677 lines
24 KiB
C++
677 lines
24 KiB
C++
/*
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* SPDX-License-Identifier: LGPL-2.0-or-later
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*/
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#include "ollieplugin.h"
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#include "palettewidget.h"
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#include "radialmenu.h"
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#include "radialconfig.h"
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#include <KTextEditor/MainWindow>
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#include <KTextEditor/View>
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#include <KTextEditor/Document>
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#include <KActionCollection>
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#include <KXMLGUIClient>
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#include <KXMLGUIFactory>
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#include <KLocalizedString>
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#include <KPluginFactory>
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#include <QAction>
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#include <QApplication>
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#include <QEvent>
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#include <QHash>
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#include <QKeySequence>
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#include <QMouseEvent>
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#include <QSet>
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#include <QWidget>
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namespace katecustom
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{
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namespace
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{
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// Bracket pairs understood by the double-click selection feature.
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QChar matchingBracket(QChar c, bool &isOpener)
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{
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switch (c.unicode()) {
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case '(': isOpener = true; return QLatin1Char(')');
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case '[': isOpener = true; return QLatin1Char(']');
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case '{': isOpener = true; return QLatin1Char('}');
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case ')': isOpener = false; return QLatin1Char('(');
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case ']': isOpener = false; return QLatin1Char('[');
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case '}': isOpener = false; return QLatin1Char('{');
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default: isOpener = false; return QChar();
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}
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}
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// Advance a cursor by one character, wrapping across line ends. Returns false
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// at end of document.
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bool stepForward(KTextEditor::Document *doc, KTextEditor::Cursor &c)
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{
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if (c.column() < doc->lineLength(c.line())) {
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c.setColumn(c.column() + 1);
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} else if (c.line() < doc->documentEnd().line()) {
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c.setLine(c.line() + 1);
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c.setColumn(0);
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} else {
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return false;
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}
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return true;
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}
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// Retreat a cursor by one character, wrapping across line starts. Returns false
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// at start of document.
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bool stepBackward(KTextEditor::Document *doc, KTextEditor::Cursor &c)
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{
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if (c.column() > 0) {
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c.setColumn(c.column() - 1);
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} else if (c.line() > 0) {
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c.setLine(c.line() - 1);
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c.setColumn(doc->lineLength(c.line()));
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} else {
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return false;
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}
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return true;
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}
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// Scan forward from the position just after an opener for its matching closer,
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// honouring nesting. \a pos must point at the first char after the opener.
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// Returns the closer's cursor, or an invalid cursor if unbalanced.
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KTextEditor::Cursor findCloser(KTextEditor::Document *doc, KTextEditor::Cursor pos,
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QChar opener, QChar closer)
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{
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int depth = 1;
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while (true) {
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const QChar ch = doc->characterAt(pos);
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if (ch == opener) {
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++depth;
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} else if (ch == closer) {
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if (--depth == 0) {
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return pos;
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}
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}
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if (!stepForward(doc, pos)) {
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break;
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}
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}
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return KTextEditor::Cursor::invalid();
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}
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// Scan backward from the position just before a closer for its matching opener.
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// \a pos must point at the char immediately before the closer.
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KTextEditor::Cursor findOpener(KTextEditor::Document *doc, KTextEditor::Cursor pos,
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QChar closer, QChar opener)
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{
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int depth = 1;
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while (true) {
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const QChar ch = doc->characterAt(pos);
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if (ch == closer) {
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++depth;
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} else if (ch == opener) {
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if (--depth == 0) {
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return pos;
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}
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}
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if (!stepBackward(doc, pos)) {
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break;
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}
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}
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return KTextEditor::Cursor::invalid();
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}
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} // namespace
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// ---------------------------------------------------------------------------
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// OlliePlugin
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// ---------------------------------------------------------------------------
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OlliePlugin::OlliePlugin(QObject *parent, const QVariantList &args)
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: KTextEditor::Plugin(parent)
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{
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Q_UNUSED(args);
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}
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OlliePlugin::~OlliePlugin() = default;
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QObject *OlliePlugin::createView(KTextEditor::MainWindow *mainWindow)
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{
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return new OllieView(this, mainWindow);
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}
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// ---------------------------------------------------------------------------
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// OllieView
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// ---------------------------------------------------------------------------
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OllieView::OllieView(OlliePlugin *plugin, KTextEditor::MainWindow *mainWindow)
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: QObject(plugin)
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, m_mainWindow(mainWindow)
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{
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// The one keyboard door: Alt+X (M-x). A single modifier, no chord, and the
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// keys sit together on a compact layout.
