feat: improve search in document

- add a new interface for searching into document view
- move the textdocument search to this new interface
- implement the interface for QtUiDocument and QtTsDocument

Related to #25

src/gui/CMakeLists.txt

@@ -20,6 +20,7 @@ set(PROJECT_SOURCES
     documentpalette.cpp
     fileselector.h
     fileselector.cpp
+    findinterface.h
     findwidget.h
     findinfilespanel.cpp
     findinfilespanel.h
@@ -28,6 +29,8 @@ set(PROJECT_SOURCES
     gui_constants.h
     guisettings.h
     guisettings.cpp
+    highlightdelegate.h
+    highlightdelegate.cpp
     historypanel.h
     historypanel.cpp
     imageview.h
@@ -68,6 +71,8 @@ set(PROJECT_SOURCES
     scriptpanel.cpp
     scriptlistpanel.cpp
     scriptlistpanel.h
+    searchabletableview.h
+    searchabletableview.cpp
     shortcutmanager.h
     shortcutmanager.cpp
     shortcutsettings.h

src/gui/findinterface.h

@@ -0,0 +1,51 @@
+/*
+  This file is part of Knut.
+
+  SPDX-FileCopyrightText: 2024 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
+
+  SPDX-License-Identifier: GPL-3.0-only
+
+  Contact KDAB at <info@kdab.com> for commercial licensing options.
+*/
+
+#pragma once
+
+#include <QString>
+
+namespace Gui {
+
+/**
+ * @brief Find interface to handle find and replace in views.
+ */
+class FindInterface
+{
+public:
+    enum FindFlag {
+        NoFind = 0x0,
+        CanSearch = 0x1,
+        CanReplace = 0x2,
+    };
+    FindInterface(int flags)
+        : m_findFlags(flags) {};
+
+    int findFlags() const { return m_findFlags; }
+
+    virtual void find(const QString &text, int options)
+    {
+        Q_UNUSED(text);
+        Q_UNUSED(options);
+    };
+    virtual void cancelFind() {};
+    virtual void replace(const QString &before, const QString &after, int options, bool replaceAll)
+    {
+        Q_UNUSED(before);
+        Q_UNUSED(after);
+        Q_UNUSED(options);
+        Q_UNUSED(replaceAll);
+    };
+
+private:
+    int m_findFlags = NoFind;
+};
+
+} // namespace Gui

src/gui/findwidget.cpp

@@ -11,8 +11,12 @@
 #include "findwidget.h"
 #include "core/logger.h"
 #include "core/project.h"
+#include "core/qttsdocument.h"
+#include "core/qtuidocument.h"
 #include "core/textdocument.h"
 #include "guisettings.h"
+#include "qttsview.h"
+#include "qtuiview.h"
 #include "ui_findwidget.h"
 
 #include <QAction>
@@ -122,35 +126,42 @@ void FindWidget::find(int options)
 {
     if (ui->findEdit->text().isEmpty())
         return;
-    auto document = Core::Project::instance()->currentDocument();
-    if (auto textDocument = qobject_cast<Core::TextDocument *>(document))
-        textDocument->find(findString(), options);
+    Q_EMIT findRequested(ui->findEdit->text(), options);
 }
 
 void FindWidget::replaceOne()
 {
-    replace(true);
+    replace(false);
 }
 
 void FindWidget::replaceAll()
 {
-    replace(false);
+    replace(true);
 }
 
-void FindWidget::replace(bool onlyOne)
+void FindWidget::replace(bool replaceAll)
 {
     const QString &before = findString();
     const QString &after = ui->replaceEdit->text();
     if (before.isEmpty())
         return;
 
-    auto document = Core::Project::instance()->currentDocument();
-    if (auto textDocument = qobject_cast<Core::TextDocument *>(document)) {
-        if (onlyOne)
-            textDocument->replaceOne(before, after, findFlags());
-        else
-            textDocument->replaceAll(before, after, findFlags());
-    }
+    Q_EMIT replaceRequested(before, after, findFlags(), replaceAll);
+}
+
+void FindWidget::hideEvent(QHideEvent *event)
+{
+    Q_EMIT widgetClosed();
+    QWidget::hideEvent(event);
+}
+
+void FindWidget::setReplaceVisible(bool show)
+{
+    // We don't want to use a wrapping frame here due to layouting issues...
+    ui->replaceWithLabel->setVisible(show);
+    ui->replaceEdit->setVisible(show);
+    ui->replaceAllbutton->setVisible(show);
+    ui->replaceButton->setVisible(show);
 }
 
 } // namespace Gui

src/gui/findwidget.h

@@ -31,14 +31,24 @@ class FindWidget : public QWidget
 
     void open();
 
