implement text search and replace functionality

tools/lammps-gui/CMakeLists.txt

@@ -130,6 +130,8 @@ set(PROJECT_SOURCES
   chartviewer.h
   codeeditor.cpp
   codeeditor.h
+  findandreplace.cpp
+  findandreplace.h
   helpers.cpp
   highlighter.cpp
   highlighter.h

tools/lammps-gui/findandreplace.cpp

@@ -0,0 +1,148 @@
+/* ----------------------------------------------------------------------
+   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
+   https://www.lammps.org/, Sandia National Laboratories
+   LAMMPS development team: developers@lammps.org
+
+   Copyright (2003) Sandia Corporation.  Under the terms of Contract
+   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
+   certain rights in this software.  This software is distributed under
+   the GNU General Public License.
+
+   See the README file in the top-level LAMMPS directory.
+------------------------------------------------------------------------- */
+
+#include "findandreplace.h"
+
+#include "codeeditor.h"
+#include "lammpsgui.h"
+
+#include <QApplication>
+#include <QCheckBox>
+#include <QDialogButtonBox>
+#include <QGridLayout>
+#include <QHBoxLayout>
+#include <QIcon>
+#include <QLabel>
+#include <QLineEdit>
+#include <QPushButton>
+#include <QShortcut>
+#include <QSizePolicy>
+#include <QTextCursor>
+
+/* ---------------------------------------------------------------------- */
+
+FindAndReplace::FindAndReplace(CodeEditor *_editor, QWidget *parent) :
+    QDialog(parent), editor(_editor), search(nullptr), replace(nullptr), withcase(nullptr),
+    wrap(nullptr), whole(nullptr)
+{
+    auto *layout  = new QGridLayout;
+    search        = new QLineEdit;
+    replace       = new QLineEdit;
+    withcase      = new QCheckBox("Match case");
+    wrap          = new QCheckBox("Wrap around");
+    whole         = new QCheckBox("Whole word");
+    auto *next    = new QPushButton("Next");
+    auto *replone = new QPushButton("Replace");
+    auto *replall = new QPushButton("Replace All");
+    auto *done    = new QPushButton("Done");
+
+    layout->addWidget(new QLabel("Find:"), 0, 0, Qt::AlignRight);
+    layout->addWidget(search, 0, 1, 1, 2, Qt::AlignLeft);
+    layout->addWidget(new QLabel("Replace with:"), 1, 0, Qt::AlignRight);
+    layout->addWidget(replace, 1, 1, 1, 2, Qt::AlignLeft);
+    layout->addWidget(withcase, 2, 0, Qt::AlignLeft);
+    layout->addWidget(wrap, 2, 1, Qt::AlignLeft);
+    layout->addWidget(whole, 2, 2, Qt::AlignLeft);
+    wrap->setChecked(true);
+
+    auto *buttons = new QHBoxLayout;
+    buttons->addWidget(next);
+    buttons->addWidget(replone);
+    buttons->addWidget(replall);
+    buttons->addWidget(done);
+    layout->addLayout(buttons, 3, 0, 1, 3, Qt::AlignHCenter);
+
+    connect(next, &QPushButton::released, this, &FindAndReplace::find_next);
+    connect(replone, &QPushButton::released, this, &FindAndReplace::replace_next);
+    connect(replall, &QPushButton::released, this, &FindAndReplace::replace_all);
+    connect(done, &QPushButton::released, this, &QDialog::accept);
+
+    auto action = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
+    connect(action, &QShortcut::activated, this, &FindAndReplace::quit);
+
+    setLayout(layout);
+    setWindowIcon(QIcon(":/icons/lammps-icon-128x128.png"));
+    setWindowTitle("LAMMPS-GUI - Find and Replace");
+}
+
+/* ---------------------------------------------------------------------- */
+
+void FindAndReplace::find_next()
+{
+    auto text = search->text();
+
+    int find_flags = 0;
+    if (withcase->isChecked()) find_flags |= QTextDocument::FindCaseSensitively;
+    if (whole->isChecked()) find_flags |= QTextDocument::FindWholeWords;
+
+    if (!text.isEmpty()) {
+        if (!editor->find(text, (QTextDocument::FindFlag)find_flags) && wrap->isChecked()) {
+            // nothing found from the current position to the end, reposition cursor and beginning
+            editor->moveCursor(QTextCursor::Start, QTextCursor::MoveAnchor);
+            editor->find(text, (QTextDocument::FindFlag)find_flags);
+        }
+    }
+}
+
+/* ---------------------------------------------------------------------- */
+
+void FindAndReplace::replace_next()
+{
+    auto text = search->text();
+    if (text.isEmpty()) return;
+
+    auto cursor = editor->textCursor();
+    auto flag   = withcase->isChecked() ? Qt::CaseSensitive : Qt::CaseInsensitive;
+
+    // if selected text at cursor location matches search text, replace
+    if (QString::compare(cursor.selectedText(), search->text(), flag) == 0)
+        cursor.insertText(replace->text());
+
+    find_next();
+}
+
+/* ---------------------------------------------------------------------- */
+
+void FindAndReplace::replace_all()
+{
+    auto text = search->text();
+    if (text.isEmpty()) return;
+
+    // drop selection if we have one
+    auto cursor = editor->textCursor();
+    if (cursor.hasSelection()) cursor.movePosition(QTextCursor::Left);
+
+    find_next();
+    cursor = editor->textCursor();
+
+    // keep replacing until find_next() does not find anything anymore
+    while (cursor.hasSelection()) {
+        cursor.insertText(replace->text());
+        find_next();
+        cursor = editor->textCursor();
+    }
+}
+
+/* ---------------------------------------------------------------------- */
+
+void FindAndReplace::quit()
+{
+    LammpsGui *main = nullptr;
+    for (QWidget *widget : QApplication::topLevelWidgets())
+        if (widget->objectName() == "LammpsGui") main = dynamic_cast<LammpsGui *>(widget);
+    if (main) main->quit();
+}
+
+// Local Variables:
+// c-basic-offset: 4
+// End:

