void tst_Q3RichText::cursorPosition()
{
    Q3TextEdit textedit;
    textedit.setText( "This is a test" );
    textedit.setCursorPosition( textedit.paragraphs() - 1, textedit.paragraphLength( textedit.paragraphs() - 1 ) );
    int para;
    int index;
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 14 );
    textedit.setText( "This is a test\nThis is a test\nThis is a test" );
    textedit.setCursorPosition( textedit.paragraphs() - 1, textedit.paragraphLength( textedit.paragraphs() - 1 ) );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 2 );
    QCOMPARE( index, 14 );
}
Exemplo n.º 2
0
void
QUimTextUtil::Q3TextEditPositionBackward( int *cursor_para, int *cursor_index )
{
    Q3TextEdit *edit = static_cast<Q3TextEdit *>( mWidget );
    int preedit_len, preedit_cursor_pos;
    int para, index;
    int current_para, current_index;

    current_para = *cursor_para;
    current_index = *cursor_index;

    if ( ! mPreeditSaved ) {
        preedit_len = mIc->getPreeditString().length();
        preedit_cursor_pos = mIc->getPreeditCursorPosition();
    } else {
        preedit_len = 0;
        preedit_cursor_pos = 0;
    }
    edit->getCursorPosition( &para, &index );

    if ( current_para == para && current_index > ( index - preedit_cursor_pos ) && ( current_index <= ( index - preedit_cursor_pos + preedit_len ) ) )
        current_index = index - preedit_cursor_pos;

    if ( current_index > 0 )
        current_index--;
    else {
        if ( current_para > 0 ) {
            current_para--;
            current_index = edit->paragraphLength( current_para );
        }
    }

    *cursor_para = current_para;
    *cursor_index = current_index;
}
void tst_Q3RichText::keyPressEvent()
{
    // Still needs to test Key_Prior and Key_Next

    int para, index;

    Q3TextEdit textedit;
    textedit.show();
    textedit.setText( "This is a test" );

    qWarning( "Consider using QtTestCase::keyEvent() for sending key events" );
    QKeyEvent ke( QEvent::KeyPress, Qt::Key_Right, 0, Qt::NoButton );
    QApplication::sendEvent( textedit.viewport(), &ke );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 1 );

    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Right, 0, Qt::ControlModifier );
    QApplication::sendEvent( textedit.viewport(), &ke );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 5 );

    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Left, 0, Qt::NoButton );
    QApplication::sendEvent( textedit.viewport(), &ke );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 4 );

    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Left, 0, Qt::ControlModifier );
    QApplication::sendEvent( textedit.viewport(), &ke );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 0 );

    // Test that the text is removed when Enter/Return is pressed first
    textedit.selectAll();
    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Enter, 0, Qt::NoButton );
    QApplication::sendEvent( textedit.viewport(), &ke );
    QCOMPARE( textedit.text(), QString("\n") );

    textedit.setText( "This is a test" );
    textedit.selectAll();
    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Return, 0, Qt::NoButton );
    QApplication::sendEvent( textedit.viewport(), &ke );
    QCOMPARE( textedit.text(), QString("\n") );

    // Now test if the line-break is added in rich text mode
    textedit.setTextFormat( Qt::RichText );

    textedit.setText( "This is a test" );
    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Enter, 0, Qt::ControlModifier );
    QApplication::sendEvent( textedit.viewport(), &ke );
    QVERIFY( textedit.text().contains( "<br />" ) );

    textedit.setText( "This is a test" );
    textedit.moveCursor( Q3TextEdit::MoveLineEnd, FALSE );
    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Return, 0, Qt::ControlModifier );
    QApplication::sendEvent( textedit.viewport(), &ke );
    QVERIFY( textedit.text().contains( "<br />" ) );

    textedit.setText( "This is a test" );
    textedit.moveCursor( Q3TextEdit::MoveWordForward, FALSE );
    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Return, 0, Qt::NoButton );
    QApplication::sendEvent( textedit.viewport(), &ke );
    QString es = QString::fromLatin1("<p dir=\"ltr\">");
    QVERIFY( textedit.text().count( es ) == 2 );

    textedit.setTextFormat( Qt::AutoText );

    textedit.setText( "This is a test" );
    QApplication::clipboard()->setText("");
    textedit.selectAll();
    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Delete, 0, Qt::NoButton );
    QApplication::sendEvent( textedit.viewport(), &ke );
    QCOMPARE( textedit.text(), QString("") );

