<?php
/**
 * @copyright	Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
 * @license		GNU General Public License version 2 or later; see LICENSE.txt
 */

// no direct access
defined('_JEXEC') or die;

/**
 * Example Editor plugin
 *
 * @package		Joomla
 * @subpackage	Editor
 * @since		1.6
 */
class plgEditorExample extends JPlugin
{
	/**
	 * Method to handle the onInitEditor event.
	 *  - Initialises the Editor
	 *
	 * @return	string	JavaScript Initialization string
	 * @since 1.5
	 */
	public function onInit()
	{
		$txt =	"<script type=\"text/javascript\">
					function insertAtCursor(myField, myValue) {
						if (document.selection) {
							// IE support
							myField.focus();
							sel = document.selection.createRange();
							sel.text = myValue;
						} else if (myField.selectionStart || myField.selectionStart == '0') {
							// MOZILLA/NETSCAPE support
							var startPos = myField.selectionStart;
							var endPos = myField.selectionEnd;
							myField.value = myField.value.substring(0, startPos)
								+ myValue
								+ myField.value.substring(endPos, myField.value.length);
						} else {
							myField.value += myValue;
						}
					}
				</script>";

		return $txt;
	}

	/**
	 * Copy editor content to form field.
	 *
	 * Not applicable in this editor.
	 *
	 * @return	void
	 */
	function onSave()
	{
		return;
	}

	/**
	 * Get the editor content.
	 *
	 * @param	string	$id		The id of the editor field.
	 *
	 * @return	string
	 */
	function onGetContent($id)
	{
		return "document.getElementById('$id').value;\n";
	}

	/**
	 * Set the editor content.
	 *
	 * @param	string	$id		The id of the editor field.
	 * @param	string	$html	The content to set.
	 *
	 * @return	string
	 */
	function onSetContent($id, $html)
	{
		return "document.getElementById('$id').value = $html;\n";
	}

	/**
	 * @param	string	$id
	 *
	 * @return	string
	 */
	function onGetInsertMethod($id)
	{
		static $done = false;

		// Do this only once.
		if (!$done) {
			$doc = JFactory::getDocument();
			$js = "\tfunction jInsertEditorText(text, editor) {
				insertAtCursor(document.getElementById(editor), text);
			}";
			$doc->addScriptDeclaration($js);
		}

		return true;
	}

	/**
	 * Display the editor area.
	 *
	 * @param	string	$name		The control name.
	 * @param	string	$html		The contents of the text area.
	 * @param	string	$width		The width of the text area (px or %).
	 * @param	string	$height		The height of the text area (px or %).
	 * @param	int		$col		The number of columns for the textarea.
	 * @param	int		$row		The number of rows for the textarea.
	 * @param	boolean	$buttons	True and the editor buttons will be displayed.
	 * @param	string	$id			An optional ID for the textarea (note: since 1.6). If not supplied the name is used.
	 * @param	string	$asset
	 * @param	object	$author
	 * @param	array	$params		Associative array of editor parameters.
	 *
	 * @return	string
	 */
	function onDisplay($name, $content, $width, $height, $col, $row, $buttons = true, $id = null, $asset = null, $author = null, $params = array())
	{
		if (empty($id)) {
			$id = $name;
		}

		// Only add "px" to width and height if they are not given as a percentage
		if (is_numeric($width)) {
			$width .= 'px';
		}

		if (is_numeric($height)) {
			$height .= 'px';
		}

		$buttons = $this->_displayButtons($id, $buttons, $asset, $author);
		$editor  = "<textarea name=\"$name\" id=\"$id\" cols=\"$col\" rows=\"$row\" style=\"width: $width; height: $height;\">$content</textarea>" . $buttons;

		return $editor;
	}

	function _displayButtons($name, $buttons, $asset, $author)
	{
		// Load modal popup behavior
		JHtml::_('behavior.modal', 'a.modal-button');

		$args['name'] = $name;
		$args['event'] = 'onGetInsertMethod';

		$return = '';
		$results[] = $this->update($args);

		foreach ($results as $result)
		{
			if (is_string($result) && trim($result)) {
				$return .= $result;
			}
		}

		if (is_array($buttons) || (is_bool($buttons) && $buttons)) {
			$results = $this->_subject->getButtons($name, $buttons, $asset, $author);

			// This will allow plugins to attach buttons or change the behavior on the fly using AJAX
			$return .= "\n<div id=\"editor-xtd-buttons\">\n";

			foreach ($results as $button)
			{
				// Results should be an object
				if ($button->get('name')) {
					$modal		= ($button->get('modal')) ? 'class="modal-button"' : null;
					$href		= ($button->get('link')) ? 'href="'.JURI::base().$button->get('link').'"' : null;
					$onclick	= ($button->get('onclick')) ? 'onclick="'.$button->get('onclick').'"' : null;
					$title      = ($button->get('title')) ? $button->get('title') : $button->get('text');
					$return .= "<div class=\"button2-left\"><div class=\"".$button->get('name')."\"><a ".$modal." title=\"".$title."\" ".$href." ".$onclick." rel=\"".$button->get('options')."\">".$button->get('text')."</a></div></div>\n";
				}
			}

			$return .= "</div>\n";
		}

		return $return;
	}
}
