/** * This class manages stubs associated with `link` requests. These bind to some other * descriptor and forward changes from there. * @private */Ext.define('Ext.app.bind.LinkStub', { extend: 'Ext.app.bind.Stub', isLinkStub: true, binding: null, destroy: function () { var me = this, binding = me.binding, owner = me.owner; if (binding) { me.binding = null; binding.destroy(); if (owner) { delete owner.linkData[me.name]; } } me.target = null; me.callParent(); }, getFullName: function () { var me = this; return me.fullName || (me.fullName = '(' + me.callParent() + ' -> ' + me.binding.getFullName() + ')'); }, getDataObject: function () { var binding = this.binding; return binding && binding.getDataObject(); }, getRawValue: function () { var binding = this.binding; return binding && binding.getRawValue(); }, getValue: function () { var binding = this.binding; return binding && binding.getValue(); }, getTargetStub: function () { var binding = this.binding; return binding && binding.stub; }, isLoading: function () { var binding = this.binding; return binding ? binding.isLoading() : false; }, link: function (bindDescriptor, target) { var me = this, binding = me.binding; if (binding) { binding.destroy(); } target = me.target = target || me.owner; me.linkDescriptor = bindDescriptor; me.binding = target.bind(bindDescriptor, me.onChange, me); me.binding.deep = true; }, onChange: function () { this.invalidate(true); }, react: function () { var me = this, linkData = me.owner.linkData; linkData[me.name] = me.getValue(); me.callParent(); }, privates: { collect: function() { var me = this, result = me.callParent(), binding = me.binding ? 1 : 0; return result + binding; }, sort: function () { var binding = this.binding; if (binding) { // We want to make sure our binding reacts before we do so that it can provide // whatever value we might need first. this.scheduler.sortItem(binding); } } }});