#if defined (Q_WS_WIN)
    textedit.setText( "This is a test" );
    QApplication::clipboard()->setText("");
    textedit.selectAll();
    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Delete, 0, Qt::ShiftModifier );
    QApplication::sendEvent( textedit.viewport(), &ke );
    QCOMPARE( textedit.text(), QString("") );
    QCOMPARE( QApplication::clipboard()->text(), QString("This is a test") );
#endif

    textedit.setText( "This is a test" );
    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Delete, 0, Qt::NoButton );
    QApplication::sendEvent( textedit.viewport(), &ke );
    QCOMPARE( textedit.text(), QString("his is a test") );

    bool nativeClipboardWorking = true;
#if defined (Q_WS_MAC)
    PasteboardRef pasteboard;
    OSStatus status = PasteboardCreate(0, &pasteboard);
    if (status == noErr)
        CFRelease(pasteboard);
    nativeClipboardWorking = status == noErr;
#endif

    if (nativeClipboardWorking) {
        textedit.setText( "This is a test" );
        QApplication::clipboard()->setText(" and this is another test");
        textedit.moveCursor( Q3TextEdit::MoveLineEnd, FALSE );
        ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Insert, 0, Qt::ShiftModifier );
        QApplication::sendEvent( textedit.viewport(), &ke );
        QCOMPARE( textedit.text(), QString("This is a test and this is another test") );
    }

#if defined (Q_WS_WIN)
    textedit.setText( "This is a test" );
    QApplication::clipboard()->setText("");
    textedit.selectAll();
    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Insert, 0, Qt::ControlModifier );
    QApplication::sendEvent( textedit.viewport(), &ke );
    QCOMPARE( QApplication::clipboard()->text(), QString("This is a test") );
#endif

    textedit.setText( "This is a test" );
    textedit.selectAll();
    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Backspace, 0, Qt::NoButton );
    QApplication::sendEvent( textedit.viewport(), &ke );
    QCOMPARE( textedit.text(), QString("") );

    textedit.setText( "This is a test" );
    textedit.moveCursor( Q3TextEdit::MoveLineEnd, FALSE );
    ke = QKeyEvent( QEvent::KeyPress, Qt::Key_Backspace, 0, Qt::NoButton );
    QApplication::sendEvent( textedit.viewport(), &ke );
    QCOMPARE( textedit.text(), QString( "This is a tes" ) );

    if (nativeClipboardWorking) {
        textedit.setText( "This is a test" );
        QApplication::clipboard()->setText("");
        textedit.selectAll();
        ke = QKeyEvent( QEvent::KeyPress, Qt::Key_F16, 0, Qt::NoButton );
        QApplication::sendEvent( textedit.viewport(), &ke );
        QCOMPARE( QApplication::clipboard()->text(), QString("This is a test") );

        textedit.setText( "This is a test" );
        textedit.moveCursor( Q3TextEdit::MoveLineEnd, FALSE );
        QApplication::clipboard()->setText(" and this is another test");
        ke = QKeyEvent( QEvent::KeyPress, Qt::Key_F18, 0, Qt::NoButton );
        QApplication::sendEvent( textedit.viewport(), &ke );
        QCOMPARE( textedit.text(), QString("This is a test and this is another test") );

        textedit.setText( "This is a test" );
        QApplication::clipboard()->setText("");
        textedit.selectAll();
        ke = QKeyEvent( QEvent::KeyPress, Qt::Key_F20, 0, Qt::NoButton );
        QApplication::sendEvent( textedit.viewport(), &ke );
        QCOMPARE( textedit.text(), QString("") );
        QCOMPARE( QApplication::clipboard()->text(), QString("This is a test") );
    }
}
void tst_Q3RichText::moveCursor()
{
    // Still needs to test for MovePageUp and MovePageDown

    int para, index;

    Q3TextEdit textedit;
    textedit.show();
    textedit.setText( "This is a test" );

    textedit.moveCursor( Q3TextEdit::MoveEnd, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 14 );

    textedit.moveCursor( Q3TextEdit::MoveBackward, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 13 );

    textedit.moveCursor( Q3TextEdit::MoveWordBackward, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 10 );

    textedit.moveCursor( Q3TextEdit::MoveHome, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 0 );

    textedit.moveCursor( Q3TextEdit::MoveForward, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 1 );

    textedit.moveCursor( Q3TextEdit::MoveWordForward, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 5 );

    textedit.moveCursor( Q3TextEdit::MoveLineStart, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 0 );

    textedit.moveCursor( Q3TextEdit::MoveLineEnd, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 14 );

    textedit.setText( "This is a test\nThis is a test\nThis is a test" );

    textedit.moveCursor( Q3TextEdit::MoveEnd, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 2 );
    QCOMPARE( index, 14 );

    textedit.moveCursor( Q3TextEdit::MoveBackward, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 2 );
    QCOMPARE( index, 13 );

    textedit.moveCursor( Q3TextEdit::MoveWordBackward, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 2 );
    QCOMPARE( index, 10 );

    textedit.moveCursor( Q3TextEdit::MoveHome, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 0 );

    textedit.moveCursor( Q3TextEdit::MoveForward, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 1 );

