/**
* Returns a the complete word defined by the current cursor position.
* Attempts to extract a valid C symbol from the location of the cursor, by
* starting at the current line and column, and looking forward and backward
* for non-symbol characters.
* @return A C symbol under the cursor, if any, or QString::null otherwise
*/
QString EditorPage::getWordUnderCursor(uint* pPosInWord)
{
KTextEditor::ViewCursorInterface* pCursor;
KTextEditor::EditInterface* pEditIf;
QString sLine;
uint nLine, nCol, nFrom, nTo, nLast, nLength;
QChar ch;
// Get a cursor object
pCursor = dynamic_cast<KTextEditor::ViewCursorInterface*>(m_pView);
if (pCursor == NULL)
return QString::null;
// Get a pointer to the edit interface
pEditIf = dynamic_cast<KTextEditor::EditInterface*>(m_pDoc);
if (!pEditIf)
return QString::null;
// Get the line on which the cursor is positioned
pCursor->cursorPositionReal(&nLine, &nCol);
sLine = pEditIf->textLine(nLine);
// Find the beginning of the current word
for (nFrom = nCol; nFrom > 0;) {
ch = sLine.at(nFrom - 1);
if (!ch.isLetter() && !ch.isDigit() && ch != '_')
break;
nFrom--;
}
// Find the end of the current word
nLast = sLine.length();
for (nTo = nCol; nTo < nLast;) {
ch = sLine.at(nTo);
if (!ch.isLetter() && !ch.isDigit() && ch != '_')
break;
nTo++;
}
// Mark empty words
nLength = nTo - nFrom;
if (nLength == 0)
return QString::null;
// Return the in-word position, if required
if (pPosInWord != NULL)
*pPosInWord = nCol - nFrom;
// Extract the word under the cursor from the entire line
return sLine.mid(nFrom, nLength);
}
/**
* Returns the contents of the requested line.
* Truncates the leading and trailing white spaces.
* @param nLine The line number
* @return The text of the requested line, if successful, QString::null
* otherwise
*/
QString EditorPage::getLineContents(uint nLine)
{
KTextEditor::EditInterface* pEditIf;
QString sLine;
// Cannot accept line 0
if (nLine == 0)
return QString::null;
// Get a pointer to the edit interface
pEditIf = dynamic_cast<KTextEditor::EditInterface*>(m_pDoc);
if (!pEditIf)
return QString::null;
// Get the line on which the cursor is positioned
sLine = pEditIf->textLine(nLine - 1);
return sLine.stripWhiteSpace();
}
/**
* Moves the cursor to a given position.
* @param nLine The cursor's new line number
* @param nCol The cursor's new column number
* @return true if successful, false otherwise (cursor interface was not
* obtained)
*/
bool EditorPage::setCursorPos(uint nLine, uint nCol)
{
Kate::View* pKateView;
KTextEditor::ViewCursorInterface* pCursorIf;
// Cannot accept line 0
if (nLine == 0)
return false;
// Adjust to 0-based counting
nLine--;
nCol--;
// Acquire the view cursor
pCursorIf = dynamic_cast<KTextEditor::ViewCursorInterface*>(m_pView);
if (pCursorIf == NULL)
return false;
// NOTE: The following code is a fix to a bug in Kate, which wrongly
// calculates the column number in setCursorPosition.
pKateView = dynamic_cast<Kate::View*>(m_pView);
if (pKateView != NULL) {
KTextEditor::EditInterface* pEditIf;
const char* szLine;
uint nRealCol;
uint nTabAdjust;
// Get a pointer to the edit interface
pEditIf = dynamic_cast<KTextEditor::EditInterface*>(m_pDoc);
if (!pEditIf)
return false;
nRealCol = 0;
// Check for out of bound line numbers
if (nLine < pEditIf->numLines()) {
// Get the contents of the requested line
szLine = pEditIf->textLine(nLine).latin1();
// Check for empty line
if (szLine != NULL) {
// The number of columns which a tab character adds
nTabAdjust = pKateView->tabWidth() - 1;
// Calculate the real column, based on the tab width
for (; nRealCol < nCol && szLine[nRealCol] != 0; nRealCol++) {
if (szLine[nRealCol] == '\t')
nCol -= nTabAdjust;
}
}
}
else {
// Marker set beyond end of file, move to the last line
nLine = pEditIf->numLines() - 1;
}
// Set the cursor position
pCursorIf->setCursorPositionReal(nLine, nRealCol);
}
else {
// Non-Kate editors: set the cursor position normally
pCursorIf->setCursorPosition(nLine, nCol);
}
return true;
}
void KDataToolPluginView::aboutToShow()
{
kdDebug()<<"KTextEditor::KDataToolPluginView::aboutToShow"<<endl;
QString word;
m_singleWord = false;
m_wordUnderCursor = QString::null;
// unplug old actions, if any:
KAction *ac;
for ( ac = m_actionList.first(); ac; ac = m_actionList.next() ) {
m_menu->remove(ac);
}
if (m_notAvailable) {
m_menu->remove(m_notAvailable);
delete m_notAvailable;
m_notAvailable=0;
}
if ( selectionInterface(m_view->document())->hasSelection() )
{
word = selectionInterface(m_view->document())->selection();
if ( word.find(' ') == -1 && word.find('\t') == -1 && word.find('\n') == -1 )
m_singleWord = true;
else
m_singleWord = false;
} else {
// No selection -> use word under cursor
KTextEditor::EditInterface *ei;
KTextEditor::ViewCursorInterface *ci;
KTextEditor::View *v = (KTextEditor::View*)m_view;
ei = KTextEditor::editInterface(v->document());
ci = KTextEditor::viewCursorInterface(v);
uint line, col;
ci->cursorPositionReal(&line, &col);
QString tmp_line = ei->textLine(line);
m_wordUnderCursor = "";
// find begin of word:
m_singleWord_start = 0;
for(int i = col; i >= 0; i--) {
QChar ch = tmp_line.at(i);
if( ! (ch.isLetter() || ch == '-' || ch == '\'') )
{
m_singleWord_start = i+1;
break;
}
m_wordUnderCursor = ch + m_wordUnderCursor;
}
// find end of word:
m_singleWord_end = tmp_line.length();
for(uint i = col+1; i < tmp_line.length(); i++) {
QChar ch = tmp_line.at(i);
if( ! (ch.isLetter() || ch == '-' || ch == '\'') )
{
m_singleWord_end = i;
break;
}
m_wordUnderCursor += ch;
}
if( ! m_wordUnderCursor.isEmpty() )
{
m_singleWord = true;
m_singleWord_line = line;
} else {
m_notAvailable = new KAction(i18n("(not available)"), QString::null, 0, this,
SLOT(slotNotAvailable()), actionCollection(),"dt_n_av");
m_menu->insert(m_notAvailable);
return;
}
}
KInstance *inst=instance();
QValueList<KDataToolInfo> tools;
tools += KDataToolInfo::query( "QString", "text/plain", inst );
if( m_singleWord )
tools += KDataToolInfo::query( "QString", "application/x-singleword", inst );
m_actionList = KDataToolAction::dataToolActionList( tools, this,
SLOT( slotToolActivated( const KDataToolInfo &, const QString & ) ) );
for ( ac = m_actionList.first(); ac; ac = m_actionList.next() ) {
m_menu->insert(ac);
}
if( m_actionList.isEmpty() ) {
m_notAvailable = new KAction(i18n("(not available)"), QString::null, 0, this,
SLOT(slotNotAvailable()), actionCollection(),"dt_n_av");
m_menu->insert(m_notAvailable);
}
}
