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diff --git a/www/wiki/extensions/MultimediaViewer/resources/mmv/ui/mmv.ui.permission.js b/www/wiki/extensions/MultimediaViewer/resources/mmv/ui/mmv.ui.permission.js
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@@ -0,0 +1,173 @@
+/*
+ * This file is part of the MediaWiki extension MediaViewer.
+ *
+ * MediaViewer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * MediaViewer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with MediaViewer.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+( function ( mw, $, oo ) {
+	var P;
+
+	/**
+	 * A box to display additional terms or remarks from the image author.
+	 * (Typically comes from the Permission field of the {{Information}} template.)
+	 * It has two states: when closed, it just shows some text, when open, it shows the HTML
+	 * block supplied by the author in its full beauty.
+	 *
+	 * @class mw.mmv.ui.Permission
+	 * @extends mw.mmv.ui.Element
+	 * @constructor
+	 * @param {jQuery} $container
+	 * @param {mw.mmv.ui.MetadataPanelScroller} scroller
+	 */
+	function Permission( $container, scroller ) {
+		var permission = this;
+
+		mw.mmv.ui.Element.call( this, $container );
+
+		/** @property {mw.mmv.HtmlUtils} htmlUtils - */
+		this.htmlUtils = new mw.mmv.HtmlUtils();
+
+		/**
+		 * Contains everything else.
+		 * @property {jQuery}
+		 */
+		this.$box = $( '<div>' )
+			.addClass( 'mw-mmv-permission-box mw-mmv-info-box empty' )
+			.appendTo( this.$container );
+
+		/**
+		 * Box title
+		 * @property {jQuery}
+		 */
+		this.$title = $( '<h3>' )
+			.text( mw.message( 'multimediaviewer-permission-title' ).text() )
+			.appendTo( this.$box );
+
+		/**
+		 * Plain-text version of the author's message
+		 * This is just the text parsed out from the original markup, it might not make much sense
+		 * (e.g. if the original is a HTML table)
+		 * @property {jQuery}
+		 */
+		this.$text = $( '<div>' )
+			.addClass( 'mw-mmv-permission-text' )
+			.appendTo( this.$box )
+			.on( 'click', '.mw-mmv-permission-text-viewmore', function ( e ) {
+				e.preventDefault();
+				permission.grow();
+				permission.scroller.toggle( 'up' );
+			} )
+		;
+
+		/**
+		 * A helper element to fade off text
+		 * @property {jQuery}
+		 */
+		this.$fader = $( '<div>' )
+			.addClass( 'mw-mmv-permission-text-fader' )
+			.append(
+				$( '<a>' )
+					.addClass( 'mw-mmv-permission-text-viewmore' )
+					.prop( 'href', '#' )
+					.text( mw.message( 'multimediaviewer-permission-viewmore' ).text() )
+			);
+
+		/**
+		 * Original (HTML) version of the author's message
+		 * This can be scary sometimes (huge tables, black text on dark purple background etc).
+		 * @property {jQuery}
+		 */
+		this.$html = $( '<div>' )
+			.addClass( 'mw-mmv-permission-html' )
+			.appendTo( this.$box );
+
+		/**
+		 * "Close" button (does not actually close the box, just makes it smaller).
+		 * @property {jQuery}
+		 */
+		this.$close = $( '<button>' )
+			.addClass( 'mw-mmv-permission-close' )
+			.on( 'click', function () {
+				permission.shrink();
+			} )
+			.appendTo( this.$box );
+
+		/**
+		 * Panel scroller from the metadata panel object.
+		 * @property {mw.mmv.ui.MetadataPanelScroller}
+		 */
+		this.scroller = scroller;
+	}
+	oo.inheritClass( Permission, mw.mmv.ui.Element );
+	P = Permission.prototype;
+
+	/**
+	 * Clear everything
+	 */
+	P.empty = function () {
+		this.$box.addClass( 'empty' );
+		this.$text.empty();
+		this.$html.empty();
+	};
+
+	/**
+	 * Set permission text/html
+	 *
+	 * @param {string} permission the text or HTML code written by the image author
+	 */
+	P.set = function ( permission ) {
+		this.$box.removeClass( 'empty' );
+
+		this.$text.html( this.htmlUtils.htmlToTextWithLinks( permission ) );
+		this.$text.append( this.$fader );
+
+		this.$html.html( permission );
+	};
+
+	/**
+	 * Enlarge the box, show HTML instead of text.
+	 *
+	 * @fires mmv-permission-grow
+	 */
+	P.grow = function () {
+		mw.mmv.actionLogger.log( 'terms-open' );
+
+		this.$box.addClass( 'full-size' )
+			.stop( true )
+			.animate( { backgroundColor: '#FFFFA0' }, 500 )
+			.animate( { backgroundColor: '#FFFFFF' }, 500 );
+		this.$container.trigger( 'mmv-permission-grow' );
+	};
+
+	/**
+	 * Limit the size of the box, show text only.
+	 *
+	 * @fires mmv-permission-shrink
+	 */
+	P.shrink = function () {
+		this.$box.removeClass( 'full-size' );
+		this.$container.trigger( 'mmv-permission-shrink' );
+	};
+
+	/**
+	 * Returns whether the box is full-size.
+	 *
+	 * @return {boolean}
+	 */
+	P.isFullSize = function () {
+		return this.$box.hasClass( 'full-size' );
+	};
+
+	mw.mmv.ui.Permission = Permission;
+}( mediaWiki, jQuery, OO ) );