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auto *openAction = new QAction(i18n("Command Palette (M-x)"), this);
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openAction->setObjectName(QStringLiteral("ollie_command_palette"));
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openAction->setShortcut(QKeySequence(Qt::ALT | Qt::Key_X));
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openAction->setShortcutContext(Qt::ApplicationShortcut);
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connect(openAction, &QAction::triggered, this, &OllieView::showCommandPalette);
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// Attach the shortcut to the window so it is always live.
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if (QWidget *w = m_mainWindow->window()) {
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w->addAction(openAction);
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}
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setupRadials();
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// One application-wide filter serves both the mouse-button radial gesture
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// and the Acme-style left+middle chord, catching presses no matter which
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// internal child of the view actually receives them.
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qApp->installEventFilter(this);
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}
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OllieView::~OllieView()
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{
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delete m_palette;
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delete m_radial;
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}
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QList<OllieView::ActionEntry> OllieView::collectActions() const
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{
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QList<ActionEntry> entries;
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KXMLGUIFactory *factory = m_mainWindow->guiFactory();
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if (!factory) {
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return entries;
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}
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// Dedup by pointer identity: the same QAction is frequently reachable
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// through several GUI clients. Those are true duplicates and must appear
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// only once.
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QSet<QAction *> seen;
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const QList<KXMLGUIClient *> clients = factory->clients();
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for (KXMLGUIClient *client : clients) {
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KActionCollection *coll = client->actionCollection();
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if (!coll) {
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continue;
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}
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const QString component = coll->componentDisplayName();
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const QList<QAction *> actions = coll->actions();
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for (QAction *action : actions) {
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if (!action || action->isSeparator()) {
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continue;
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}
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if (seen.contains(action)) {
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continue;
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}
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// Only offer things the user could actually invoke now.
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if (!action->isEnabled() || !action->isVisible()) {
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continue;
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}
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const QString label = action->text().remove(QLatin1Char('&')).trimmed();
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if (label.isEmpty()) {
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continue;
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}
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seen.insert(action);
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ActionEntry e;
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e.action = action;
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e.label = label;
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e.component = component;
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e.shortcut = action->shortcut().toString(QKeySequence::NativeText);
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entries.push_back(e);
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}
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}
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// Distinct actions can share a visible label (e.g. different plugins each
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// offering "Reload"). These are NOT duplicates — never drop them. Instead
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// guarantee every visible row is distinguishable by enriching colliding
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// labels through a fallback chain of discriminators, and give each entry a
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// unique id so activation always triggers the intended action.
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QHash<QString, int> labelCounts;
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for (const ActionEntry &e : entries) {
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++labelCounts[e.label];
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}
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// First pass: for any shared label, append the strongest discriminator
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// available (component, else objectName, else shortcut).
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for (ActionEntry &e : entries) {
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if (labelCounts.value(e.label) <= 1) {
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continue;
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}
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const QString objName = e.action ? e.action->objectName() : QString();
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QString disc;
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if (!e.component.isEmpty()) {
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disc = e.component;
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} else if (!objName.isEmpty()) {
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disc = objName;
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} else if (!e.shortcut.isEmpty()) {
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disc = e.shortcut;
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}
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if (!disc.isEmpty()) {
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e.label = e.label + QStringLiteral(" — ") + disc;
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}
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}
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// Second pass: if any labels are STILL identical (same label and same
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// discriminator), append objectName/shortcut, then a numeric suffix, so no
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// two rows ever look the same.
