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248 lines
8.0 KiB
JavaScript
248 lines
8.0 KiB
JavaScript
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/**
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* RoundCube splitter GUI class
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*
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* @constructor
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*/
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function rcube_splitter(attrib)
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{
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this.p1id = attrib.p1;
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this.p2id = attrib.p2;
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this.id = attrib.id ? attrib.id : this.p1id + '_' + this.p2id + '_splitter';
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this.orientation = attrib.orientation;
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this.horizontal = (this.orientation == 'horizontal' || this.orientation == 'h');
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this.offset = bw.ie6 ? 2 : 0;
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this.pos = attrib.start ? attrib.start * 1 : 0;
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this.relative = attrib.relative ? true : false;
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this.drag_active = false;
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this.init = function()
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{
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this.p1 = document.getElementById(this.p1id);
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this.p2 = document.getElementById(this.p2id);
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// create and position the handle for this splitter
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this.p1pos = this.relative ? $(this.p1).position() : $(this.p1).offset();
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this.p2pos = this.relative ? $(this.p2).position() : $(this.p2).offset();
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if (this.horizontal)
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{
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var top = this.p1pos.top + this.p1.offsetHeight;
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this.layer = new rcube_layer(this.id, {x: 0, y: top, height: 10,
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width: '100%', vis: 1, parent: this.p1.parentNode});
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}
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else
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{
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var left = this.p1pos.left + this.p1.offsetWidth;
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this.layer = new rcube_layer(this.id, {x: left, y: 0, width: 10,
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height: '100%', vis: 1, parent: this.p1.parentNode});
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}
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this.elm = this.layer.elm;
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this.elm.className = 'splitter '+(this.horizontal ? 'splitter-h' : 'splitter-v');
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this.elm.unselectable = 'on';
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// add the mouse event listeners
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rcube_event.add_listener({element: this.elm, event:'mousedown', object:this, method:'onDragStart'});
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if (bw.ie)
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rcube_event.add_listener({element: window, event:'resize', object:this, method:'onResize'});
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// read saved position from cookie
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var cookie = bw.get_cookie(this.id);
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if (cookie && !isNaN(cookie))
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{
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this.pos = parseFloat(cookie);
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this.resize();
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}
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else if (this.pos)
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{
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this.resize();
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this.set_cookie();
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}
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};
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/**
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* Set size and position of all DOM objects
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* according to the saved splitter position
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*/
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this.resize = function()
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{
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if (this.horizontal)
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{
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var lh = this.layer.height - this.offset * 2;
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this.p1.style.height = Math.floor(this.pos - this.p1pos.top - lh / 2) + 'px';
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this.p2.style.top = Math.ceil(this.pos + lh / 2) + 'px';
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this.layer.move(this.layer.x, Math.round(this.pos - lh / 2 + 1));
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if (bw.ie)
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{
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var new_height = parseInt(this.p2.parentNode.offsetHeight, 10) - parseInt(this.p2.style.top, 10) - (bw.ie8 ? 2 : 0);
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this.p2.style.height = (new_height > 0 ? new_height : 0) +'px';
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}
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}
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else
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{
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this.p1.style.width = Math.floor(this.pos - this.p1pos.left - this.layer.width / 2) + 'px';
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this.p2.style.left = Math.ceil(this.pos + this.layer.width / 2) + 'px';
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this.layer.move(Math.round(this.pos - this.layer.width / 2 + 1), this.layer.y);
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if (bw.ie)
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this.p2.style.width = parseInt(this.p2.parentNode.offsetWidth, 10) - parseInt(this.p2.style.left, 10) + 'px';
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}
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};
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/**
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* Handler for mousedown events
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*/
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this.onDragStart = function(e)
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{
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// disable text selection while dragging the splitter
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if (window.webkit || bw.safari)
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document.body.style.webkitUserSelect = 'none';
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this.p1pos = this.relative ? $(this.p1).position() : $(this.p1).offset();
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this.p2pos = this.relative ? $(this.p2).position() : $(this.p2).offset();
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this.drag_active = true;
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// start listening to mousemove events
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rcube_event.add_listener({element:document, event:'mousemove', object:this, method:'onDrag'});
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rcube_event.add_listener({element:document, event:'mouseup', object:this, method:'onDragStop'});
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// need to listen in any iframe documents too, b/c otherwise the splitter stops moving when we move over an iframe
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var iframes = document.getElementsByTagName('iframe');
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this.iframe_events = Object();
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for (var n in iframes)
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{
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var iframedoc = null;
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if (iframes[n].contentDocument)
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iframedoc = iframes[n].contentDocument;
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else if (iframes[n].contentWindow)
