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splitter.js
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splitter.js
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/**
* Roundcube splitter GUI class
*
* @licstart The following is the entire license notice for the
* JavaScript code in this file.
*
* Copyright (c) The Roundcube Dev Team
*
* The JavaScript code in this page is free software: you can redistribute it
* and/or modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* @licend The above is the entire license notice
* for the JavaScript code in this file.
*
* @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.pos = attrib.start ? attrib.start * 1 : 0;
this.relative = attrib.relative ? true : false;
this.drag_active = false;
this.callback = attrib.callback;
var me = this;
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
$(this.elm).mousedown(onDragStart);
// Update splitter position and elements with on window resize
$(window).resize(function(e) { if (e.target === window) me.resize(); });
if (bw.ie)
$(window).resize(onResize);
// read saved position from cookie
var cookie = rcmail.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.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);
this.p2.style.height = (new_height > 0 ? new_height : 0) + 'px';
}
}
else {
var max_width = $(window).width() - $(this.p1).offset().left - 150,
pos = Math.min(this.pos, max_width);
this.p1.style.width = Math.floor(pos - this.p1pos.left - this.layer.width / 2) + 'px';
this.p2.style.left = Math.ceil(pos + this.layer.width / 2) + 'px';
this.layer.move(Math.round(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';
}
}
$(this.p2).resize();
$(this.p1).resize();
};
/**
* Handler for mousedown events
*/
function onDragStart(e)
{
me.drag_active = true;
// disable text selection while dragging the splitter
if (bw.konq || bw.chrome || bw.safari)
document.body.style.webkitUserSelect = 'none';
me.p1pos = me.relative ? $(me.p1).position() : $(me.p1).offset();
me.p2pos = me.relative ? $(me.p2).position() : $(me.p2).offset();
// start listening to mousemove events
$(document).on('mousemove.' + me.id, onDrag).on('mouseup.' + me.id, 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
*/
function onDrag(e)
{
if (!me.drag_active)
return false;
// with timing events dragging action is more responsive
window.clearTimeout(me.ts);
me.ts = window.setTimeout(function() { onDragAction(e); }, 1);
return false;
};
function onDragAction(e)
{
var pos = rcube_event.get_mouse_pos(e);
if (me.relative) {
var parent = $(me.p1.parentNode).offset();
pos.x -= parent.left;
pos.y -= parent.top;
}
if (me.horizontal) {
if (((pos.y - me.layer.height * 1.5) > me.p1pos.top) && ((pos.y + me.layer.height * 1.5) < (me.p2pos.top + me.p2.offsetHeight))) {
me.pos = pos.y;
me.resize();
}
}
else if (((pos.x - me.layer.width * 1.5) > me.p1pos.left) && ((pos.x + me.layer.width * 1.5) < (me.p2pos.left + me.p2.offsetWidth))) {
me.pos = pos.x;
me.resize();
}
me.p1pos = me.relative ? $(me.p1).position() : $(me.p1).offset();
me.p2pos = me.relative ? $(me.p2).position() : $(me.p2).offset();
};
/**
* Handler for mouseup events
*/
function onDragStop(e)
{
me.drag_active = false;
// resume the ability to highlight text
if (bw.konq || bw.chrome || bw.safari)
document.body.style.webkitUserSelect = 'auto';
// cancel the listening for drag events
$(document).off('.' + me.id);
// remove temp divs
$('div.iframe-splitter-fix').remove();
me.set_cookie();
if (typeof me.callback == 'function')
me.callback(me);
return bw.safari ? true : rcube_event.cancel(e);
};
/**
* Handler for window resize events
*/
function onResize(e)
{
if (me.horizontal) {
var new_height = parseInt(me.p2.parentNode.offsetHeight, 10) - parseInt(me.p2.style.top, 10);
me.p2.style.height = (new_height > 0 ? new_height : 0) +'px';
}
else {
var new_width = parseInt(me.p2.parentNode.offsetWidth, 10) - parseInt(me.p2.style.left, 10);
me.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);
rcmail.set_cookie(this.id, this.pos, exp);
};
} // end class rcube_splitter

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