Theme Editor: Added an edit menu with a find/replace function (copied from an LGPL library)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27137 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 153 insertions, 0 deletions

diff --git a/utils/themeeditor/findreplace/findreplaceform.h b/utils/themeeditor/findreplace/findreplaceform.h
new file mode 100644
index 0000000..f18052b
--- /dev/null
+++ b/utils/themeeditor/findreplace/findreplaceform.h
@@ -0,0 +1,153 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * This file has been copied from Lorenzo Bettini, with minor modifications
+ * made available under the LGPL version 3, as the original file was licensed
+ *
+ ****************************************************************************
+ *
+ * Copyright (C) 2009  Lorenzo Bettini <http://www.lorenzobettini.it>
+ * See COPYING file that comes with this distribution
+ */
+
+#ifndef FINDREPLACEFORM_H
+#define FINDREPLACEFORM_H
+
+#include <QWidget>
+#include <QTextCursor>
+#include <QPlainTextEdit>
+
+namespace Ui {
+    class FindReplaceForm;
+}
+
+class QTextEdit;
+class QSettings;
+
+/**
+  * The form for the find/replace dialog.  The form presents the typical
+  * widgets you find in standard find/replace dialogs, and it acts on a QTextEdit.
+  *
+  * \image html Screenshot-FindReplace.png
+  *
+  * You need to set the QTextEdit explicitly, using the method setTextEdit(QTextEdit *textEdit).
+  *
+  * For instance
+  * \code
+  * m_findReplaceDialog = new FindReplaceDialog(this);
+  * m_findReplaceDialog->setModal(false);
+  * m_findReplaceDialog->setTextEdit(ui->textEdit);
+  * \endcode
+  *
+  * The find functionalities is available even if the find dialog is not shown: if something
+  * to search for was already specified, the application can call the methods findNext() and
+  * findPrev() (e.g., by connecting them to menu items).
+  *
+  * In case a regular expression is used as the search term, the form also checks whether the
+  * expression is a valid regular expression (You may want to take a look at the syntax of regular expressions:
+  * http://doc.trolltech.com/qregexp.html).
+  *
+  * The form provides also functionalities to save and restore its state using a QSettings object (i.e.,
+  * the last word searched for, the options of the form, etc.) via the methods writeSettings()
+  * and readSettings().
+  *
+  * You can take a look at the \ref examples page.
+  */
+class FindReplaceForm : public QWidget {
+    Q_OBJECT
+public:
+    FindReplaceForm(QWidget *parent = 0);
+    virtual ~FindReplaceForm();
+
+    /**
+      * Associates the text editor where to perform the search
+      * @param textEdit_
+      */
+    void setTextEdit(QPlainTextEdit *textEdit_);
+
+    /// hides replace widgets from the form
+    void hideReplaceWidgets();
+
+    /**
+      * Writes the state of the form to the passed settings.
+      * @param settings
+      * @param prefix the prefix to insert in the settings
+      */
+    virtual void writeSettings(QSettings &settings, const QString &prefix = "FindReplaceDialog");
+
+    /**
+      * Reads the state of the form from the passed settings.
+      * @param settings
+      * @param prefix the prefix to look for in the settings
+      */
+    virtual void readSettings(QSettings &settings, const QString &prefix = "FindReplaceDialog");
+
+public slots:
+    /**
+     * performs the find task
+     * @param down whether to find the next or the previous
+     * occurrence
+     */
+    void find(bool down);
+
+    /**
+     * Finds the next occurrence
+     */
+    void find();
+
+    /**
+     * Finds the next occurrence
+     */
+    void findNext() { find(true); }
+
+    /**
+     * Finds the previous occurrence
+     */
+    void findPrev() { find(false); }
+
+    /**
+      * Replaces the found occurrences and goes to the next occurrence
+      */
+    void replace();
+
+    /**
+      * Replaces all the found occurrences
+      */
+    void replaceAll();
+
+protected:
+    void changeEvent(QEvent *e);
+
+    /// shows an error in the dialog
+    void showError(const QString &error);
+
+    /// shows a message in the dialog
+    void showMessage(const QString &message);
+
+protected slots:
+    /// when the text edit contents changed
+    void textToFindChanged();
+
+    /// checks whether the passed text is a valid regexp
+    void validateRegExp(const QString &text);
+
+    /// the regexp checkbox was selected
+    void regexpSelected(bool sel);
+
+protected:
+    Ui::FindReplaceForm *ui;
+
+    /// for searching into the text
+    QTextCursor textCursor;
+
+    /// the text editor (possibly) associated with this form
+    QPlainTextEdit *textEdit;
+};
+
+#endif // FINDREPLACEFORM_H