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QHash<QString, int> stillColliding;
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for (const ActionEntry &e : entries) {
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++stillColliding[e.label];
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}
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QHash<QString, int> dupSeq;
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for (ActionEntry &e : entries) {
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if (stillColliding.value(e.label) <= 1) {
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continue;
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}
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const QString objName = e.action ? e.action->objectName() : QString();
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if (!objName.isEmpty() && !e.label.contains(objName)) {
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e.label += QStringLiteral(" [") + objName + QLatin1Char(']');
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} else if (!e.shortcut.isEmpty() && !e.label.contains(e.shortcut)) {
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e.label += QStringLiteral(" (") + e.shortcut + QLatin1Char(')');
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} else {
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// Last resort: number the indistinguishable rows 1..n.
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const int n = ++dupSeq[e.label];
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e.label += QStringLiteral(" (") + QString::number(n) + QLatin1Char(')');
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}
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}
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// Assign unique, reasonably stable ids (independent of the display label).
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QHash<QString, int> idSeq;
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for (ActionEntry &e : entries) {
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const QString objName = e.action ? e.action->objectName() : QString();
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QString base = e.component;
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if (!base.isEmpty()) {
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base += QLatin1Char('/');
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}
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base += objName.isEmpty() ? e.label : objName;
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// Guarantee uniqueness even if base still collides.
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const int n = idSeq[base]++;
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e.id = (n == 0) ? base : base + QStringLiteral("#") + QString::number(n);
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}
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return entries;
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}
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void OllieView::showCommandPalette()
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{
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if (!m_palette) {
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m_palette = new PaletteWidget(m_mainWindow->window());
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connect(m_palette, &PaletteWidget::activatedId, this, &OllieView::runAction);
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}
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const QList<ActionEntry> entries = collectActions();
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m_actionsById.clear();
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QList<PaletteItem> items;
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items.reserve(entries.size());
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for (const ActionEntry &e : entries) {
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m_actionsById.insert(e.id, e.action);
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PaletteItem item;
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item.id = e.id;
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item.label = e.label;
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item.group = e.shortcut; // shortcut shown as the trailing hint
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items.push_back(item);
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}
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m_palette->setItems(items);
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// Center the palette near the top of the active window.
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if (QWidget *w = m_mainWindow->window()) {
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const QSize sz = m_palette->size();
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const QPoint topLeft = w->mapToGlobal(QPoint((w->width() - sz.width()) / 2,
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w->height() / 6));
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m_palette->move(topLeft);
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}
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m_palette->activate();
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}
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void OllieView::runAction(const QString &actionId)
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{
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QPointer<QAction> action = m_actionsById.value(actionId);
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if (action) {
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action->trigger();
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}
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}
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QAction *OllieView::findActionByName(const QString &nameOrText) const
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{
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KXMLGUIFactory *factory = m_mainWindow->guiFactory();
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if (!factory || nameOrText.isEmpty()) {
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return nullptr;
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}
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const QList<KXMLGUIClient *> clients = factory->clients();
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// First pass: exact objectName match (fast, unambiguous).
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for (KXMLGUIClient *client : clients) {
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if (KActionCollection *coll = client->actionCollection()) {
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if (QAction *a = coll->action(nameOrText)) {
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return a;
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}
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}
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}
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// Fallback: match by visible text, case-insensitively. Keeps radial slices
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// working when a Kate action's objectName differs from our config id across
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// versions (we can reference it by its menu label instead).
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const QString wanted = nameOrText.trimmed();
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for (KXMLGUIClient *client : clients) {
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KActionCollection *coll = client->actionCollection();
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if (!coll) {
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continue;
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}
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const QList<QAction *> actions = coll->actions();
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for (QAction *a : actions) {
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if (!a) {
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continue;
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}
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const QString text = a->text().remove(QLatin1Char('&')).trimmed();
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if (text.compare(wanted, Qt::CaseInsensitive) == 0) {
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return a;
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}
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}
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}
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return nullptr;
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}
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void OllieView::setupRadials()
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{
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// User config could be loaded here later; for now ship the built-in set.
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m_radialDefs = RadialConfig::builtinDefault();
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QWidget *w = m_mainWindow->window();
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for (int i = 0; i < m_radialDefs.size(); ++i) {
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const RadialDef &def = m_radialDefs.at(i);
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// Key trigger (weapon-wheel style).
