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import {NgModule,Directive,Component,ElementRef,EventEmitter,AfterViewInit,Output,OnDestroy,HostBinding,HostListener,Input} from '@angular/core';
import {DomHandler} from '../dom/domhandler';
import {CommonModule} from '@angular/common';
@Directive({
selector: '[pButton]'
})
export class ButtonDirective implements AfterViewInit, OnDestroy {
@Input() iconPos: 'left' | 'right' = 'left';
@Input() cornerStyleClass: string = 'ui-corner-all';
public _label: string;
public _icon: string;
public initialized: boolean;
constructor(public el: ElementRef) {}
ngAfterViewInit() {
DomHandler.addMultipleClasses(this.el.nativeElement, this.getStyleClass());
if(this.icon) {
let iconElement = document.createElement("span");
iconElement.setAttribute("aria-hidden", "true");
let iconPosClass = (this.iconPos == 'right') ? 'ui-button-icon-right': 'ui-button-icon-left';
iconElement.className = iconPosClass + ' ui-clickable ' + this.icon;
this.el.nativeElement.appendChild(iconElement);
}
let labelElement = document.createElement("span");
labelElement.className = 'ui-button-text ui-clickable';
labelElement.appendChild(document.createTextNode(this.label||'ui-btn'));
this.el.nativeElement.appendChild(labelElement);
this.initialized = true;
}
getStyleClass(): string {
let styleClass = 'ui-button ui-widget ui-state-default ' + this.cornerStyleClass;
if(this.icon) {
if(this.label != null && this.label != undefined) {
if(this.iconPos == 'left')
styleClass = styleClass + ' ui-button-text-icon-left';
else
styleClass = styleClass + ' ui-button-text-icon-right';
}
else {
styleClass = styleClass + ' ui-button-icon-only';
}
}
else {
if(this.label) {
styleClass = styleClass + ' ui-button-text-only';
}
else {
styleClass = styleClass + ' ui-button-text-empty';
}
}
return styleClass;
}
@Input() get label(): string {
return this._label;
}
set label(val: string) {
this._label = val;
if(this.initialized) {
DomHandler.findSingle(this.el.nativeElement, '.ui-button-text').textContent = this._label;
if(!this.icon) {
if (this._label) {
DomHandler.removeClass(this.el.nativeElement, 'ui-button-text-empty');
DomHandler.addClass(this.el.nativeElement, 'ui-button-text-only');
}
else {
DomHandler.addClass(this.el.nativeElement, 'ui-button-text-empty');
DomHandler.removeClass(this.el.nativeElement, 'ui-button-text-only');
}
}
}
}
@Input() get icon(): string {
return this._icon;
}
set icon(val: string) {
this._icon = val;
if(this.initialized) {
let iconPosClass = (this.iconPos == 'right') ? 'ui-button-icon-right': 'ui-button-icon-left';
DomHandler.findSingle(this.el.nativeElement, '.ui-clickable').className =
iconPosClass + ' ui-clickable ' + this.icon;
}
}
ngOnDestroy() {
while(this.el.nativeElement.hasChildNodes()) {
this.el.nativeElement.removeChild(this.el.nativeElement.lastChild);
}
this.initialized = false;
}
}
@Component({
selector: 'p-button',
template: `
<button [attr.type]="type" [class]="styleClass" [style]="style" [disabled]="disabled"
[ngClass]="{'ui-button ui-widget ui-state-default ui-corner-all':true,
'ui-button-icon-only': (icon && !label),
'ui-button-text-icon-left': (icon && label && iconPos === 'left'),
'ui-button-text-icon-right': (icon && label && iconPos === 'right'),
'ui-button-text-only': (!icon && label),
'ui-button-text-empty': (!icon && !label),
'ui-state-disabled': disabled}"
(click)="onClick.emit($event)" (focus)="onFocus.emit($event)" (blur)="onBlur.emit($event)">
<ng-content></ng-content>
<span [ngClass]="{'ui-clickable': true,
'ui-button-icon-left': (iconPos === 'left'),
'ui-button-icon-right': (iconPos === 'right')}"
[class]="icon" *ngIf="icon"></span>
<span class="ui-button-text ui-clickable">{{label||'ui-btn'}}</span>
</button>
`
})
export class Button {
@Input() type: string;
@Input() iconPos: string = 'left';
@Input() icon: string;
@Input() label: string;
@Input() disabled: boolean;
@Input() style: any;
@Input() styleClass: string;
@Output() onClick: EventEmitter<any> = new EventEmitter();
@Output() onFocus: EventEmitter<any> = new EventEmitter();
@Output() onBlur: EventEmitter<any> = new EventEmitter();
}
@NgModule({
imports: [CommonModule],
exports: [ButtonDirective,Button],
declarations: [ButtonDirective,Button]
})
export class ButtonModule { }
