Extjs 4, Event handling, scope, custom components
I have following problem. I have grid with tbar . Inside tbar I have number of Ext.form.field.Trigger .
When the user click on trigger button I want to filter the store using function that is provided with grid . I want to define functionality of triggerclick inside defined class , so I can reuse this component with different grid .
So, in short I want to find the panel where clicked component is placed and call panel function, or pass reference of panel to triggerclick , or fire an event with some parameter that will calculated based on where the button was clicked, or maybe there is a better method to accomplish this.
The code (FilterField -> extension of trigger):
Ext.define('GSIP.core.components.FilterField', {
extend: 'Ext.form.field.Trigger',
alias: 'widget.filterfield',
initComponent: function() {
this.addEvents('filterclick');
this.callParent(arguments);
},
onTriggerClick: function(e, t) {
//Ext.getCmp('gsip_plan_list').filterList(); - working but dont want this
//this.fireEvent('filterclick'); - controller cant see it,
//this.filterList; - is it possible to pass scope to panel or reference to panel
//e.getSomething() - is it possible to get panel via EventObject? smth like e.getEl().up(panel)
}
});
code of panel:
Ext.define('GSIP.view.plans.PlanReqList', {
extend: 'Ext.grid.Panel',
alias: 'widget.gsip_devplan_list',
id: 'gsip_plan_list',
title: i18n.getMsg('gsip.view.PlanReqList.title'),
layout: 'fit',
initComponent: function() {
this.store = 'DevPlan';
this.tbar = [{
xtype: 'filterfield',
id: 'filter_login',
triggerCls: 'icon-user',
//scope:this - how to pass scope to panel without defining onTriggerClick here
// onTriggerClick: function() {
// this.fireEvent('filterclick'); //working event is fired but controller cant see it
// this.filterList; //this is working but i dont want to put this code in every filterfield
// },
// listeners : {
// filterclick: function(btn, e, eOpts) { //this is working
// }
// },
}];
this.columns = [{
id: 'id',
header: "Id",
dataIndex: "id",
width: 50,
sortable: true,
filterable: true
}, {
header: "Name",
dataIndex: "name",
width: 150,
sortable: true,
filterable: true
}, {
header: "Author",
dataIndex: "author",
sortable: true,
renderer: this.renderLogin,
filterable: true
}];
this.callParent(arguments);
},
filterList: function() {
this.store.clearFilter();
this.store.filter({
property: 'id',
value: this.down("#filter_id").getValue()
}, {
property: 'name',
value: this.down("#filter_name").getValue()
});
},
renderLogin: function(value, metadata, record) {
return value.login;
}
});
part of code of Controller:
init: function() {
this.control({
'attachments': {
filesaved: this.scanSaved,
}
}, {
'scan': {
filesaved: this.attachmentSaved
}
}, {
'#filter_login': {
filterclick: this.filterStore //this is not listened
}
});
},
filterStore: function() {
console.log('filtering store');
this.getPlanListInstance().filter();
},
Controller can listen to anything. Just need to specify exactly what to. But I would fire events on the panel level - add this into your trigger handler:
this.up('panel').fireEvent('triggerclicked');
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