1 files changed, 56 insertions, 0 deletions
diff --git a/noatun-plugins/lyrics/historymanager.cpp b/noatun-plugins/lyrics/historymanager.cpp
new file mode 100644
index 0000000..1524d7b
--- /dev/null
+++ b/noatun-plugins/lyrics/historymanager.cpp
@@ -0,0 +1,56 @@
+#include "historymanager.h"
+
+/** HISTORY MANAGER ***
+*** TODO: Add more complex support (like in Konqueror)
+          Maybe use Konqueror's History Manager */
+
+HistoryManager::HistoryManager(QObject *parent) : QObject(parent) {
+}
+
+HistoryManager::~HistoryManager() {
+}
+
+void HistoryManager::addURL(const KURL &url) {
+  /* push current URL to the back */
+  if (!currentURL.isEmpty()) {
+    if (back_stack.count() == 0)
+      emit uiChanged( Back, true );
+    back_stack.push(currentURL);
+  }
+  /* Make a copy of the new URL */
+  currentURL = url;
+  /* Clear the forward stack */
+  if (forward_stack.count() > 0)
+    emit uiChanged( Forward, false );
+  forward_stack.clear();
+}
+
+KURL HistoryManager::back() {
+  if (back_stack.count() <= 0)
+    return KURL();
+  /* The currentURL is now pushed in the forward_stack */
+  if (forward_stack.count() == 0)
+    emit uiChanged( Forward, true );
+  forward_stack.push(currentURL);
+  /* The last URL is the back stack is now popped as the current one */
+  if (back_stack.count() == 1)
+    emit uiChanged( Back, false );
+  currentURL = back_stack.pop();
+  return currentURL;
+}
+
+KURL HistoryManager::forward() {
+  if (forward_stack.count() <= 0)
+    return KURL();
+  /* Push the currentURL into the back_stack */
+  if (back_stack.count() == 0)
+    emit uiChanged( Back, true );
+  back_stack.push(currentURL);
+  /* Pop from the forward_stack into the currentURL */
+  if (forward_stack.count() == 1)
+    emit uiChanged( Forward, false );
+  currentURL = forward_stack.pop();
+  return currentURL;
+}
+
+#include "historymanager.moc"