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iframedoc = iframes[n].contentWindow.document;
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else if (iframes[n].document)
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iframedoc = iframes[n].document;
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if (iframedoc)
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{
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// I don't use the add_listener function for this one because I need to create closures to fetch
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// the position of each iframe when the event is received
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var s = this;
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var id = '#'+iframes[n].id;
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this.iframe_events[n] = function(e){ e._offset = $(id).offset(); return s.onDrag(e); };
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if (iframedoc.addEventListener)
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iframedoc.addEventListener('mousemove', this.iframe_events[n], false);
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else if (iframes[n].attachEvent)
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iframedoc.attachEvent('onmousemove', this.iframe_events[n]);
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else
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iframedoc.onmousemove = this.iframe_events[n];
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rcube_event.add_listener({element:iframedoc, event:'mouseup', object:this, method:'onDragStop'});
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}
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}
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}
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/**
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* Handler for mousemove events
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*/
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this.onDrag = function(e)
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{
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if (!this.drag_active) return false;
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var pos = rcube_event.get_mouse_pos(e);
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if (this.relative)
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{
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var parent = $(this.p1.parentNode).offset();
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pos.x -= parent.left;
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pos.y -= parent.top;
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}
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if (this.horizontal)
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{
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if (((pos.y - this.layer.height * 1.5) > this.p1pos.top) && ((pos.y + this.layer.height * 1.5) < (this.p2pos.top + this.p2.offsetHeight)))
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{
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this.pos = pos.y;
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this.resize();
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}
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}
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else
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{
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if (((pos.x - this.layer.width * 1.5) > this.p1pos.left) && ((pos.x + this.layer.width * 1.5) < (this.p2pos.left + this.p2.offsetWidth)))
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{
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this.pos = pos.x;
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this.resize();
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}
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}
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this.p1pos = this.relative ? $(this.p1).position() : $(this.p1).offset();
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this.p2pos = this.relative ? $(this.p2).position() : $(this.p2).offset();
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return false;
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};
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/**
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* Handler for mouseup events
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*/
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this.onDragStop = function(e)
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{
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// resume the ability to highlight text
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if(window.webkit || bw.safari)
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document.body.style.webkitUserSelect = 'auto';
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// cancel the listening for drag events
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rcube_event.remove_listener({element:document, event:'mousemove', object:this, method:'onDrag'});
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rcube_event.remove_listener({element:document, event:'mouseup', object:this, method:'onDragStop'});
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this.drag_active = false;
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var iframes = document.getElementsByTagName('iframe');
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for (var n in iframes)
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{
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var iframedoc;
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if (iframes[n].contentDocument)
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iframedoc = iframes[n].contentDocument;
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else if (iframes[n].contentWindow)
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iframedoc = iframes[n].contentWindow.document;
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else if (iframes[n].document)
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iframedoc = iframes[n].document;
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if (iframedoc)
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{
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if (this.iframe_events[n]) {
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if (iframedoc.removeEventListener)
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iframedoc.removeEventListener('mousemove', this.iframe_events[n], false);
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else if (iframedoc.detachEvent)
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iframedoc.detachEvent('onmousemove', this.iframe_events[n]);
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else
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iframedoc.onmousemove = null;
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}
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rcube_event.remove_listener({element:iframedoc, event:'mouseup', object:this, method:'onDragStop'});
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}
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}
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this.set_cookie();
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return bw.safari ? true : rcube_event.cancel(e);
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};
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/**
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* Handler for window resize events
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*/
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this.onResize = function(e)
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{
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if (this.horizontal)
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{
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var new_height = parseInt(this.p2.parentNode.offsetHeight, 10) - parseInt(this.p2.style.top, 10) - (bw.ie8 ? 2 : 0);
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this.p2.style.height = (new_height > 0 ? new_height : 0) +'px';
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}
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else
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this.p2.style.width = parseInt(this.p2.parentNode.offsetWidth, 10) - parseInt(this.p2.style.left, 10) + 'px';
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};
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this.set_cookie = function()
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{
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// save state in cookie
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var exp = new Date();
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exp.setYear(exp.getFullYear() + 1);
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bw.set_cookie(this.id, this.pos, exp);
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};
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} // end class rcube_splitter
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