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if (!def.trigger.isEmpty()) {
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auto *trigger = new QAction(this);
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trigger->setObjectName(QStringLiteral("ollie_radial_") + def.name);
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trigger->setText(i18n("Radial Menu: %1", def.name));
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trigger->setShortcut(QKeySequence(def.trigger));
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trigger->setShortcutContext(Qt::ApplicationShortcut);
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connect(trigger, &QAction::triggered, this, [this, i]() { showRadial(i); });
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if (w) {
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w->addAction(trigger);
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}
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}
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// Mouse-button gesture (the natural radial trigger).
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if (!def.mouseButton.isEmpty()) {
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Qt::MouseButton btn = Qt::NoButton;
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if (def.mouseButton == QLatin1String("RightButton")) {
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btn = Qt::RightButton;
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} else if (def.mouseButton == QLatin1String("MiddleButton")) {
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btn = Qt::MiddleButton;
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}
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if (btn != Qt::NoButton) {
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m_buttonToRadial.insert(static_cast<int>(btn), i);
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}
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}
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}
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}
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bool OllieView::selectBracketPairAt(KTextEditor::View *view, const QPoint &globalPos)
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{
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if (!view) {
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return false;
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}
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KTextEditor::Document *doc = view->document();
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if (!doc) {
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return false;
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}
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const QPoint local = view->mapFromGlobal(globalPos);
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const KTextEditor::Cursor at = view->coordinatesToCursor(local);
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if (!at.isValid()) {
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return false;
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}
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// Characters immediately to the right and left of the click position.
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const QChar rightCh = doc->characterAt(at);
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KTextEditor::Cursor leftCur = at;
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const bool haveLeft = stepBackward(doc, leftCur);
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const QChar leftCh = haveLeft ? doc->characterAt(leftCur) : QChar();
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bool rOpener = false;
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const QChar rMatch = matchingBracket(rightCh, rOpener);
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bool lOpener = false;
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const QChar lMatch = matchingBracket(leftCh, lOpener);
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KTextEditor::Cursor opener = KTextEditor::Cursor::invalid();
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KTextEditor::Cursor closer = KTextEditor::Cursor::invalid();
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// Prefer an opener to the right (select its contents forward), then a closer
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// to the left (select its contents backward), then the remaining adjacency
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// cases. "Everything between" excludes the bracket characters themselves.
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if (!rMatch.isNull() && rOpener) {
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KTextEditor::Cursor after = at;
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if (stepForward(doc, after)) {
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opener = at;
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closer = findCloser(doc, after, rightCh, rMatch);
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}
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} else if (!lMatch.isNull() && !lOpener) {
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KTextEditor::Cursor before = leftCur;
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if (stepBackward(doc, before)) {
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closer = leftCur;
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opener = findOpener(doc, before, leftCh, lMatch);
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}
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} else if (!rMatch.isNull() && !rOpener) {
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// Closer to the right: match backward from just before it.
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KTextEditor::Cursor before = at;
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if (stepBackward(doc, before)) {
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closer = at;
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opener = findOpener(doc, before, rightCh, rMatch);
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}
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} else if (!lMatch.isNull() && lOpener) {
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// Opener to the left: match forward from the click position.
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opener = leftCur;
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closer = findCloser(doc, at, leftCh, lMatch);
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} else {
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return false; // no bracket adjacent — let Kate's default run
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}
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if (!opener.isValid() || !closer.isValid()) {
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return false;
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}
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// Select the content strictly between the pair. The inner range starts just
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// after the opener and ends at the closer.
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KTextEditor::Cursor innerStart = opener;
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if (!stepForward(doc, innerStart)) {
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return false;
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}
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const KTextEditor::Range inner(innerStart, closer);
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view->setSelection(inner);
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view->setCursorPosition(closer);
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return true;
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}
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bool OllieView::eventFilter(QObject *obj, QEvent *event)
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{
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// Bracket-pair selection: double-clicking next to a bracket selects the
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// text between the matching pair (multi-line). Falls through to Kate's
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// default double-click (word select) when no bracket is adjacent. The
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// second click of a double-click arrives as DblClick (not a plain press)
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// and leaves the left button held, so it also arms the chord anchor —
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// letting the user go straight from a double-click into a mouse chord.
