mouseup(e) {
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if (!self._mouseup && !self._drag) {
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// mouse went up for the first time, trigger anyclick
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that.triggerEvent('anyclick', e);
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self._mouseup = true;
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}
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}
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}
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function mouseenter(e) {
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that.$tooltip.show(e);
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}
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function mouseleave(e) {
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that.$tooltip.hide();
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}
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function mousemove(e) {
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//Ox.Log('Core', 'mousemove!!')
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that.$tooltip.options({
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title: self.options.tooltip(e)
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}).show(e);
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}
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// FIXME: in other widgets, use this,
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// rather than some self.$tooltip that
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// will not get garbage collected
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function setTooltip() {
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if (self.options.tooltip) {
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if (Ox.isString(self.options.tooltip)) {
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that.$tooltip = Ox.Tooltip({
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title: self.options.tooltip,
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});
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that.bind({
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mouseenter: mouseenter
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}).unbind({
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mousemove: mousemove
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});
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} else {
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that.$tooltip = Ox.Tooltip({
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animate: false
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});
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that.bind({
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mousemove: mousemove
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}).unbind({
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mouseenter: mouseenter
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});
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}
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that.bind({
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mouseleave: mouseleave
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});
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} else {
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if (that.$tooltip) {
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that.$tooltip.remove();
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that.unbind({
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mouseenter: mouseenter,
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mousemove: mousemove,
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mouseleave: mouseleave
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});
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}
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}
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}
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self.setOption = function(key, value) {
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// self.setOption(key, value)
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// is called when an option changes
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// (to be implemented by widget)
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if (key == 'tooltip') {
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setTooltip();
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}
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};
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/*@
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bindEvent <function> Binds a function to an event
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(event, callback) -> <o> This element
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({event: callback, ...}) -> <o> This element
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callback <f> Callback function
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data <o> event data (key/value pairs)
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event <s> Event name
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Event names can be namespaced, like <code>'click.foo'</code>
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@*/
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that.bindEvent = function() {
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Ox.forEach(Ox.makeObject(arguments), function(callback, event) {
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bind('bind', event, callback);
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});
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return that;
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}
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/*@
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bindEventOnce <function> Binds a function to an event, once
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(event, callback) -> <obj> This element object
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({event: callback, ...}) -> <obj> This element object
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callback <f> Callback function
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data <o> event data (key/value pairs)
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event <s> Event name
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Event names can be namespaced, like <code>'click.foo'</code>
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@*/
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that.bindEventOnce = function() {
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Ox.forEach(Ox.makeObject(arguments), function(callback, event) {
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bind('one', event, callback);
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});
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return that;
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};
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that.bindKeyboard = function() {
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Ox.Keyboard.bind(that.id);
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return that;
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};
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/*@
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defaults <function> Sets the default options for an element object
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({key: value, ...}) -> <obj> This element object
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key <str> The name of the default option
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value <val> The value of the default option
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@*/
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that.defaults = function(defaults) {
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// sets the default options
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self.defaults = defaults;
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self.options = defaults;
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return that;
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};
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/*@
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gainFocus <function> Makes an element object gain focus
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() -> <obj> This element object
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@*/
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that.gainFocus = function() {
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Ox.Focus.focus(that.id);
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return that;
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};
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/*@
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hasFocus <function> Returns true if an element object has focus
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() -> <boolean> True if the element has focus
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@*/
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that.hasFocus = function() {
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return Ox.Focus.focused() == that.id;
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};
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/*@
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loseFocus <function> Makes an element object lose focus
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() -> <object> This element object
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@*/
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that.loseFocus = function() {
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Ox.Focus.blur(that.id);
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return that;
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};
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/*@
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options <function> Gets or sets the options of an element object
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# Usage
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() -> <obj> all options
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(key) -> <any> the value of option[key]
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(key, value) -> <obj> this element
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Sets options[key] to value and calls self.setOption(key, value)
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if the key/value pair was added or modified
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({key: value, ...}) -> <obj> this element
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Sets multiple options and calls self.setOption(key, value)
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for every key/value pair that was added or modified
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# Arguments
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key <str> the name of the option
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value <val> the value of the option
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@*/
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that.options = function() {
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return Ox.getset(self.options, arguments, self.setOption, that);
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};
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that.setElement = function($element) {
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//$element[0].className = that.$element[0].className;
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$element.addClass('OxElement').data({oxid: that.id});
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that.$element.replaceWith($element);
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that.$element = $element;
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that[0] = that.$element[0];
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};
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/*@
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removeElement <function> Removes an element object and its event handler
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() -> <obj> This element
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@*/
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that.remove = function(remove) {
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remove !== false && that.$element.find('.OxElement').each(function() {
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var oxid = $(this).data('oxid'),
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element = Ox.UI.elements[oxid];
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element && element.remove(false);
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});
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Ox.Focus.remove(that.id);
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Ox.Keyboard.unbind(that.id);
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delete self.$eventHandler;
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delete Ox.UI.elements[that.id];
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that.$tooltip && that.$tooltip.remove();
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remove !== false && that.$element.remove();
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return that;
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};
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/*@
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triggerEvent <function> Triggers an event
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(event) -> <object> This element object
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(event, data) -> <object> This element object
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({event: data, ...}) -> <object> This element object
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event <string> Event name
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data <object> Event data (key/value pairs)
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@*/
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that.triggerEvent = function() {
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Ox.forEach(Ox.makeObject(arguments), function(data, event) {
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if ([
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'mousedown', 'mouserepeat', 'anyclick', 'singleclick', 'doubleclick',
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'dragstart', 'drag', 'dragenter', 'dragleave', 'dragpause', 'dragend',
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'draganddropstart', 'draganddrop', 'draganddropenter', 'draganddropleave', 'draganddropend',
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'playing', 'position', 'progress'
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].indexOf(event) == -1) {
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if (!/^pandora_/.test(event)) {
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Ox.Log('EVENT', that.id, self.options.id, 'trigger', event, data);
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}
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}
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// it is necessary to check if self.$eventHandler exists,
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// since, for example, when removing the element on click,
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// singleclick will fire after the removal of the event handler
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self.$eventHandler && self.$eventHandler.trigger('ox_' + event, data);
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});
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return that;
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};
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/*@
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unbindEvent <function> Unbinds all callbacks from an event
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To unbind a specific handler, use namespaced events, like
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<code>bindEvent('click.foo', callback)</code>, and then
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<code>unbindEvent('click.foo')</code>.
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() -> <object> This element object
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Unbinds all events
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(event) -> <object> This element object
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Unbinds one event
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(event, event, ...) -> <object> This element object
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Unbinds multiple events
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([event, event, ...]) -> <object> This element object
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Unbinds multiple events
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event <string> Event name
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@*/
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that.unbindEvent = function() {
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if (arguments.length == 0) {
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self.$eventHandler.unbind();
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} else {
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Ox.makeArray(arguments).forEach(function(event) {
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self.$eventHandler.unbind('ox_' + event);
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});
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}
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return that;
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};
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that.unbindKeyboard = function() {
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Ox.Keyboard.unbind(that.id);
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return that;
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};
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return that;
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};
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