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// (C) Copyright 2015 Martin Dougiamas
//
// 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.
import { Injectable } from '@angular/core';
import { Clipboard } from '@ionic-native/clipboard';
import { CoreAppProvider } from '../../../providers/app';
/**
* Emulates the Cordova Clipboard plugin in desktop apps and in browser.
*/
@Injectable()
export class ClipboardMock extends Clipboard {
isDesktop: boolean;
clipboard: any;
copyTextarea: HTMLTextAreaElement;
constructor(appProvider: CoreAppProvider) {
super();
this.isDesktop = appProvider.isDesktop();
if (this.isDesktop) {
this.clipboard = require('electron').clipboard;
} else {
// In browser the text must be selected in order to copy it. Create a hidden textarea to put the text in it.
this.copyTextarea = document.createElement('textarea');
this.copyTextarea.className = 'mm-browser-copy-area';
this.copyTextarea.setAttribute('aria-hidden', 'true');
document.body.appendChild(this.copyTextarea);
}
}
/**
* Copy some text to the clipboard.
*
* @param {string} text The text to copy.
* @return {Promise<any>} Promise resolved when copied.
*/
copy(text: string) : Promise<any> {
return new Promise((resolve, reject) => {
if (this.isDesktop) {
this.clipboard.writeText(text);
resolve();
} else {
// Put the text in the hidden textarea and select it.
this.copyTextarea.innerHTML = text;
this.copyTextarea.select();
try {
if (document.execCommand('copy')) {
resolve();
} else {
reject();
}
} catch (err) {
reject();
}
this.copyTextarea.innerHTML = '';
}
});
}
/*
* Get the text stored in the clipboard.
*
* @return {Promise<any>} Promise resolved with the text.
*/
paste() : Promise<any> {
return new Promise((resolve, reject) => {
if (this.isDesktop) {
resolve(this.clipboard.readText());
} else {
// Paste the text in the hidden textarea and get it.
this.copyTextarea.innerHTML = '';
this.copyTextarea.select();
try {
if (document.execCommand('paste')) {
resolve(this.copyTextarea.innerHTML);
} else {
reject();
}
} catch (err) {
reject();
}
this.copyTextarea.innerHTML = '';
}
});
}
}