editortabs.cpp

linux下的sourceinsight

 * @param	list	The list to fill
 */
void EditorTabs::getOpenFiles(FileLocationList& list)
{
	int i;
	EditorPage* pPage;
	uint nLine, nCol;
	
	// Iterate over all editor pages
	for (i = 0; i < count(); i++) {
		// Obtain file and cursor position information
		pPage = (EditorPage*)page(i);
		if (!pPage->getCursorPos(nLine, nCol)) {
			nLine = 1;
			nCol = 1;
		}
		
		// Create a new list item
		list.append(new FileLocation(pPage->getFilePath(), nLine, nCol));
	}
}

/**
 * Constructs a list bookmarks set to open files.
 * Used to store all currently set bookmarks when a session is closed.
 * @param	fll	The list to fill
 */
void EditorTabs::getBookmarks(FileLocationList& fll)
{
	int i;
	EditorPage* pPage;
	
	// Iterate over all editor pages
	for (i = 0; i < count(); i++) {
		pPage = (EditorPage*)page(i);
		pPage->getBookmarks(fll);
	}
}

/**
 * Assigns bookmarks to open files.
 * Called when a session is opened, to restore any bookmarks set to existing
 * editor pages.
 * @param	fll	A list of bookmark positions
 */
void EditorTabs::setBookmarks(FileLocationList& fll)
{
	FileLocation* pLoc;
	EditorMap::iterator itr;
	EditorPage* pPage;
	
	// Iterate over the list of bookmarks
	for (pLoc = fll.first(); pLoc; pLoc = fll.next()) {
		itr = m_mapEdit.find(pLoc->m_sPath);
		// Get the relevant page, if any
		if (itr != m_mapEdit.end()) {
			pPage = *itr;
			pPage->addBookmark(pLoc->m_nLine);
		}
	}
}

/**
 * Fills a QueryView object with the list of currently active bookmarks.
 * @param	pView	The widget to use for displaying bookmarks
 */
void EditorTabs::showBookmarks(QueryView* pView)
{
	int i;
	EditorPage* pPage;
	FileLocationList fll;
	FileLocation* pLoc;
	
	fll.setAutoDelete(true);
	
	// Iterate over all editor pages
	for (i = 0; i < count(); i++) {
		// Obtain file and cursor position information
		pPage = (EditorPage*)page(i);
		pPage->getBookmarks(fll);
		
		// Populate the view
		for (pLoc = fll.first(); pLoc; pLoc = fll.next()) {
			pView->addRecord("", pLoc->m_sPath,
				QString::number(pLoc->m_nLine + 1),
				pPage->getLineContents(pLoc->m_nLine + 1));
		}
		
		fll.clear();
	}
}

/**
 * Removes an editor page.
 * If there are unsaved changes, the user is prompted, and the file is closed 
 * according to the user's choice.
 * This slot is connected to the clicked() signal of the tab's close button.
 * @param	pPage	The EditorPage object to remove
 */
void EditorTabs::slotRemovePage(QWidget* pPage)
{
	removePage(pPage, false);
}

/**
 * Handles the "View->Show/Hide Tag List" menu item.
 * Shows/hides the tag list for the current page, and sets the default values
 * for all pages.
 */
void EditorTabs::slotToggleTagList()
{
	EditorPage* pPage;
	
	// Change the default value
	Config().setShowTagList(!Config().getShowTagList());
	
	// Apply for the current page, if any
	if ((pPage = (EditorPage*)currentPage()) != NULL) {
		pPage->setLayout(Config().getShowTagList(),
			Config().getEditorSizes());
	}
}

/**
 * Handles drag events over an empty tab widget, or over the tab bar.
 * The event is accepted if the dragged object is a list of file paths.
 * @param	pEvent	The drag move event object
 */
void EditorTabs::dragMoveEvent(QDragMoveEvent* pEvent)
{
	KURL::List list;
	bool bAccept;
	
	bAccept = KURLDrag::decode(pEvent, list);
	pEvent->accept(bAccept);
}

/**
 * Handles file drops over an empty tab widget, or over the tab bar.
 * @param	pEvent	The drop event object
 */
void EditorTabs::dropEvent(QDropEvent* pEvent)
{
	emit filesDropped(pEvent);
}

/**
 * Called when an editor tab is dragged from the tab widget.
 * Initialises the drag operation with a URL that corresponds to the path of
 * the file being edited in the corresponding page.
 * This slot is connected to the initiateDrag() signal emitted by the tab
 * widget.
 * @param	pWidget	The page whose tab is being dragged
 */
void EditorTabs::slotInitiateDrag(QWidget* pWidget)
{
	KURL url;
	KURLDrag* pDrag;

