/* Button features:
 * - observe selection changes to enable/disable the button using enableFn()
 * - pop up confirmation dialog using confirmMsg()
 */
Ext.define('Proxmox.button.Button', {
    extend: 'Ext.button.Button',
    alias: 'widget.proxmoxButton',

    // the selection model to observe
    selModel: undefined,

    // if 'false' handler will not be called (button disabled)
    enableFn: function(record) { },

    // function(record) or text
    confirmMsg: false,

    // take special care in confirm box (select no as default).
    dangerous: false,

    initComponent: function() {
	/*jslint confusion: true */

        var me = this;

	if (me.handler) {

	    // Note: me.realHandler may be a string (see named scopes)
	    var realHandler = me.handler;

	    me.handler = function(button, event) {
		var rec, msg;
		if (me.selModel) {
		    rec = me.selModel.getSelection()[0];
		    if (!rec || (me.enableFn(rec) === false)) {
			return;
		    }
		}

		if (me.confirmMsg) {
		    msg = me.confirmMsg;
		    if (Ext.isFunction(me.confirmMsg)) {
			msg = me.confirmMsg(rec);
		    }
		    Ext.MessageBox.defaultButton = me.dangerous ? 2 : 1;
		    Ext.Msg.show({
			title: gettext('Confirm'),
			icon: me.dangerous ? Ext.Msg.WARNING : Ext.Msg.QUESTION,
			msg: msg,
			buttons: Ext.Msg.YESNO,
			defaultFocus: me.dangerous ? 'no' : 'yes',
			callback: function(btn) {
			    if (btn !== 'yes') {
				return;
			    }
			    Ext.callback(realHandler, me.scope, [button, event, rec], 0, me);
			}
		    });
		} else {
		    Ext.callback(realHandler, me.scope, [button, event, rec], 0, me);
		}
	    };
	}

	me.callParent();

	var grid;
	if (!me.selModel && me.selModel !== null) {
	    grid = me.up('grid');
	    if (grid && grid.selModel) {
		me.selModel = grid.selModel;
	    }
	}

	if (me.waitMsgTarget === true) {
	    grid = me.up('grid');
	    if (grid) {
		me.waitMsgTarget = grid;
	    } else {
		throw "unable to find waitMsgTarget";
	    }
	}
	
	if (me.selModel) {

	    me.mon(me.selModel, "selectionchange", function() {
		var rec = me.selModel.getSelection()[0];
		if (!rec || (me.enableFn(rec) === false)) {
		    me.setDisabled(true);
		} else  {
		    me.setDisabled(false);
		}
	    });
	}
    }
});


Ext.define('Proxmox.button.StdRemoveButton', {
    extend: 'Proxmox.button.Button',
    alias: 'widget.proxmoxStdRemoveButton',

    text: gettext('Remove'),

    disabled: true,

    config: {
	baseurl: undefined
    },

    getUrl: function(rec) {
	var me = this;
	
	return me.baseurl + '/' + rec.getId();
    },

    // also works with names scopes
    callback: function(options, success, response) {},

    getRecordName: function(rec) { return rec.getId() },

    confirmMsg: function (rec) {
	var me = this;

	var name = me.getRecordName(rec);
	return Ext.String.format(
	    gettext('Are you sure you want to remove entry {0}'),
	    "'" + name + "'");
    },

    handler: function(btn, event, rec) {
	var me = this;

	Proxmox.Utils.API2Request({
	    url: me.getUrl(rec),
	    method: 'DELETE',
	    waitMsgTarget: me.waitMsgTarget,
	    callback: function(options, success, response) {
		Ext.callback(me.callback, me.scope, [options, success, response], 0, me);
	    },
	    failure: function (response, opts) {
		Ext.Msg.alert(gettext('Error'), response.htmlStatus);
	    }
	});
    }
});