tvheadend/vendor/ext-3.4.1/examples/ux/Portal.js
Adam Sutton bafcfff42d webui: restructure webui/extjs source files
I want to keep the 3rd-party packages away from the main source
where possible.
2013-06-03 17:11:01 +01:00

218 lines
6.1 KiB
JavaScript

/*
This file is part of Ext JS 3.4
Copyright (c) 2011-2013 Sencha Inc
Contact: http://www.sencha.com/contact
GNU General Public License Usage
This file may be used under the terms of the GNU General Public License version 3.0 as
published by the Free Software Foundation and appearing in the file LICENSE included in the
packaging of this file.
Please review the following information to ensure the GNU General Public License version 3.0
requirements will be met: http://www.gnu.org/copyleft/gpl.html.
If you are unsure which license is appropriate for your use, please contact the sales department
at http://www.sencha.com/contact.
Build date: 2013-04-03 15:07:25
*/
Ext.ux.Portal = Ext.extend(Ext.Panel, {
layout : 'column',
autoScroll : true,
cls : 'x-portal',
defaultType : 'portalcolumn',
initComponent : function(){
Ext.ux.Portal.superclass.initComponent.call(this);
this.addEvents({
validatedrop:true,
beforedragover:true,
dragover:true,
beforedrop:true,
drop:true
});
},
initEvents : function(){
Ext.ux.Portal.superclass.initEvents.call(this);
this.dd = new Ext.ux.Portal.DropZone(this, this.dropConfig);
},
beforeDestroy : function() {
if(this.dd){
this.dd.unreg();
}
Ext.ux.Portal.superclass.beforeDestroy.call(this);
}
});
Ext.reg('portal', Ext.ux.Portal);
Ext.ux.Portal.DropZone = Ext.extend(Ext.dd.DropTarget, {
constructor : function(portal, cfg){
this.portal = portal;
Ext.dd.ScrollManager.register(portal.body);
Ext.ux.Portal.DropZone.superclass.constructor.call(this, portal.bwrap.dom, cfg);
portal.body.ddScrollConfig = this.ddScrollConfig;
},
ddScrollConfig : {
vthresh: 50,
hthresh: -1,
animate: true,
increment: 200
},
createEvent : function(dd, e, data, col, c, pos){
return {
portal: this.portal,
panel: data.panel,
columnIndex: col,
column: c,
position: pos,
data: data,
source: dd,
rawEvent: e,
status: this.dropAllowed
};
},
notifyOver : function(dd, e, data){
var xy = e.getXY(), portal = this.portal, px = dd.proxy;
// case column widths
if(!this.grid){
this.grid = this.getGrid();
}
// handle case scroll where scrollbars appear during drag
var cw = portal.body.dom.clientWidth;
if(!this.lastCW){
this.lastCW = cw;
}else if(this.lastCW != cw){
this.lastCW = cw;
portal.doLayout();
this.grid = this.getGrid();
}
// determine column
var col = 0, xs = this.grid.columnX, cmatch = false;
for(var len = xs.length; col < len; col++){
if(xy[0] < (xs[col].x + xs[col].w)){
cmatch = true;
break;
}
}
// no match, fix last index
if(!cmatch){
col--;
}
// find insert position
var p, match = false, pos = 0,
c = portal.items.itemAt(col),
items = c.items.items, overSelf = false;
for(var len = items.length; pos < len; pos++){
p = items[pos];
var h = p.el.getHeight();
if(h === 0){
overSelf = true;
}
else if((p.el.getY()+(h/2)) > xy[1]){
match = true;
break;
}
}
pos = (match && p ? pos : c.items.getCount()) + (overSelf ? -1 : 0);
var overEvent = this.createEvent(dd, e, data, col, c, pos);
if(portal.fireEvent('validatedrop', overEvent) !== false &&
portal.fireEvent('beforedragover', overEvent) !== false){
// make sure proxy width is fluid
px.getProxy().setWidth('auto');
if(p){
px.moveProxy(p.el.dom.parentNode, match ? p.el.dom : null);
}else{
px.moveProxy(c.el.dom, null);
}
this.lastPos = {c: c, col: col, p: overSelf || (match && p) ? pos : false};
this.scrollPos = portal.body.getScroll();
portal.fireEvent('dragover', overEvent);
return overEvent.status;
}else{
return overEvent.status;
}
},
notifyOut : function(){
delete this.grid;
},
notifyDrop : function(dd, e, data){
delete this.grid;
if(!this.lastPos){
return;
}
var c = this.lastPos.c,
col = this.lastPos.col,
pos = this.lastPos.p,
panel = dd.panel,
dropEvent = this.createEvent(dd, e, data, col, c,
pos !== false ? pos : c.items.getCount());
if(this.portal.fireEvent('validatedrop', dropEvent) !== false &&
this.portal.fireEvent('beforedrop', dropEvent) !== false){
dd.proxy.getProxy().remove();
panel.el.dom.parentNode.removeChild(dd.panel.el.dom);
if(pos !== false){
c.insert(pos, panel);
}else{
c.add(panel);
}
c.doLayout();
this.portal.fireEvent('drop', dropEvent);
// scroll position is lost on drop, fix it
var st = this.scrollPos.top;
if(st){
var d = this.portal.body.dom;
setTimeout(function(){
d.scrollTop = st;
}, 10);
}
}
delete this.lastPos;
},
// internal cache of body and column coords
getGrid : function(){
var box = this.portal.bwrap.getBox();
box.columnX = [];
this.portal.items.each(function(c){
box.columnX.push({x: c.el.getX(), w: c.el.getWidth()});
});
return box;
},
// unregister the dropzone from ScrollManager
unreg: function() {
Ext.dd.ScrollManager.unregister(this.portal.body);
Ext.ux.Portal.DropZone.superclass.unreg.call(this);
}
});