	// Create a URL list containing the appropriate file path
	url.setPath(((EditorPage*)pWidget)->getFilePath());
	pDrag = new KURLDrag(KURL::List(url), this);
	
	// Start the drag
	pDrag->dragCopy();
}

/**
 * Changes the tab icon of a modified file.
 * @param	pEditPage	The editor page whose file was modified
 * @param	bModified	true if the file has changed its status to modified,
 *						false otherwise (i.e., when undo operations restore it
 *						to its original contents.)
 */
void EditorTabs::slotFileModified(EditorPage* pEditPage, bool bModified)
{
	if (bModified)
		setTabIconSet(pEditPage, Pixmaps().getPixmap(KScopePixmaps::TabSave));
	else
		setTabIconSet(pEditPage, Pixmaps().getPixmap(KScopePixmaps::TabRW));
}

/**
 * Counts the number of pages containing modified files.
 * @return	The number of modified files
 */
int EditorTabs::getModifiedFilesCount()
{
	int i, nResult;
	
	// Iterate through pages
	for (i = 0, nResult = 0; i < count(); i++) {
		if (((EditorPage*)page(i))->isModified())
			nResult++;
	}
	
	return nResult;
}

/**
 * Saves all files open for editing.
 */
void EditorTabs::slotSaveAll()
{
	int i;
	
	// Iterate through pages
	for (i = 0; i < count(); i++)
		((EditorPage*)page(i))->save();
}

/**
 * Selects the page to the left of the current one.
 */
void EditorTabs::slotGoLeft()
{
	int nIndex;
	
	nIndex = currentPageIndex();
	if (nIndex > 0) {
		nIndex--;
		setCurrentPage(nIndex);
	}
}

/**
 * Selects the page to the right of the current one.
 */
void EditorTabs::slotGoRight()
{
	int nIndex;
	
	nIndex = currentPageIndex();
	if (nIndex < count() - 1) {
		nIndex++;
		setCurrentPage(nIndex);
	}
}

/**
 * Fills the main window's "Window" menu with the current list of file tabs.
 * This slot is attached to the aboutToShow() signal, emitted by the Window
 * popup menu.
 */
void EditorTabs::slotFillWindowMenu()
{
	QString sLabel;
	int i;
	
	// Delete old menu items
	// NOTE: We can't use aboutToHide() to do that, since it is emitted 
	// _before_ the activated() signal
	for (i = 0; i < m_nWindowMenuItems; i++)
		m_pWindowMenu->removeItem(i);
	
	// Add new items
	for (i = 0; i < count(); i++) {
		sLabel = (i < 10) ? QString("&%1 %2").arg(i).arg(label(i)) : label(i);
		m_pWindowMenu->insertItem(sLabel, i);
	}
	
	// Store the number of items added
	m_nWindowMenuItems = i;
}

/**
 * Sets the current page to the given one.
 * This slot is attached to the activated() signal, emitted by the "Window"
 * popup menu. The tab number to switch to is given by the menu item ID.
 * Note that we do not trust setCurrentPage() to filter out the IDs of other
 * menu items (which are supposed to be negative numbers).
 */
void EditorTabs::slotSetCurrentPage(int nId)
{
	if (nId >= 0 && nId < count())
		setCurrentPage(nId);
}

/**
 * Closes an edited file, and removes its page.
 * Once a file has been closed, its page is removed from the tab widget stack,
 * its menu item in the "Windows" menu is deleted and all other references to
 * it are removed.
 * Note that the operation may fail if the user chooses not to close the file
 * when prompted for unsaved changes.
 * @param	pPage	The EditorPage object to remove
 * @param	bForce	true to close the page even if there are unsaved changes,
 *					false otherwise
 * @return	true if the page was removed, false otherwise
 */
bool EditorTabs::removePage(QWidget* pPage, bool bForce)
{
	EditorPage* pEditPage;
	QString sFilePath;
	
	// Store the file path for later
	pEditPage = (EditorPage*)pPage;
	sFilePath = pEditPage->getFilePath();
	
	// Close the edited file (may fail if the user aborts the action)
	if (!pEditPage->close(bForce))
		return false;
		
	// Remove the page and all references to it
	m_mapEdit.remove(sFilePath);
	TabWidget::removePage(pPage);

	// Update the new state if no other page exists (if another page has
	// become active, it will update the new state, so there is no need for
	// special handling)
	if (currentPage() == NULL)
		slotCurrentChanged(NULL);
	
	// Notify the page has been removed
	emit editorRemoved(pEditPage);
	return true;
}

#include "editortabs.moc"