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tdeaddons/noatun-plugins/lyrics/historymanager.cpp

57 lines
1.5 KiB

#include "historymanager.h"
/** HISTORY MANAGER ***
*** TODO: Add more complex support (like in Konqueror)
Maybe use Konqueror's History Manager */
HistoryManager::HistoryManager(TQObject *tqparent) : TQObject(tqparent) {
}
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"