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if (event->type() == QEvent::MouseButtonDblClick) {
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auto *mev = static_cast<QMouseEvent *>(event);
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if (mev->button() == Qt::LeftButton) {
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KTextEditor::View *v = m_mainWindow->activeView();
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auto *w = qobject_cast<QWidget *>(obj);
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const bool inView = v && w && v->isAncestorOf(w);
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if (inView) {
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m_leftDownInView = true; // held after the dblclick: chord anchor
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if (selectBracketPairAt(v, mev->globalPosition().toPoint())) {
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return true; // handled: suppress default word-select
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}
|
|
}
|
|
}
|
|
}
|
|
|
|
// While a drag gesture is active, drive the radial directly from the raw
|
|
// events: the opening press leaves an implicit grab on the editor view, so
|
|
// the live move/release events are delivered there, and this application
|
|
// filter is the one place that reliably sees them.
|
|
if (m_gestureActive) {
|
|
switch (event->type()) {
|
|
case QEvent::MouseMove:
|
|
if (m_radial) {
|
|
m_radial->driveHoverGlobal(
|
|
static_cast<QMouseEvent *>(event)->globalPosition().toPoint());
|
|
}
|
|
return true;
|
|
case QEvent::MouseButtonRelease:
|
|
m_gestureActive = false;
|
|
if (m_radial) {
|
|
m_radial->driveReleaseGlobal(
|
|
static_cast<QMouseEvent *>(event)->globalPosition().toPoint());
|
|
}
|
|
return true;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Acme-style left-button chords, plus suppression of X11 primary-selection
|
|
// paste. Button 1 (left) held while selecting is the anchor:
|
|
// left + middle tap = Cut, left + right tap = Paste.
|
|
// Both use edit_cut / edit_paste, which use the standard KDE clipboard
|
|
// (Klipper-backed). The right-button chord is free because the radial
|
|
// gesture is already suppressed while the left button is held. Middle-button
|
|
// events in the view are consumed on BOTH press and release to kill the
|
|
// middle-click primary paste (it fires on release, not just press).
|
|
if (event->type() == QEvent::MouseButtonRelease) {
|
|
auto *mev = static_cast<QMouseEvent *>(event);
|
|
if (mev->button() == Qt::LeftButton) {
|
|
m_leftDownInView = false;
|
|
}
|
|
if (mev->button() == Qt::MiddleButton && m_swallowMiddleRelease) {
|
|
m_swallowMiddleRelease = false;
|
|
return true; // suppress the primary paste that fires on release
|
|
}
|
|
if (mev->button() == Qt::RightButton && m_swallowRightRelease) {
|
|
m_swallowRightRelease = false;
|
|
return true; // paired release of a paste chord
|
|
}
|
|
} else if (event->type() == QEvent::MouseButtonPress) {
|
|
auto *mev = static_cast<QMouseEvent *>(event);
|
|
KTextEditor::View *v = m_mainWindow->activeView();
|
|
auto *w = qobject_cast<QWidget *>(obj);
|
|
const bool inView = v && w && v->isAncestorOf(w);
|
|
|
|
// left + right tap = Paste over the selection.
|
|
if (mev->button() == Qt::RightButton && m_leftDownInView && inView) {
|
|
if (QAction *paste = findActionByName(QStringLiteral("edit_paste"))) {
|
|
paste->trigger();
|
|
}
|
|
m_swallowRightRelease = true;
|
|
return true; // consume: chord, not a radial / context menu
|
|
}
|
|
|
|
if (mev->button() == Qt::MiddleButton && inView) {
|
|
if (m_leftDownInView) {
|
|
if (QAction *cut = findActionByName(QStringLiteral("edit_cut"))) {
|
|
cut->trigger();
|
|
}
|
|
}
|
|
// Consume press (and its release) to suppress middle-click primary
|
|
// paste entirely inside the editor.
