/**
* plugin.js
*
* Copyright, Moxiecode Systems AB
* Released under LGPL License.
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*/
/*global tinymce:true */
/**
* Auto Resize
*
* This plugin automatically resizes the content area to fit its content height.
* It will retain a minimum height, which is the height of the content area when
* it's initialized.
*/
tinymce.PluginManager.add('autoresize', function(editor) {
var settings = editor.settings, oldSize = 0;
if (editor.settings.inline) {
return;
}
/**
* This method gets executed each time the editor needs to resize.
*/
function resize(e) {
var deltaSize, doc, body, docElm, DOM = tinymce.DOM, resizeHeight, myHeight, marginTop, marginBottom;
doc = editor.getDoc();
if (!doc) {
return;
}
body = doc.body;
docElm = doc.documentElement;
resizeHeight = settings.autoresize_min_height;
if (!body || (e && e.type === "setcontent" && e.initial) ||
(editor.plugins.fullscreen && editor.plugins.fullscreen.isFullscreen())) {
return;
}
// Calculate outer height of the body element using CSS styles
marginTop = editor.dom.getStyle(body, 'margin-top', true);
marginBottom = editor.dom.getStyle(body, 'margin-bottom', true);
myHeight = body.offsetHeight + parseInt(marginTop, 10) + parseInt(marginBottom, 10);
// Make sure we have a valid height
if (isNaN(myHeight) || myHeight <= 0) {
// Get height differently depending on the browser used
myHeight = tinymce.Env.ie ? body.scrollHeight : (tinymce.Env.webkit && body.clientHeight === 0 ? 0 : body.offsetHeight);
}
// Don't make it smaller than the minimum height
if (myHeight > settings.autoresize_min_height) {
resizeHeight = myHeight;
}
// If a maximum height has been defined don't exceed this height
if (settings.autoresize_max_height && myHeight > settings.autoresize_max_height) {
resizeHeight = settings.autoresize_max_height;
body.style.overflowY = "auto";
docElm.style.overflowY = "auto"; // Old IE
} else {
body.style.overflowY = "hidden";
docElm.style.overflowY = "hidden"; // Old IE
body.scrollTop = 0;
}
// Resize content element
if (resizeHeight !== oldSize) {
deltaSize = resizeHeight - oldSize;
DOM.setStyle(DOM.get(editor.id + '_ifr'), 'height', resizeHeight + 'px');
oldSize = resizeHeight;
// WebKit doesn't decrease the size of the body element until the iframe gets resized
// So we need to continue to resize the iframe down until the size gets fixed
if (tinymce.isWebKit && deltaSize < 0) {
resize(e);
}
}
}
/**
* Calls the resize x times in 100ms intervals. We can't wait for load events since
* the CSS files might load async.
*/
function wait(times, interval, callback) {
setTimeout(function() {
resize({});
if (times--) {
wait(times, interval, callback);
} else if (callback) {
callback();
}
}, interval);
}
// Define minimum height
settings.autoresize_min_height = parseInt(editor.getParam('autoresize_min_height', editor.getElement().offsetHeight), 10);
// Define maximum height
settings.autoresize_max_height = parseInt(editor.getParam('autoresize_max_height', 0), 10);
// Add padding at the bottom for better UX
editor.on("init", function() {
var overflowPadding = editor.getParam('autoresize_overflow_padding', 1);
editor.dom.setStyles(editor.getBody(), {
paddingBottom: editor.getParam('autoresize_bottom_margin', 50),
paddingLeft: overflowPadding,
paddingRight: overflowPadding
});
});
// Add appropriate listeners for resizing content area
editor.on("change setcontent paste keyup", resize);
if (editor.getParam('autoresize_on_init', true)) {
editor.on('init', function() {
// Hit it 20 times in 100 ms intervals
wait(20, 100, function() {
// Hit it 5 times in 1 sec intervals
wait(5, 1000);
});
});
}
// Register the command so that it can be invoked by using tinyMCE.activeEditor.execCommand('mceExample');
editor.addCommand('mceAutoResize', resize);
});