/**

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* plugin.js

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*

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* Copyright, Moxiecode Systems AB

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* Released under LGPL License.

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*

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* License: http://www.tinymce.com/license

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* Contributing: http://www.tinymce.com/contributing

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*/

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// Forked for WordPress so it can be turned on/off after loading.

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/*global tinymce:true */

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/*eslint no-nested-ternary:0 */

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/**

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* Auto Resize

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*

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* This plugin automatically resizes the content area to fit its content height.

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* It will retain a minimum height, which is the height of the content area when

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* it's initialized.

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*/

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tinymce.PluginManager.add( 'wpautoresize', function( editor ) {

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var settings = editor.settings,

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oldSize = 300,

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isActive = false;

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if ( editor.settings.inline || tinymce.Env.iOS ) {

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return;

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}

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function isFullscreen() {

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return editor.plugins.fullscreen && editor.plugins.fullscreen.isFullscreen();

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}

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function getInt( n ) {

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return parseInt( n, 10 ) || 0;

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}

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/**

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* This method gets executed each time the editor needs to resize.

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*/

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function resize( e ) {

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var deltaSize, doc, body, docElm, DOM = tinymce.DOM, resizeHeight, myHeight,

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marginTop, marginBottom, paddingTop, paddingBottom, borderTop, borderBottom;

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if ( ! isActive ) {

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return;

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}

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doc = editor.getDoc();

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if ( ! doc ) {

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return;

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}

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e = e || {};

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body = doc.body;

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docElm = doc.documentElement;

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resizeHeight = settings.autoresize_min_height;

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if ( ! body || ( e && e.type === 'setcontent' && e.initial ) || isFullscreen() ) {

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if ( body && docElm ) {

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body.style.overflowY = 'auto';

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docElm.style.overflowY = 'auto'; // Old IE.

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}

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return;

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}

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// Calculate outer height of the body element using CSS styles.

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marginTop = editor.dom.getStyle( body, 'margin-top', true );

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marginBottom = editor.dom.getStyle( body, 'margin-bottom', true );

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paddingTop = editor.dom.getStyle( body, 'padding-top', true );

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paddingBottom = editor.dom.getStyle( body, 'padding-bottom', true );

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borderTop = editor.dom.getStyle( body, 'border-top-width', true );

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borderBottom = editor.dom.getStyle( body, 'border-bottom-width', true );

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myHeight = body.offsetHeight + getInt( marginTop ) + getInt( marginBottom ) +

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getInt( paddingTop ) + getInt( paddingBottom ) +

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getInt( borderTop ) + getInt( borderBottom );

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// IE < 11, other?

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if ( myHeight && myHeight < docElm.offsetHeight ) {

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myHeight = docElm.offsetHeight;

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}

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// Make sure we have a valid height.

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if ( isNaN( myHeight ) || myHeight <= 0 ) {

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// Get height differently depending on the browser used.

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myHeight = tinymce.Env.ie ? body.scrollHeight : ( tinymce.Env.webkit && body.clientHeight === 0 ? 0 : body.offsetHeight );

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}

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// Don't make it smaller than the minimum height.

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if ( myHeight > settings.autoresize_min_height ) {

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resizeHeight = myHeight;

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}

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// If a maximum height has been defined don't exceed this height.

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if ( settings.autoresize_max_height && myHeight > settings.autoresize_max_height ) {

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resizeHeight = settings.autoresize_max_height;

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body.style.overflowY = 'auto';

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docElm.style.overflowY = 'auto'; // Old IE.

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} else {

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body.style.overflowY = 'hidden';

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docElm.style.overflowY = 'hidden'; // Old IE.

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body.scrollTop = 0;

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}

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// Resize content element.

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if (resizeHeight !== oldSize) {

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deltaSize = resizeHeight - oldSize;

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DOM.setStyle( editor.iframeElement, 'height', resizeHeight + 'px' );

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oldSize = resizeHeight;

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// WebKit doesn't decrease the size of the body element until the iframe gets resized.

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// So we need to continue to resize the iframe down until the size gets fixed.

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if ( tinymce.isWebKit && deltaSize < 0 ) {

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resize( e );

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}

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editor.fire( 'wp-autoresize', { height: resizeHeight, deltaHeight: e.type === 'nodechange' ? deltaSize : null } );

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}

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}

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/**

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* Calls the resize x times in 100ms intervals. We can't wait for load events since

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* the CSS files might load async.

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*/

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function wait( times, interval, callback ) {

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setTimeout( function() {

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resize();

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if ( times-- ) {

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wait( times, interval, callback );

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} else if ( callback ) {

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callback();

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}

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}, interval );

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}

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// Define minimum height.

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settings.autoresize_min_height = parseInt(editor.getParam( 'autoresize_min_height', editor.getElement().offsetHeight), 10 );

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// Define maximum height.

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settings.autoresize_max_height = parseInt(editor.getParam( 'autoresize_max_height', 0), 10 );

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function on() {

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if ( ! editor.dom.hasClass( editor.getBody(), 'wp-autoresize' ) ) {

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isActive = true;

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editor.dom.addClass( editor.getBody(), 'wp-autoresize' );

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// Add appropriate listeners for resizing the content area.

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editor.on( 'nodechange setcontent keyup FullscreenStateChanged', resize );

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resize();

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}

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}

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function off() {

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var doc;

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// Don't turn off if the setting is 'on'.

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if ( ! settings.wp_autoresize_on ) {

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isActive = false;

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doc = editor.getDoc();

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editor.dom.removeClass( editor.getBody(), 'wp-autoresize' );

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editor.off( 'nodechange setcontent keyup FullscreenStateChanged', resize );

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doc.body.style.overflowY = 'auto';

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doc.documentElement.style.overflowY = 'auto'; // Old IE.

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oldSize = 0;

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}

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}

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if ( settings.wp_autoresize_on ) {

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// Turn resizing on when the editor loads.

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isActive = true;

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editor.on( 'init', function() {

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editor.dom.addClass( editor.getBody(), 'wp-autoresize' );

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});

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editor.on( 'nodechange keyup FullscreenStateChanged', resize );

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editor.on( 'setcontent', function() {

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wait( 3, 100 );

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});

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if ( editor.getParam( 'autoresize_on_init', true ) ) {

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editor.on( 'init', function() {

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// Hit it 10 times in 200 ms intervals.

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wait( 10, 200, function() {

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// Hit it 5 times in 1 sec intervals.

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wait( 5, 1000 );

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});

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});

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}

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}

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// Reset the stored size.

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editor.on( 'show', function() {

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oldSize = 0;

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});

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// Register the command.

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editor.addCommand( 'wpAutoResize', resize );

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// On/off.

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editor.addCommand( 'wpAutoResizeOn', on );

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editor.addCommand( 'wpAutoResizeOff', off );

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});

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