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splitter.js
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splitter.js
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/**
* RoundCube splitter GUI class
*
* @constructor
*/
function rcube_splitter(attrib)
{
this.p1id = attrib.p1;
this.p2id = attrib.p2;
this.id = attrib.id ? attrib.id : this.p1id + '_' + this.p2id + '_splitter';
this.orientation = attrib.orientation;
this.horizontal = (this.orientation == 'horizontal' || this.orientation == 'h');
this.offset = bw.ie6 ? 2 : 0;
this.pos = attrib.start ? attrib.start * 1 : 0;
this.relative = attrib.relative ? true : false;
this.drag_active = false;
this.init = function()
{
this.p1 = document.getElementById(this.p1id);
this.p2 = document.getElementById(this.p2id);
// create and position the handle for this splitter
this.p1pos = this.relative ? $(this.p1).position() : $(this.p1).offset();
this.p2pos = this.relative ? $(this.p2).position() : $(this.p2).offset();
if (this.horizontal) {
var top = this.p1pos.top + this.p1.offsetHeight;
this.layer = new rcube_layer(this.id, {x: 0, y: top, height: 10,
width: '100%', vis: 1, parent: this.p1.parentNode});
}
else {
var left = this.p1pos.left + this.p1.offsetWidth;
this.layer = new rcube_layer(this.id, {x: left, y: 0, width: 10,
height: '100%', vis: 1, parent: this.p1.parentNode});
}
this.elm = this.layer.elm;
this.elm.className = 'splitter '+(this.horizontal ? 'splitter-h' : 'splitter-v');
this.elm.unselectable = 'on';
// add the mouse event listeners
rcube_event.add_listener({element: this.elm, event:'mousedown', object:this, method:'onDragStart'});
if (bw.ie)
rcube_event.add_listener({element: window, event:'resize', object:this, method:'onResize'});
// read saved position from cookie
var cookie = bw.get_cookie(this.id);
if (cookie && !isNaN(cookie)) {
this.pos = parseFloat(cookie);
this.resize();
}
else if (this.pos) {
this.resize();
this.set_cookie();
}
};
/**
* Set size and position of all DOM objects
* according to the saved splitter position
*/
this.resize = function()
{
if (this.horizontal) {
var lh = this.layer.height - this.offset * 2;
this.p1.style.height = Math.floor(this.pos - this.p1pos.top - lh / 2) + 'px';
this.p2.style.top = Math.ceil(this.pos + lh / 2) + 'px';
this.layer.move(this.layer.x, Math.round(this.pos - lh / 2 + 1));
if (bw.ie) {
var new_height = parseInt(this.p2.parentNode.offsetHeight, 10) - parseInt(this.p2.style.top, 10) - (bw.ie8 ? 2 : 0);
this.p2.style.height = (new_height > 0 ? new_height : 0) + 'px';
}
}
else {
this.p1.style.width = Math.floor(this.pos - this.p1pos.left - this.layer.width / 2) + 'px';
this.p2.style.left = Math.ceil(this.pos + this.layer.width / 2) + 'px';
this.layer.move(Math.round(this.pos - this.layer.width / 2 + 1), this.layer.y);
if (bw.ie) {
var new_width = parseInt(this.p2.parentNode.offsetWidth, 10) - parseInt(this.p2.style.left, 10) ;
this.p2.style.width = (new_width > 0 ? new_width : 0) + 'px';
}
}
};
/**
* Handler for mousedown events
*/
this.onDragStart = function(e)
{
// disable text selection while dragging the splitter
if (window.webkit || bw.safari)
document.body.style.webkitUserSelect = 'none';
this.p1pos = this.relative ? $(this.p1).position() : $(this.p1).offset();
this.p2pos = this.relative ? $(this.p2).position() : $(this.p2).offset();
this.drag_active = true;
// start listening to mousemove events
rcube_event.add_listener({element:document, event:'mousemove', object:this, method:'onDrag'});
rcube_event.add_listener({element:document, event:'mouseup', object:this, method:'onDragStop'});
// enable dragging above iframes
$('iframe').each(function() {
$('<div class="iframe-splitter-fix"></div>')
.css({background: '#fff',
width: this.offsetWidth+'px', height: this.offsetHeight+'px',
position: 'absolute', opacity: '0.001', zIndex: 1000
})
.css($(this).offset())
.appendTo('body');
});
};
/**
* Handler for mousemove events
*/
this.onDrag = function(e)
{
if (!this.drag_active)
return false;
var pos = rcube_event.get_mouse_pos(e);
if (this.relative) {
var parent = $(this.p1.parentNode).offset();
pos.x -= parent.left;
pos.y -= parent.top;
}
if (this.horizontal) {
if (((pos.y - this.layer.height * 1.5) > this.p1pos.top) && ((pos.y + this.layer.height * 1.5) < (this.p2pos.top + this.p2.offsetHeight))) {
this.pos = pos.y;
this.resize();
}
}
else {
if (((pos.x - this.layer.width * 1.5) > this.p1pos.left) && ((pos.x + this.layer.width * 1.5) < (this.p2pos.left + this.p2.offsetWidth))) {
this.pos = pos.x;
this.resize();
}
}
this.p1pos = this.relative ? $(this.p1).position() : $(this.p1).offset();
this.p2pos = this.relative ? $(this.p2).position() : $(this.p2).offset();
return false;
};
/**
* Handler for mouseup events
*/
this.onDragStop = function(e)
{
// resume the ability to highlight text
if (window.webkit || bw.safari)
document.body.style.webkitUserSelect = 'auto';
// cancel the listening for drag events
rcube_event.remove_listener({element:document, event:'mousemove', object:this, method:'onDrag'});
rcube_event.remove_listener({element:document, event:'mouseup', object:this, method:'onDragStop'});
this.drag_active = false;
// remove temp divs
$('div.iframe-splitter-fix').each(function() { this.parentNode.removeChild(this); });
this.set_cookie();
return bw.safari ? true : rcube_event.cancel(e);
};
/**
* Handler for window resize events
*/
this.onResize = function(e)
{
if (this.horizontal) {
var new_height = parseInt(this.p2.parentNode.offsetHeight, 10) - parseInt(this.p2.style.top, 10) - (bw.ie8 ? 2 : 0);
this.p2.style.height = (new_height > 0 ? new_height : 0) +'px';
}
else {
var new_width = parseInt(this.p2.parentNode.offsetWidth, 10) - parseInt(this.p2.style.left, 10);
this.p2.style.width = (new_width > 0 ? new_width : 0) + 'px';
}
};
/**
* Saves splitter position in cookie
*/
this.set_cookie = function()
{
var exp = new Date();
exp.setYear(exp.getFullYear() + 1);
bw.set_cookie(this.id, this.pos, exp);
};
} // end class rcube_splitter

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