+    void setReplaceVisible(bool show = true);
+
+signals:
+    void findRequested(const QString &text, int options);
+    void replaceRequested(const QString &before, const QString &after, int options, bool replaceAll);
+    void widgetClosed();
+
+protected:
+    void hideEvent(QHideEvent *event) override;
+
 private:
     int findFlags() const;
     QString findString();
 
     void find(int options);
     void replaceOne();
     void replaceAll();
-    void replace(bool onlyOne);
+    void replace(bool replaceAll);
 
     std::unique_ptr<Ui::FindWidget> ui;
     QAction *m_matchCase = nullptr;

src/gui/findwidget.ui

@@ -102,7 +102,7 @@
       </widget>
      </item>
      <item>
-      <spacer name="horizontalSpacer_2">
+      <spacer name="replaceSpacer">
        <property name="orientation">
         <enum>Qt::Horizontal</enum>
        </property>
@@ -117,14 +117,14 @@
     </layout>
    </item>
    <item row="1" column="0">
-    <widget class="QLabel" name="label_2">
+    <widget class="QLabel" name="replaceWithLabel">
      <property name="text">
       <string>Replace with:</string>
      </property>
     </widget>
    </item>
    <item row="0" column="0">
-    <widget class="QLabel" name="label">
+    <widget class="QLabel" name="findLabel">
      <property name="text">
       <string>Find:</string>
      </property>

src/gui/highlightdelegate.cpp

@@ -0,0 +1,86 @@
+/*
+  This file is part of Knut.
+
+  SPDX-FileCopyrightText: 2024 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
+
+  SPDX-License-Identifier: GPL-3.0-only
+
+  Contact KDAB at <info@kdab.com> for commercial licensing options.
+*/
+
+#include "highlightdelegate.h"
+#include "core/textdocument.h"
+
+#include <QAbstractTextDocumentLayout>
+#include <QPainter>
+#include <QTextDocument>
+
+namespace Gui {
+
+HighlightDelegate::HighlightDelegate(QObject *parent)
+    : QItemDelegate(parent)
+{
+}
+
+void HighlightDelegate::setHighlightedText(const QString &searchText, int options)
+{
+    m_highlightedText = searchText;
+    m_options = options;
+}
+
+QString HighlightDelegate::transform(QString text, const QString &textColor, const QString &backgroundColor) const
+{
+    if (m_highlightedText.isEmpty())
+        return text;
+
+    if (m_options & Core::TextDocument::FindRegexp) {
+        const auto re = QRegularExpression {m_highlightedText};
+        QRegularExpressionMatch match;
+        int index = text.indexOf(re, 0, &match);
+        while (index != -1) {
+            const auto oldText = match.captured(0);
+            const auto newText = QString("<span style='color: %1; background-color: %2;'>%3</span>")
+                                     .arg(textColor, backgroundColor, oldText);
+            text.replace(index, oldText.size(), newText);
+            index = text.indexOf(re, index + newText.size(), &match);
+        }
+    } else {
+        const bool caseSensitive = m_options & Core::TextDocument::FindCaseSensitively;
+        int index = text.indexOf(m_highlightedText, 0, caseSensitive ? Qt::CaseSensitive : Qt::CaseInsensitive);
+        while (index != -1) {
+            const auto oldText = text.mid(index, m_highlightedText.size());
+            const auto newText = QString("<span style='color: %1; background-color: %2;'>%3</span>")
+                                     .arg(textColor, backgroundColor, oldText);
+            text.replace(index, oldText.size(), newText);
+            index = text.indexOf(m_highlightedText, index + newText.size(),
+                                 caseSensitive ? Qt::CaseSensitive : Qt::CaseInsensitive);
+        }
+    }
+    return text;
+}
+
+void HighlightDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
+{
+    const auto textColor = option.palette.color(QPalette::HighlightedText).name();
+    const auto backgroundColor = option.palette.color(QPalette::Highlight).name();
+
+    // Display the text with the search string highlighted.
+    QString text = transform(index.data(Qt::DisplayRole).toString(), textColor, backgroundColor);
+    QTextDocument doc;
+    doc.setHtml(text);
+
+    painter->save();
+
+    // Adjust the painter's transformation to fit the text within the given rectangle
+    painter->translate(option.rect.topLeft());
+    QRect clip(0, 0, option.rect.width(), option.rect.height());
+    doc.setTextWidth(option.rect.width());
+
+    QAbstractTextDocumentLayout::PaintContext ctx;
+    ctx.clip = clip;
+    doc.documentLayout()->draw(painter, ctx);
+
+    painter->restore();
+}
+
+} // namespace Gui

src/gui/highlightdelegate.h

@@ -0,0 +1,35 @@
+/*
+  This file is part of Knut.
+
+  SPDX-FileCopyrightText: 2024 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
+
+  SPDX-License-Identifier: GPL-3.0-only
+
+  Contact KDAB at <info@kdab.com> for commercial licensing options.
+*/
+
+#pragma once
+
+#include <QItemDelegate>
+
+namespace Gui {
+
+class HighlightDelegate : public QItemDelegate
+{
+    Q_OBJECT
+
+public:
+    explicit HighlightDelegate(QObject *parent = nullptr);
+
+    void setHighlightedText(const QString &searchText, int options);
+
+protected:
+    QString transform(QString text, const QString &textColor, const QString &backgroundColor) const;
+    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override;
+
+private:
+    QString m_highlightedText;
+    int m_options;
+};
+
+} // namespace Gui