add extjs 6.0.1 sources

[extjs.git] / extjs / packages / core / src / app / bind / LinkStub.js

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