Tab and Ctrl+Space completion for chatbar.

src/mumble/CustomElements.cpp

@@ -29,6 +29,15 @@
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 #include "CustomElements.h"
+#include "ClientUser.h"
+
+/*!
+  \fn int ChatbarLineEdit::completeAtCursor()
+  The bar will try to complete the username, if the nickname
+  is already complete it will try to find a longer match. If
+  there is none it will cycle the nicknames alphabetically.
+  Nothing is done on mismatch.
+*/
 
 void ChatbarLineEdit::focusInEvent(QFocusEvent *) {
 	if (bDefaultVisible) {
@@ -57,7 +66,7 @@ void ChatbarLineEdit::focusOutEvent(QFocusEvent *) {
 ChatbarLineEdit::ChatbarLineEdit(QWidget *p) : QLineEdit(p) {
 	bDefaultVisible = true;
 	setDefaultText(tr("Type chat message here"));
-};
+}
 
 void ChatbarLineEdit::setDefaultText(const QString &new_default) {
 	qsDefaultText = new_default;
@@ -72,6 +81,86 @@ void ChatbarLineEdit::setDefaultText(const QString &new_default) {
 	}
 }
 
+bool ChatbarLineEdit::event(QEvent *event) {
+	if (event->type() == QEvent::KeyPress) {
+		QKeyEvent *kev = static_cast<QKeyEvent*>(event);
+		if (kev->key() == Qt::Key_Tab) {
+			emit tabPressed();
+			return true;
+		}
+		else if (kev->key() == Qt::Key_Space && kev->modifiers() == Qt::ControlModifier) {
+			emit ctrlSpacePressed();
+			return true;
+		}
+	}
+	return QLineEdit::event(event);
+}
+
+unsigned int ChatbarLineEdit::completeAtCursor() {
+	// Get an alphabetically sorted list of usernames
+	unsigned int id = 0;
+	QList<QString> qlsUsernames;
+
+	if (ClientUser::c_qmUsers.empty()) return id;
+	foreach (ClientUser *usr, ClientUser::c_qmUsers) {
+		qlsUsernames.append(usr->qsName);
+	}
+	qSort(qlsUsernames);
+
+	QString newtext;
+	newtext = text();
+	QString target = QString();
+	if (newtext.isEmpty()) {
+		target = qlsUsernames.first();
+		newtext = target;
+	}
+	else {
+		// Get the word before the cursor
+		bool bBaseIsName = false;
+		int iend = cursorPosition();
+		int istart = newtext.lastIndexOf(QLatin1Char(' '), iend - 1) + 1;
+		QString base = newtext.mid(istart, iend - istart);
+
+		if (qlsUsernames.last() == base) {
+			bBaseIsName = true;
+			target = qlsUsernames.first();
+		}
+		else {
+			if (qlsUsernames.contains(base)) {
+				// Prevent to complete to what's already there
+				while (qlsUsernames.takeFirst() != base) {}
+				bBaseIsName = true;
+			}
+
+			foreach (QString name, qlsUsernames) {
+				if (name.startsWith(base, Qt::CaseInsensitive)) {
+					target = name;
+					break;
+				}
+			}
+		}
+
+		if (bBaseIsName && target.isEmpty() && !qlsUsernames.empty()) {
+			// If autocomplete failed and base was a name get the next one
+			target = qlsUsernames.first();
+		}
+
+		if (!target.isEmpty()) {
+			newtext.replace(istart, base.length(), target);
+		}
+	}
+
+	if (!target.isEmpty()) {
+		foreach (ClientUser *usr, ClientUser::c_qmUsers) {
+			if (usr->qsName == target) {
+				id = usr->uiSession;
+				break;
+			}
+		}
+		setText(newtext);
+	}
+	return id;
+}
 
 DockTitleBar::DockTitleBar() {
 	qtTick = new QTimer(this);

src/mumble/CustomElements.h

@@ -42,9 +42,14 @@ class ChatbarLineEdit : public QLineEdit {
 		bool bDefaultVisible;
 		void focusInEvent(QFocusEvent *);
 		void focusOutEvent(QFocusEvent *);
+		bool event(QEvent *);
+	signals:
+		void tabPressed(void);
+		void ctrlSpacePressed(void);
 	public:
 		ChatbarLineEdit(QWidget *p = NULL);
 		void setDefaultText(const QString &);
+		unsigned int completeAtCursor();
 };
 
 class DockTitleBar : public QWidget {

src/mumble/MainWindow.cpp

@@ -57,6 +57,18 @@
 #include "NetworkConfig.h"
 #include "ACL.h"
 
+/*!
+  \fn void MainWindow::on_qleChat_tabPressed()
+  Controlls tab username completion for the chatbar.
+  \see ChatbarLineEdit::completeAtCursor()
+*/
+
+/*!
+  \fn void MainWindow::on_qleChat_ctrlSpacePressed()
+  Controlls ctrl space username completion and selection for the chatbar.
+  \see ChatbarLineEdit::completeAtCursor()
+*/
+
 /*!
   \fn void MainWindow::qtvUserCurrentChanged(const QModelIndex &, const QModelIndex &)
   This function updates the qleChatbar default text according to
@@ -1021,6 +1033,16 @@ void MainWindow::on_qleChat_returnPressed() {
 	qleChat->clear();
 }
 
+void MainWindow::on_qleChat_tabPressed() {
+	qleChat->completeAtCursor();
+}
+
+void MainWindow::on_qleChat_ctrlSpacePressed() {
+	unsigned int res = qleChat->completeAtCursor();
+	if (res == 0) return;
+	qtvUsers->setCurrentIndex(pmModel->index(ClientUser::get(res)));
+}
+
 void MainWindow::on_qmConfig_aboutToShow() {
 	// Don't remove the config, as that messes up OSX.
 	foreach(QAction *a, qmConfig->actions())

src/mumble/MainWindow.h

@@ -167,6 +167,8 @@ class MainWindow : public QMainWindow, public MessageHandler, public Ui::MainWin
 		void on_qaHelpVersionCheck_triggered();
 		void on_qaQuit_triggered();
 		void on_qleChat_returnPressed();
+		void on_qleChat_tabPressed();
+		void on_qleChat_ctrlSpacePressed();
 		void on_qteLog_customContextMenuRequested(const QPoint &pos);
 		void on_qteLog_anchorClicked(const QUrl &);
 		void on_qteLog_highlighted(const QUrl & link);

src/mumble/UserModel.h

@@ -92,10 +92,6 @@ class UserModel : public QAbstractItemModel {
 		QSet<Channel *> qsLinked;
 		QMap<QString, ClientUser *> qmHashes;
 
-		QModelIndex index(ClientUser *, int column = 0) const;
-		QModelIndex index(Channel *, int column = 0) const;
-		QModelIndex index(ModelItem *) const;
-
 		void recursiveClone(const ModelItem *old, ModelItem *item, QModelIndexList &from, QModelIndexList &to);
 		ModelItem *moveItem(ModelItem *oldparent, ModelItem *newparent, ModelItem *item);
 
@@ -104,6 +100,10 @@ class UserModel : public QAbstractItemModel {
 		UserModel(QObject *parent = 0);
 		~UserModel();
 
+		QModelIndex index(ClientUser *, int column = 0) const;
+		QModelIndex index(Channel *, int column = 0) const;
+		QModelIndex index(ModelItem *) const;
+
 		QVariant data(const QModelIndex &index, int role) const;
 		Qt::ItemFlags flags(const QModelIndex &index) const;
 		QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;