|
|
m_swallowMiddleRelease = true;
|
|
return true;
|
|
}
|
|
if (mev->button() == Qt::LeftButton && inView) {
|
|
m_leftDownInView = true; // anchor set; selection proceeds normally
|
|
}
|
|
}
|
|
|
|
// Suppress the context menu that would otherwise follow an RMB gesture.
|
|
if (event->type() == QEvent::ContextMenu
|
|
&& m_buttonToRadial.contains(static_cast<int>(Qt::RightButton))) {
|
|
KTextEditor::View *view = m_mainWindow->activeView();
|
|
auto *widget = qobject_cast<QWidget *>(obj);
|
|
if (view && widget && view->isAncestorOf(widget)) {
|
|
return true;
|
|
}
|
|
return QObject::eventFilter(obj, event);
|
|
}
|
|
|
|
if (event->type() != QEvent::MouseButtonPress) {
|
|
return QObject::eventFilter(obj, event);
|
|
}
|
|
auto *me = static_cast<QMouseEvent *>(event);
|
|
const int button = static_cast<int>(me->button());
|
|
if (!m_buttonToRadial.contains(button)) {
|
|
return QObject::eventFilter(obj, event);
|
|
}
|
|
|
|
// Only hijack presses that land inside the active view's editing area.
|
|
KTextEditor::View *view = m_mainWindow->activeView();
|
|
auto *widget = qobject_cast<QWidget *>(obj);
|
|
if (!view || !widget || !view->isAncestorOf(widget)) {
|
|
return QObject::eventFilter(obj, event);
|
|
}
|
|
|
|
// Suppress the radial when the left button is already held: the user is
|
|
// mid-selection (or setting up a left+middle chord), not starting a clean
|
|
// radial gesture. buttons() reports the other buttons down at press time.
|
|
if (m_leftDownInView || (me->buttons() & Qt::LeftButton)) {
|
|
return QObject::eventFilter(obj, event);
|
|
}
|
|
|
|
// Pop the radial at the press position and begin the drag gesture. The
|
|
// press is consumed so the context menu does not appear and the caret is
|
|
// not moved (an intentional, configured trade-off).
|
|
showRadialAt(m_buttonToRadial.value(button), me->globalPosition().toPoint());
|
|
m_gestureActive = true;
|
|
return true;
|
|
}
|
|
|
|
void OllieView::showRadial(int defIndex)
|
|
{
|
|
QPoint global;
|
|
if (KTextEditor::View *view = m_mainWindow->activeView()) {
|
|
global = view->mapToGlobal(view->cursorPositionCoordinates());
|
|
} else if (QWidget *w = m_mainWindow->window()) {
|
|
global = w->mapToGlobal(w->rect().center());
|
|
}
|
|
showRadialAt(defIndex, global);
|
|
}
|
|
|
|
void OllieView::showRadialAt(int defIndex, const QPoint &globalPos)
|
|
{
|
|
if (defIndex < 0 || defIndex >= m_radialDefs.size()) {
|
|
return;
|
|
}
|
|
if (!m_radial) {
|
|
m_radial = new RadialMenu(m_mainWindow->window());
|
|
connect(m_radial, &RadialMenu::activatedId, this, &OllieView::onRadialActivated);
|
|
}
|
|
m_radial->popup(m_radialDefs.at(defIndex).root, globalPos);
|
|
}
|
|
|
|
void OllieView::onRadialActivated(const QString &actionId)
|
|
{
|
|
// The palette is reachable from inside a radial as a special slice.
|
|
if (actionId == QLatin1String("ollie_command_palette")) {
|
|
showCommandPalette();
|
|
return;
|
|
}
|
|
if (QAction *a = findActionByName(actionId)) {
|
|
a->trigger();
|
|
}
|
|
}
|
|
|
|
} // namespace katecustom
|
|
|
|
// K_PLUGIN_FACTORY generates the factory and the moc-level registration. The
|
|
// matching .moc include is required in this translation unit.
|
|
K_PLUGIN_FACTORY_WITH_JSON(OlliePluginFactory, "ollieplugin.json",
|
|
registerPlugin<katecustom::OlliePlugin>();)
|
|
|
|
#include "ollieplugin.moc"
|