Sanitizing clipboard handling

[quassel.git] / src / uisupport / inputline.cpp

diff --git a/src/uisupport/inputline.cpp b/src/uisupport/inputline.cpp
index aa1ff85..b74e10e 100644 (file)
--- a/src/uisupport/inputline.cpp
+++ b/src/uisupport/inputline.cpp
@@ -1,11 +1,11 @@
 /***************************************************************************
- *   Copyright (C) 2005/06 by The Quassel Team                             *
+ *   Copyright (C) 2005/06 by the Quassel Project                          *
  *   devel@quassel-irc.org                                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
  *   it under the terms of the GNU General Public License as published by  *
  *   the Free Software Foundation; either version 2 of the License, or     *
- *   (at your option) any later version.                                   *
+ *   (at your option) version 3.                                           *
  *                                                                         *
  *   This program is distributed in the hope that it will be useful,       *
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
@@ -19,57 +19,122 @@
  ***************************************************************************/
 
 #include "inputline.h"
-
 #include "tabcompleter.h"
 
-InputLine::InputLine(QWidget *parent) : QLineEdit(parent) {
-  idx = 0;
-  connect(this, SIGNAL(returnPressed()), this, SLOT(enter()));
-  tabComplete = new TabCompleter(this);
-  connect(this, SIGNAL(nickListUpdated(QStringList)), tabComplete, SLOT(updateNickList(QStringList)));
+InputLine::InputLine(QWidget *parent)
+  : QLineEdit(parent),
+    idx(0),
+    tabCompleter(new TabCompleter(this))
+{
+  connect(this, SIGNAL(returnPressed()), this, SLOT(on_returnPressed()));
+  connect(this, SIGNAL(textChanged(QString)), this, SLOT(on_textChanged(QString)));
 }
 
 InputLine::~InputLine() {
-  delete tabComplete;
 }
 
 void InputLine::keyPressEvent(QKeyEvent * event) {
-  if(event->key() == Qt::Key_Tab) { // Tabcomplete
-    tabComplete->complete();
+  switch(event->key()) {
+  case Qt::Key_Up:
     event->accept();
-  } else {
-    tabComplete->disable();
-    if(event->key() == Qt::Key_Up) {
-      if(idx > 0) { idx--; setText(history[idx]); }
-      event->accept();
-    } else if(event->key() == Qt::Key_Down) {
-      if(idx < history.count()) idx++;
-      if(idx < history.count()) setText(history[idx]);
-      else setText("");
-      event->accept();
-    } else if(event->key() == Qt::Key_Select) {  // for Qtopia
-      emit returnPressed();
-      QLineEdit::keyPressEvent(event);
+
+    addToHistory(text(), true);
+
+    if(idx > 0) {
+      idx--;
+      showHistoryEntry();
+    }
+
+    break;
+
+  case Qt::Key_Down:
+    event->accept();
+
+    addToHistory(text(), true);
+
+    if(idx < history.count()) {
+      idx++;
+      if(idx < history.count() || tempHistory.contains(idx)) // tempHistory might have an entry for idx == history.count() + 1
+        showHistoryEntry();
+      else
+        resetLine();              // equals clear() in this case
     } else {
-      QLineEdit::keyPressEvent(event);
+      addToHistory(text());
+      resetLine();
     }
+
+    break;
+
+  case Qt::Key_Select:         // for Qtopia
+    emit returnPressed();
+
+  default:
+    QLineEdit::keyPressEvent(event);
   }
 }
 
-bool InputLine::event(QEvent *e) {
-  if(e->type() == QEvent::KeyPress) {
-    keyPressEvent(static_cast<QKeyEvent*>(e));
+bool InputLine::addToHistory(const QString &text, bool temporary) {
+  if(text.isEmpty())
+    return false;
+
+  Q_ASSERT(0 <= idx && idx <= history.count());
+
+  if(history.isEmpty() || text != history[idx - (int)(idx == history.count())]) {
+    // if an entry of the history is changed, we remember it and show it again at this
+    // position until a line was actually sent
+    // sent lines get appended to the history
+    if(temporary) {
+      tempHistory[idx] = text;
+    } else {
+      history << text;
+      tempHistory.clear();
+    }
     return true;
+  } else {
+    return false;
+  }
+}
+
+void InputLine::on_returnPressed() {
+  addToHistory(text());
+  emit sendText(text());
+  resetLine();
+}
+
+void InputLine::on_textChanged(QString newText) {
+  QStringList lineSeperators;
+  lineSeperators << QString("\r\n")
+                << QString('\n')
+                << QString('\r');
+
+  QString lineSep;
+  foreach(QString seperator, lineSeperators) {
+    if(newText.contains(seperator)) {
+      lineSep = seperator;
+      break;
+    }
+  }
+
+  if(lineSep.isEmpty())
+    return;
+
+  if(newText.contains(lineSep)) {
+    clear();
+    QString line = newText.section(lineSep, 0, 0);
+    QString remainder = newText.section(lineSep, 1);
+    insert(line);
+    emit returnPressed();
+    insert(remainder);
   }
-  return QLineEdit::event(e);
 }
 
-void InputLine::enter() {
-  history << text();
+void InputLine::resetLine() {
+  // every time the InputLine is cleared we also reset history index
   idx = history.count();
+  clear();
 }
 
-void InputLine::updateNickList(QStringList l) {
-  nickList = l;
-  emit nickListUpdated(l);
+void InputLine::showHistoryEntry() {
+  // if the user changed the history, display the changed line
+  tempHistory.contains(idx) ? setText(tempHistory[idx]) : setText(history[idx]);
 }