Vidalia 0.2.12
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00001 /* 00002 ** This file is part of Vidalia, and is subject to the license terms in the 00003 ** LICENSE file, found in the top level directory of this distribution. If you 00004 ** did not receive the LICENSE file with this file, you may obtain it from the 00005 ** Vidalia source package distributed by the Vidalia Project at 00006 ** http://www.vidalia-project.net/. No part of Vidalia, including this file, 00007 ** may be copied, modified, propagated, or distributed except according to the 00008 ** terms described in the LICENSE file. 00009 */ 00010 00011 /* 00012 ** \file HelpBrowser.h 00013 ** \brief Displays a list of help topics and content 00014 */ 00015 00016 #ifndef _HELPBROWSER_H 00017 #define _HELPBROWSER_H 00018 00019 #include "ui_HelpBrowser.h" 00020 #include "VidaliaWindow.h" 00021 00022 #include <QMainWindow> 00023 #include <QCloseEvent> 00024 #include <QDomDocument> 00025 #include <QDomElement> 00026 #include <QDomNodeList> 00027 #include <QTreeWidgetItem> 00028 #include <QTextBrowser> 00029 #include <QTextCursor> 00030 00031 00032 class HelpBrowser : public VidaliaWindow 00033 { 00034 Q_OBJECT 00035 00036 public: 00037 /** Default constructor **/ 00038 HelpBrowser(QWidget *parent = 0); 00039 00040 public slots: 00041 /** Overrides the default QWidget::show() */ 00042 void showWindow(QString topic = QString()); 00043 00044 protected: 00045 /** Called when the user changes the UI translation. */ 00046 virtual void retranslateUi(); 00047 00048 private slots: 00049 /** Called when the user clicks "Find Next" */ 00050 void findNext(); 00051 /** Called when the user clicks "Find Previous" */ 00052 void findPrev(); 00053 /** Called when the user starts a search */ 00054 void search(); 00055 /** Called when the user selects a different item in the contents tree */ 00056 void contentsItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *prev); 00057 /** Called when the user selects a different item in the search tree */ 00058 void searchItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *prev); 00059 00060 private: 00061 /** Returns the language in which help topics should appear, or English 00062 * ("en") if no translated help files exist for the current GUI language. */ 00063 QString language(); 00064 /** Load the contents of the help topics tree from the specified XML file. */ 00065 void loadContentsFromXml(QString xmlFile); 00066 /** Load the contents of the help topics tree from the given DOM document. */ 00067 bool loadContents(const QDomDocument *document, QString &errorString); 00068 /** Parse a Topic element and handle all its children. */ 00069 void parseHelpTopic(const QDomElement &element, QTreeWidgetItem *parent); 00070 /** Returns true if the given Topic element has the necessary attributes. */ 00071 bool isValidTopicElement(const QDomElement &topicElement); 00072 /** Builds a resource path to an html file associated with a help topic. */ 00073 QString getResourcePath(const QDomElement &topicElement); 00074 /** Searches the current page for the phrase in the Find box */ 00075 void find(bool forward); 00076 /** Creates a new item to be placed in the topic tree. */ 00077 QTreeWidgetItem* createTopicTreeItem(const QDomElement &topicElement, 00078 QTreeWidgetItem *parent); 00079 /** Called when the user selects a different item in the tree. */ 00080 void currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *prev); 00081 /** Finds a topic in the topic tree. */ 00082 QTreeWidgetItem* findTopicItem(QTreeWidgetItem *startItem, QString topic); 00083 /** Shows the help browser and finds a specific a topic in the browser. */ 00084 void showTopic(QString topic); 00085 00086 /** List of DOM elements representing topics. */ 00087 QList<QDomElement> _elementList; 00088 /** Last phrase used for 'Find' */ 00089 QString _lastFind; 00090 /** Last phrase searched on */ 00091 QString _lastSearch; 00092 /** Indicates if phrase was previously found on current page */ 00093 bool _foundBefore; 00094 00095 /** Qt Designer generated QObject */ 00096 Ui::HelpBrowser ui; 00097 }; 00098 00099 #endif 00100