tab completion for groupchats (fixes #486)

qtox.pro

@@ -138,7 +138,8 @@ HEADERS  += src/widget/form/addfriendform.h \
     src/widget/maskablepixmapwidget.h \
     src/videosource.h \
     src/cameraworker.h \
-    src/widget/videosurface.h
+    src/widget/videosurface.h \
+    src/widget/form/tabcompleter.h
 
 SOURCES += \
     src/widget/form/addfriendform.cpp \
@@ -186,4 +187,5 @@ SOURCES += \
     src/widget/maskablepixmapwidget.cpp \
     src/cameraworker.cpp \
     src/widget/videosurface.cpp \
-    src/netvideosource.cpp
+    src/netvideosource.cpp \
+    src/widget/form/tabcompleter.cpp

src/widget/form/genericchatform.h

@@ -22,7 +22,7 @@
 #include <QDateTime>
 
 // Spacing in px inserted when the author of the last message changes
-#define AUTHOR_CHANGE_SPACING 5
+#define AUTHOR_CHANGE_SPACING 5 // why the hell is this a thing? surely the different font is enough?
 
 class QLabel;
 class QVBoxLayout;

src/widget/form/groupchatform.cpp

@@ -15,6 +15,7 @@
 */
 
 #include "groupchatform.h"
+#include "tabcompleter.h"
 #include "src/group.h"
 #include "src/widget/groupwidget.h"
 #include "src/widget/tool/chattextedit.h"
@@ -33,6 +34,8 @@ GroupChatForm::GroupChatForm(Group* chatGroup)
     namesList = new QLabel();
     namesList->setObjectName("peersLabel");
 
+    tabber = new TabCompleter(msgEdit, group);
+
     fileButton->setEnabled(false);
     callButton->setVisible(false);
     videoButton->setVisible(false);
@@ -59,6 +62,8 @@ GroupChatForm::GroupChatForm(Group* chatGroup)
 
     connect(sendButton, SIGNAL(clicked()), this, SLOT(onSendTriggered()));
     connect(msgEdit, SIGNAL(enterPressed()), this, SLOT(onSendTriggered()));
+    connect(msgEdit, &ChatTextEdit::tabPressed, tabber, &TabCompleter::complete);
+    connect(msgEdit, &ChatTextEdit::keyPressed, tabber, &TabCompleter::reset);
 
     setAcceptDrops(true);
 }

src/widget/form/groupchatform.h

@@ -21,6 +21,7 @@
 
 namespace Ui {class MainWindow;}
 class Group;
+class TabCompleter;
 
 class GroupChatForm : public GenericChatForm
 {
@@ -41,6 +42,7 @@ protected:
 private:
     Group* group;
     QLabel *nusersLabel, *namesList;
+    TabCompleter* tabber;
 };
 
 #endif // GROUPCHATFORM_H

src/widget/tool/chattextedit.cpp

@@ -27,11 +27,15 @@ ChatTextEdit::ChatTextEdit(QWidget *parent) :
 void ChatTextEdit::keyPressEvent(QKeyEvent * event)
 {
     int key = event->key();
-    if ((key == Qt::Key_Enter || key == Qt::Key_Return)
+    if ((key == Qt::Key_Enter || key == Qt::Key_Return) && !(event->modifiers() && Qt::ShiftModifier))
-            && !(event->modifiers() && Qt::ShiftModifier))
-    {
         emit enterPressed();
-        return;
+    else if (key == Qt::Key_Tab)
-    }
+        emit tabPressed();
+    else if (key == Qt::Key_Backspace) // because of the backspace() hack in tabber, we can't emit on these
         QTextEdit::keyPressEvent(event);
+    else
+    {
+        emit keyPressed();
+        QTextEdit::keyPressEvent(event);
+    }
 }

src/widget/tool/chattextedit.h

@@ -28,6 +28,8 @@ public:
 
 signals:
     void enterPressed();
+    void tabPressed();
+    void keyPressed();
 
 public slots: