import/export keyboard shortcuts

dialogs/preferencesdialog.cpp

@@ -19,6 +19,8 @@
 #include <QTreeWidgetItem>
 #include <QList>
 #include <QDoubleSpinBox>
+#include <QFileDialog>
+#include <QMessageBox>
 
 #include "debug.h"
 
@@ -29,7 +31,23 @@ KeySequenceEditor::KeySequenceEditor(QWidget* parent, QAction* a)
 }
 
 void KeySequenceEditor::set_action_shortcut() {
-	action->setShortcut(keySequence());
+    action->setShortcut(keySequence());
+}
+
+void KeySequenceEditor::reset_to_default() {
+    setKeySequence(action->property("default").toString());
+}
+
+QString KeySequenceEditor::action_name() {
+    return action->text().replace("&", "");
+}
+
+QString KeySequenceEditor::export_shortcut() {
+    QString ks = keySequence().toString();
+    if (ks != action->property("default")) {
+        return action->text().replace("&", "") + "\t" + keySequence().toString();
+    }
+    return 0;
 }
 
 PreferencesDialog::PreferencesDialog(QWidget *parent) :
@@ -60,8 +78,7 @@ void PreferencesDialog::setup_kbd_shortcut_worker(QMenu* menu, QTreeWidgetItem*
 			if (a->menu() != NULL) {
 				item->setChildIndicatorPolicy(QTreeWidgetItem::ShowIndicator);
 				setup_kbd_shortcut_worker(a->menu(), item);
-			} else {
-				item->setData(0, Qt::UserRole + 1, reinterpret_cast<quintptr>(a));
+            } else {
 				key_shortcut_items.append(item);
 				key_shortcut_actions.append(a);
 			}
@@ -112,12 +129,7 @@ void PreferencesDialog::reset_default_shortcut() {
 	QList<QTreeWidgetItem*> items = keyboard_tree->selectedItems();
 	for (int i=0;i<items.size();i++) {
 		QTreeWidgetItem* item = keyboard_tree->selectedItems().at(i);
-		const QVariant& data = item->data(0, Qt::UserRole + 1);
-		if (!data.isNull()) {
-			QAction* a = reinterpret_cast<QAction*>(data.value<quintptr>());
-			QKeySequence ks(a->property("default").toString());
-			static_cast<QKeySequenceEdit*>(keyboard_tree->itemWidget(item, 1))->setKeySequence(ks);
-		}
+        static_cast<KeySequenceEditor*>(keyboard_tree->itemWidget(item, 1))->reset_to_default();
 	}
 }
 
@@ -158,7 +170,59 @@ bool PreferencesDialog::refine_shortcut_list(const QString &s, QTreeWidgetItem*
 		parent->setHidden(all_children_are_hidden);
 
 		return all_children_are_hidden;
-	}
+    }
+    return true;
+}
+
+void PreferencesDialog::load_shortcut_file() {
+    QString fn = QFileDialog::getOpenFileName(this, "Import Keyboard Shortcuts");
+    if (!fn.isEmpty()) {
+        QFile f(fn);
+        if (f.exists() && f.open(QFile::ReadOnly)) {
+            QByteArray ba = f.readAll();
+            f.close();
+            for (int i=0;i<key_shortcut_fields.size();i++) {
+                int index = ba.indexOf(key_shortcut_fields.at(i)->action_name());
+                if (index == 0 || (index > 0 && ba.at(index-1) == '\n')) {
+                    while (index < ba.size() && ba.at(index) != '\t') index++;
+                    QString ks;
+                    index++;
+                    while (index < ba.size() && ba.at(index) != '\n') {
+                        ks.append(ba.at(index));
+                        index++;
+                    }
+                    dout << "set" << key_shortcut_fields.at(i)->action_name() << "to" << ks;
+                    key_shortcut_fields.at(i)->setKeySequence(ks);
+                } else {
+                    key_shortcut_fields.at(i)->reset_to_default();
+                }
+            }
+        } else {
+            QMessageBox::critical(this, "Error saving shortcuts", "Failed to open file for reading");
+        }
+    }
+}
+
+void PreferencesDialog::save_shortcut_file() {
+    QString fn = QFileDialog::getSaveFileName(this, "Export Keyboard Shortcuts");
+    if (!fn.isEmpty()) {
+        QFile f(fn);
+        if (f.open(QFile::WriteOnly)) {
+            bool start = true;
+            for (int i=0;i<key_shortcut_fields.size();i++) {
+                QString s = key_shortcut_fields.at(i)->export_shortcut();
+                if (!s.isEmpty()) {
+                    if (!start) f.write("\n");
+                    f.write(s.toUtf8());
+                    start = false;
+                }
+            }
+            QMessageBox::information(this, "Export Shortcuts", "Shortcuts exported successfully");
+            f.close();
+        } else {
+            QMessageBox::critical(this, "Error saving shortcuts", "Failed to open file for writing");
+        }
+    }
 }
 
 void PreferencesDialog::setup_ui() {
@@ -249,7 +313,16 @@ void PreferencesDialog::setup_ui() {
 	tree_header->setText(1, "Shortcut");
 	shortcut_layout->addWidget(keyboard_tree);
 
-	QHBoxLayout* reset_shortcut_layout = new QHBoxLayout();
+    QHBoxLayout* reset_shortcut_layout = new QHBoxLayout();
+
+    QPushButton* import_shortcut_button = new QPushButton("Import");
+    reset_shortcut_layout->addWidget(import_shortcut_button);
+    connect(import_shortcut_button, SIGNAL(clicked(bool)), this, SLOT(load_shortcut_file()));
+
+    QPushButton* export_shortcut_button = new QPushButton("Export");
+    reset_shortcut_layout->addWidget(export_shortcut_button);
+    connect(export_shortcut_button, SIGNAL(clicked(bool)), this, SLOT(save_shortcut_file()));
+
 	reset_shortcut_layout->addStretch();
 
 	reset_shortcut_button = new QPushButton("Reset to Default");