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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
'use strict';
import {EVENTS} from "app/utils";
import {EventListenerService} from "app/services";
export interface ILoaderScope extends ng.IScope {
display:boolean; // Toggle show || hide scroll
size:string; // small || medium || large
elementSelector:string; // Jquery selector to hide and scroll inside
relative:boolean; // Will use the parent of <loader> element and hide it and scroll inside
loaderType:string;
}
export class LoaderDirective implements ng.IDirective {
constructor(private EventListenerService:EventListenerService) {
}
/*
* relative is used when inserting the HTML loader inside some div <loader data-display="isLoading" relative="true"></loader>
* elementSelector when we want to pass the Jquery selector of the loader.
*/
scope = {
display: '=',
size: '@?',
elementSelector: '@?',
relative: '=?',
loaderType: '@?'
};
public replace = false;
public restrict = 'E';
template = ():string => {
return require('./loader-directive.html');
}
link = (scope:ILoaderScope, element:any) => {
let interval;
this.EventListenerService.registerObserverCallback(EVENTS.SHOW_LOADER_EVENT, (loaderType)=> {
if (scope.loaderType !== loaderType) {
return;
}
scope.display = true;
});
this.EventListenerService.registerObserverCallback(EVENTS.HIDE_LOADER_EVENT, (loaderType)=> {
if (scope.loaderType !== loaderType) {
return;
}
scope.display = false;
});
let calculateSizesForFixPosition = (positionStyle:string):void => {
// This is problematic, I do not want to change the parent position.
// set the loader on all the screen
let parentPosition = element.parent().position();
let parentWidth = element.parent().width();
let parentHeight = element.parent().height();
element.css('position', positionStyle);
element.css('top', parentPosition.top);
element.css('left', parentPosition.left);
element.css('width', parentWidth);
element.css('height', parentHeight);
};
let setStyle = (positionStyle:string):void => {
switch (positionStyle) {
case 'absolute':
case 'fixed':
// The parent size is not set yet, still loading, so need to use interval to update the size.
interval = window.setInterval(()=> {
calculateSizesForFixPosition(positionStyle);
}, 2000);
break;
default:
// Can change the parent position to relative without causing style issues.
element.parent().css('position', 'relative');
break;
}
};
// This should be executed after the dom loaded
window.setTimeout(():void => {
element.css('display', 'none');
if (scope.elementSelector) {
let elemParent = angular.element(scope.elementSelector);
let positionStyle:string = elemParent.css('position');
setStyle(positionStyle);
}
if (scope.relative === true) {
let positionStyle:string = element.parent().css('position');
setStyle(positionStyle);
}
if (!scope.size) {
scope.size = 'large';
}
}, 0);
if (scope.elementSelector) {
}
function cleanUp() {
clearInterval(interval);
}
scope.$watch("display", (newVal, oldVal) => {
element.css('display', 'none');
if (newVal === true) {
window.setTimeout(():void => {
element.css('display', 'block');
}, 500);
} else {
window.setTimeout(():void => {
element.css('display', 'none');
}, 0);
}
});
scope.$on('$destroy', cleanUp);
};
public static factory = (EventListenerService:EventListenerService)=> {
return new LoaderDirective( EventListenerService);
};
}
LoaderDirective.factory.$inject = ['EventListenerService'];
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