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95 lines
3.5 KiB
JavaScript
95 lines
3.5 KiB
JavaScript
/////////////////////////////////////////////////////////////
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//
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// pgAdmin 4 - PostgreSQL Tools
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//
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// Copyright (C) 2013 - 2021, The pgAdmin Development Team
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// This software is released under the PostgreSQL Licence
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//
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//////////////////////////////////////////////////////////////
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define(['sources/gettext', 'alertify'], function (gettext, alertify) {
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var clipboard = {
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copyTextToClipboard: function (text) {
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var textArea = document.createElement('textarea');
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//
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// *** This styling is an extra step which is likely not required. ***
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//
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// Why is it here? To ensure:
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// 1. the element is able to have focus and selection.
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// 2. if element was to flash render it has minimal visual impact.
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// 3. less flakyness with selection and copying which **might** occur if
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// the textarea element is not visible.
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//
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// The likelihood is the element won't even render, not even a flash,
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// so some of these are just precautions. However in IE the element
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// is visible whilst the popup box asking the user for permission for
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// the web page to copy to the clipboard.
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//
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// Place in top-left corner of screen regardless of scroll position.
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textArea.style.position = 'fixed';
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textArea.style.top = 0;
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textArea.style.left = 0;
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// Ensure it has a small width and height. Setting to 1px / 1em
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// doesn't work as this gives a negative w/h on some browsers.
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textArea.style.width = '2em';
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textArea.style.height = '2em';
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// We don't need padding, reducing the size if it does flash render.
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textArea.style.padding = 0;
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// Clean up any borders.
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textArea.style.border = 'none';
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textArea.style.outline = 'none';
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textArea.style.boxShadow = 'none';
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// Avoid flash of white box if rendered for any reason.
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textArea.style.background = 'transparent';
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document.body.appendChild(textArea);
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textArea.textContent = text;
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textArea.select();
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var copyTextToClipboardHandler = function(e) {
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/* Remove oncopy event listener from document as we add listener for
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* oncopy event on each copy operation.
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* Also we don't want this listener to be persistent; Otherwise it'll get
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* called for each copy operation performed on any input/textarea from
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* this document.
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*/
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document.removeEventListener('copy', copyTextToClipboardHandler);
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var clipboardData = e.clipboardData || window.clipboardData;
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if (clipboardData) {
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clipboardData.setData('text', text);
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// As there no uniform way to read data from clipboard
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// storing copied data into main window object, so it is accessible from anywhere in the application
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window.parent.window.clipboardData = text;
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// We want our data, not data from any selection, to be written to the clipboard
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e.preventDefault();
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}
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};
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document.addEventListener('copy', copyTextToClipboardHandler);
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try {
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// just perform copy on empty textarea so that copy event will be
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// triggered on document and then we can set clipboardData.
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document.execCommand('copy');
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} catch (err) {
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alertify.alert(
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gettext('Error'),
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gettext('Oops, unable to copy to clipboard'));
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}
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document.body.removeChild(textArea);
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},
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getTextFromClipboard: function() {
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return window.parent.window.clipboardData || '';
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},
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};
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return clipboard;
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});
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