oxjs/source/Ox.UI/js/Core/Ox.Element.js
2011-04-30 00:07:23 +02:00

299 lines
9.9 KiB
JavaScript

// vim: et:ts=4:sw=4:sts=4:ft=js
// check out http://ejohn.org/apps/learn/#36 (-#38, making fns work w/o new)
Ox.Element = function() {
/***
Basic element object
***/
/*
tooltip option can be any of the following:
string
function(e), returns string
{mousemove: true, title: function(e)}
*/
return function(options, self) {
/*
// allow for 'Ox.Element()' instead of 'new Ox.Element()'
if (!(this instanceof arguments.callee)) {
return new arguments.callee(options, self);
}
*/
// create private object
self = self || {};
// create defaults and options objects
self.defaults = {};
self.options = options || {};
// allow for Ox.TestElement('<tagname>')
// or Ox.TestElement('cssSelector')
if (Ox.isString(self.options)) {
self.options = {
element: self.options
}
};
// create event handler
if (!self.$eventHandler) {
self.$eventHandler = $('<div>');
}
// create public object
var that = new Ox.JQueryElement(
$(self.options.element || '<div>')
)
.mousedown(mousedown);
/*
self.options.tooltip && that.bind(Ox.extend({
mouseenter: mouseenter,
mouseleave: mouseleave
}, self.options.tooltip.mousemove ? {
mousemove: mousemove
} : {}));
*/
function bind(action, event, fn) {
self.$eventHandler[action]('ox_' + event, function(event, data) {
// fixme: remove second parameter
fn(Ox.extend({_event: event}, data), data);
});
}
function mousedown(e) {
/*
better mouse events
mousedown:
trigger mousedown
within 250 msec:
mouseup: trigger anyclick ("click" would collide with click events of certain widgets)
mouseup + mousedown: trigger doubleclick
after 250 msec:
mouseup + no mousedown within 250 msec: trigger singleclick
no mouseup within 250 msec:
trigger mouserepeat every 50 msec
trigger dragstart
mousemove: trigger drag
no mousemove within 250 msec:
trigger dragpause
mouseup: trigger dragend
*/
var clientX, clientY,
dragTimeout = 0,
mouseInterval = 0;
if (!self.mouseTimeout) {
// first mousedown
that.triggerEvent('mousedown', e);
self.mouseup = false;
self.mouseTimeout = setTimeout(function() {
self.mouseTimeout = 0;
if (self.mouseup) {
// singleclick
that.triggerEvent('singleclick', e);
} else {
// mouserepeat, drag
clientX = e.clientX;
clientY = e.clientY;
that.triggerEvent('dragstart', e);
mouserepeat();
mouseInterval = setInterval(mouserepeat, 50);
Ox.UI.$window.unbind('mouseup', mouseup)
.mousemove(mousemove)
.one('mouseup', function(e) {
clearInterval(mouseInterval);
clearTimeout(dragTimeout);
Ox.UI.$window.unbind('mousemove', mousemove);
that.triggerEvent('dragend', extend(e));
});
that.one('mouseleave', function() {
clearInterval(mouseInterval);
});
}
}, 250);
} else {
// second mousedown
clearTimeout(self.mouseTimeout);
self.mouseTimeout = 0;
that.triggerEvent('doubleclick', e);
}
Ox.UI.$window.one('mouseup', mouseup);
function extend(e) {
return Ox.extend({
clientDX: e.clientX - clientX,
clientDY: e.clientY - clientY
}, e);
}
function mousemove(e) {
e = extend(e);
clearTimeout(dragTimeout);
dragTimeout = setTimeout(function() {
that.triggerEvent('dragpause', e);
}, 250);
that.triggerEvent('drag', e);
}
function mouserepeat() {
that.triggerEvent('mouserepeat');
}
function mouseup(e) {
// only trigger on firse mouseup
if (!self.mouseup) {
that.triggerEvent('anyclick', e);
self.mouseup = true;
}
}
}
/*
function mouseenter(e) {
self.$tooltip = new Ox.Tooltip({
title: Ox.isString(self.options.tooltip) ?
self.options.tooltip : Ox.isFunction(self.options.tooltip) ?
self.options.tooltip(e) : self.options.tooltip.title(e)
}).show();
}
function mouseleave(e) {
self.$tooltip.hide();
}
function mousemove(e) {
self.$tooltip.options({
title: self.options.tooltip.title(e)
});
}
*/
self.setOption = function() {
// self.setOptions(key, value)
// is called when an option changes
// (to be implemented by widget)
};
that._self = self; // fixme: remove
that.bindEvent = function() {
/***
binds a function to an event triggered by this object
Usage
bindEvent(event, fn)
bindEvent({eventA: fnA, eventB: fnB, ...})
***/
Ox.forEach(Ox.makeObject(arguments), function(fn, event) {
bind('bind', event, fn);
});
return that;
}
that.bindEventOnce = function() {
Ox.forEach(Ox.makeObject(arguments), function(fn, event) {
bind('one', event, fn);
});
return that;
};
that.defaults = function(defaults) {
// sets the default options
self.defaults = defaults;
self.options = defaults;
return that;
};
that.gainFocus = function() {
/***
make this object gain focus
***/
Ox.Focus.focus(that.id);
return that;
};
that.hasFocus = function() {
/***
returns true if this object has focus
***/
return Ox.Focus.focused() == that.id;
};
that.loseFocus = function() {
/***
make this object lose focus
***/
Ox.Focus.blur(that.id);
return that;
};
that.options = function() {
/*
that.options()
returns self.options
that.options(key)
returns self.options.key
that.options(key, val)
sets self.options.key to val, calls self.setOption(key, val)
if the key has been added or its val has changed, returns that
that.options({keyA: valA, keyB: valB})
sets self.options.keyA to valA and self.options.keyB to valB,
calls self.setOptions(key, val) for every key/value pair
that has been added or modified, returns that
*/
return Ox.getset(self.options, arguments, self.setOption, that);
};
that.removeElement = function() {
/***
remove this element, including its event handler
***/
that.loseFocus();
delete self.$eventHandler;
that.remove();
delete Ox.UI.elements[that.id];
return that;
};
that.triggerEvent = function() {
/***
triggers an event
Usage
triggerEvent(event)
triggerEvent(event, data)
triggerEvent({eventA: dataA, eventB: dataB, ...})
***/
Ox.forEach(Ox.makeObject(arguments), function(data, event) {
if ([
'mousedown', 'mouserepeat', 'anyclick', 'singleclick', 'doubleclick',
'dragstart', 'drag', 'dragpause', 'dragend', 'playing'
].indexOf(event) == -1) {
Ox.print(that.id, self.options.id, 'trigger', event, data);
}
self.$eventHandler.trigger('ox_' + event, data);
});
return that;
};
that.unbindEvent = function() {
/***
unbinds an event triggered by this element
Usage
unbindEvent() // unbinds all events
unbindEvent(event)
unbindEvent(eventA, eventB, ...)
unbindEvent([eventA, eventB, ...])
to unbind a specific handler, use namespaced events
bind('doubleclick.x', fn) ... unbind('doubleclick.x')
***/
if (arguments.length == 0) {
self.$eventHandler.unbind();
} else {
Ox.makeArray(arguments).forEach(function(event) {
self.$eventHandler.unbind('ox_' + event);
});
}
return that;
};
return that;
}
}();