KItemListKeyboardSearchManager: make it possible to choose the timeout

It's now possible to change the timeout, after which any call of
KItemListKeyboardSearchManager::addKeys(const QString&) starts a new
search, from the default value of 5000 milliseconds. This is not used
in Dolphin at the moment, but it permits to reduce the timeout to a
small value in the unit test. Before this change, the unit test took
more than 5 seconds to complete.
(cherry picked from commit 82fc1b54bd01768f50aba7d328cdcde7de1483d7)

2 files changed, 24 insertions, 3 deletions

diff --git a/src/kitemviews/kitemlistkeyboardsearchmanager.cpp b/src/kitemviews/kitemlistkeyboardsearchmanager.cpp
index 1ff60d09c..f4dc1a547 100644
--- a/src/kitemviews/kitemlistkeyboardsearchmanager.cpp
+++ b/src/kitemviews/kitemlistkeyboardsearchmanager.cpp
@@ -28,7 +28,8 @@
 #include <KDebug>
 
 KItemListKeyboardSearchManager::KItemListKeyboardSearchManager(QObject* parent) :
-    QObject(parent)
+    QObject(parent),
+    m_timeout(5000)
 {
     m_keyboardInputTime.invalidate();
 }
@@ -41,8 +42,7 @@ void KItemListKeyboardSearchManager::addKeys(const QString& keys)
 {
     const bool keyboardTimeWasValid = m_keyboardInputTime.isValid();
     const qint64 keyboardInputTimeElapsed = m_keyboardInputTime.restart();
-    const qint64 timeout = 5000;
-    if (keyboardInputTimeElapsed > timeout || !keyboardTimeWasValid || keys.isEmpty()) {
+    if (keyboardInputTimeElapsed > m_timeout || !keyboardTimeWasValid || keys.isEmpty()) {
         m_searchedString.clear();
     }
 
@@ -65,3 +65,14 @@ void KItemListKeyboardSearchManager::addKeys(const QString& keys)
     }
     m_keyboardInputTime.start();
 }
+
+void KItemListKeyboardSearchManager::setTimeout(qint64 milliseconds)
+{
+    m_timeout = milliseconds;
+}
+
+qint64 KItemListKeyboardSearchManager::timeout() const
+{
+    return m_timeout;
+}
+
diff --git a/src/kitemviews/kitemlistkeyboardsearchmanager_p.h b/src/kitemviews/kitemlistkeyboardsearchmanager_p.h
index 05de76a8c..d6a6686db 100644
--- a/src/kitemviews/kitemlistkeyboardsearchmanager_p.h
+++ b/src/kitemviews/kitemlistkeyboardsearchmanager_p.h
@@ -49,6 +49,15 @@ public:
      */
     void addKeys(const QString& keys);
 
+    /**
+     * Sets the delay after which the search is cancelled to \a milliseconds.
+     * If the time interval between two calls of addKeys(const QString&) is
+     * larger than this, the second call will start a new search, rather than
+     * combining the keys received from both calls to a single search string.
+     */
+    void setTimeout(qint64 milliseconds);
+    qint64 timeout() const;
+
 signals:
     /**
      * Is emitted if the current item should be changed corresponding
@@ -64,6 +73,7 @@ signals:
 private:
     QString m_searchedString;
     QElapsedTimer m_keyboardInputTime;
+    qint64 m_timeout;
 };
 
 #endif