tools/lammps-gui/findandreplace.h

@@ -0,0 +1,46 @@
+/* -*- c++ -*- ----------------------------------------------------------
+   LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
+   https://www.lammps.org/, Sandia National Laboratories
+   LAMMPS development team: developers@lammps.org
+
+   Copyright (2003) Sandia Corporation.  Under the terms of Contract
+   DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
+   certain rights in this software.  This software is distributed under
+   the GNU General Public License.
+
+   See the README file in the top-level LAMMPS directory.
+------------------------------------------------------------------------- */
+
+#ifndef FIND_AND_REPLACE_H
+#define FIND_AND_REPLACE_H
+
+#include "codeeditor.h"
+#include <QDialog>
+
+class QLineEdit;
+class QCheckBox;
+
+class FindAndReplace : public QDialog {
+    Q_OBJECT
+
+public:
+    explicit FindAndReplace(CodeEditor *_editor, QWidget *parent = nullptr);
+    ~FindAndReplace() = default;
+
+private slots:
+    void find_next();
+    void replace_next();
+    void replace_all();
+    void quit();
+
+private:
+    CodeEditor *editor;
+    QLineEdit *search, *replace;
+    QCheckBox *withcase, *wrap, *whole;
+};
+
+#endif
+
+// Local Variables:
+// c-basic-offset: 4
+// End:

tools/lammps-gui/imageviewer.h

@@ -34,7 +34,8 @@ class ImageViewer : public QDialog {
     Q_OBJECT
 
 public:
-    explicit ImageViewer(const QString &fileName, LammpsWrapper *_lammps, QWidget *parent = nullptr);
+    explicit ImageViewer(const QString &fileName, LammpsWrapper *_lammps,
+                         QWidget *parent = nullptr);
 
 private slots:
     void saveAs();

tools/lammps-gui/lammps-gui.appdata.xml

@@ -58,7 +58,7 @@
       <description>
         Added search and replace functionality.
         Converged command line argument parsing using Qt facilities
-        Dark mode compatible
+        Added dark mode adjustments
       </description>
     </release>
     <release version="1.6.8" timestamp="1723581926">

tools/lammps-gui/lammpsgui.cpp

@@ -15,6 +15,7 @@
 
 #include "chartviewer.h"
 #include "fileviewer.h"
+#include "findandreplace.h"
 #include "helpers.h"
 #include "highlighter.h"
 #include "imageviewer.h"
@@ -206,6 +207,7 @@ LammpsGui::LammpsGui(QWidget *parent, const char *filename) :
     connect(ui->actionPaste, &QAction::triggered, this, &LammpsGui::paste);
     connect(ui->actionUndo, &QAction::triggered, this, &LammpsGui::undo);
     connect(ui->actionRedo, &QAction::triggered, this, &LammpsGui::redo);
+    connect(ui->actionSearchAndReplace, &QAction::triggered, this, &LammpsGui::findandreplace);
     connect(ui->actionRun_Buffer, &QAction::triggered, this, &LammpsGui::run_buffer);
     connect(ui->actionRun_File, &QAction::triggered, this, &LammpsGui::run_file);
     connect(ui->actionStop_LAMMPS, &QAction::triggered, this, &LammpsGui::stop_run);
@@ -1863,6 +1865,14 @@ void LammpsGui::edit_variables()
     }
 }
 
+void LammpsGui::findandreplace()
+{
+    FindAndReplace find(ui->textEdit, this);
+    find.setFont(font());
+    find.setObjectName("find");
+    find.exec();
+}
+
 void LammpsGui::preferences()
 {
     QSettings settings;

tools/lammps-gui/lammpsgui.h

@@ -115,6 +115,7 @@ private slots:
     void paste();
     void undo();
     void redo();
+    void findandreplace();
     void run_buffer() { do_run(true); }
     void run_file() { do_run(false); }
 

tools/lammps-gui/lammpsgui.qrc

@@ -58,6 +58,7 @@
     <file>icons/preferences-desktop.png</file>
     <file>icons/process-stop.png</file>
     <file>icons/run-file.png</file>
+    <file>icons/search.png</file>
     <file>icons/system-box.png</file>
     <file>icons/system-help.png</file>
     <file>icons/system-run.png</file>

tools/lammps-gui/lammpsgui.ui

@@ -62,6 +62,8 @@
     <addaction name="actionCut"/>
     <addaction name="actionPaste"/>
     <addaction name="separator"/>
+    <addaction name="actionSearchAndReplace"/>
+    <addaction name="separator"/>
     <addaction name="actionPreferences"/>
     <addaction name="actionDefaults"/>
    </widget>
@@ -312,12 +314,23 @@
     <string>Ctrl+Shift+H</string>
    </property>
   </action>
+  <action name="actionSearchAndReplace">
+   <property name="icon">
+    <iconset theme=":/icons/search.png"/>
+   </property>
+   <property name="text">
+    <string>&amp;Find and Replace...</string>
+   </property>
+   <property name="shortcut">
+    <string>Ctrl+F</string>
+   </property>
+  </action>
   <action name="actionPreferences">
    <property name="icon">
     <iconset theme=":/icons/preferences-desktop.png"/>
    </property>
    <property name="text">
-    <string>Pre&amp;ferences...</string>
+    <string>P&amp;references...</string>
    </property>
    <property name="shortcut">
     <string>Ctrl+P</string>