    textedit.moveCursor( Q3TextEdit::MoveWordForward, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 0 );
    QCOMPARE( index, 5 );

    textedit.moveCursor( Q3TextEdit::MoveDown, FALSE );
    textedit.moveCursor( Q3TextEdit::MoveDown, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 2 );
    QCOMPARE( index, 5 );

    textedit.moveCursor( Q3TextEdit::MoveLineStart, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 2 );
    QCOMPARE( index, 0 );

    textedit.moveCursor( Q3TextEdit::MoveLineEnd, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 2 );
    QCOMPARE( index, 14 );

    textedit.moveCursor( Q3TextEdit::MoveUp, FALSE );
    textedit.getCursorPosition( &para, &index );
    QCOMPARE( para, 1 );
    QCOMPARE( index, 14 );
}
Exemplo n.º 5
0
int
QUimTextUtil::acquireSelectionTextInQ3TextEdit( enum UTextOrigin origin,
                                                int former_req_len,
                                                int latter_req_len,
                                                char **former, char **latter )
{
    Q3TextEdit *edit = static_cast<Q3TextEdit *>( mWidget );
    QString text;
    int len, offset, newline;
    int start_para, start_index, end_para, end_index;
    int para, index;
    bool cursor_at_beginning = false;
    Qt::TextFormat format;

    if ( ! edit->hasSelectedText() )
        return -1;

    format = edit->textFormat();
    edit->setTextFormat( Qt::PlainText );

    edit->getCursorPosition( &para, &index );
    edit->getSelection(&start_para, &start_index, &end_para, &end_index, 0 );

    if ( para == start_para && index == start_index )
        cursor_at_beginning = true;

    text = edit->selectedText();
    len = text.length();

    if ( origin == UTextOrigin_Beginning ||
         ( origin == UTextOrigin_Cursor && cursor_at_beginning ) ) {
        *former = 0;
        offset = 0;
        if ( latter_req_len >= 0 ) {
            if ( len > latter_req_len )
                offset = len - latter_req_len;
        } else {
            if (! ( ~latter_req_len & ( ~UTextExtent_Line | ~UTextExtent_Full ) ) ) {
                edit->setTextFormat( format );
                return -1;
            }

            if ( latter_req_len == UTextExtent_Line && ( ( newline = text.indexOf( '\n' ) ) != -1 ) )
                offset = len - newline;
        }
        *latter = strdup( text.left( len - offset ).toUtf8().data() );
    } else if ( origin == UTextOrigin_End ||
                ( origin == UTextOrigin_Cursor && !cursor_at_beginning ) ) {
        offset = 0;
        if ( former_req_len >= 0 ) {
            if ( len > former_req_len )
                offset = len - former_req_len;
        } else {
            if (! ( ~former_req_len & ( ~UTextExtent_Line | ~UTextExtent_Full ) ) ) {
                edit->setTextFormat( format );
                return -1;
            }

            if ( former_req_len == UTextExtent_Line && ( ( newline = text.lastIndexOf( '\n' ) ) != -1 ) )
                offset = newline + 1;
        }
        *former = strdup( text.mid( offset, len - offset ).toUtf8().data() );
        *latter = 0;
    } else {
        edit->setTextFormat( format );
        return -1;
    }

    edit->setTextFormat( format );
    return 0;
}
Exemplo n.º 6
0
int
QUimTextUtil::acquirePrimaryTextInQ3TextEdit( enum UTextOrigin origin,
                                              int former_req_len,
                                              int latter_req_len,
                                              char **former, char **latter )
{
    Q3TextEdit *edit = static_cast<Q3TextEdit *>( mWidget );
    QString text;

    int start_para, start_index, end_para, end_index, para, index;
    int n_para;
    int preedit_len, preedit_cursor_pos;
    int sel_start_para, sel_start_index, sel_end_para, sel_end_index;
    Qt::TextFormat format;

    format = edit->textFormat();
    edit->setTextFormat( Qt::PlainText );

    edit->getCursorPosition( &para, &index ); // including preedit string

    // keep current selection
    edit->getSelection( &sel_start_para, &sel_start_index, &sel_end_para,
                        &sel_end_index, 0 );

    preedit_len = mIc->getPreeditString().length();
    preedit_cursor_pos = mIc->getPreeditCursorPosition();
    n_para = edit->paragraphs();

    switch ( origin ) {
    case UTextOrigin_Cursor:
        start_index = index - preedit_cursor_pos;
        start_para = para;
        end_index = start_index + preedit_len;
        end_para = para;

        if ( former_req_len >= 0 ) {
            for ( int i = 0; i < former_req_len; i++ )
                Q3TextEditPositionBackward( &start_para, &start_index );
        } else {
            if ( former_req_len == UTextExtent_Line )
                start_index = 0;
            else if ( former_req_len == UTextExtent_Full ) {
                start_para = 0;
                start_index = 0;
            } else {
                edit->setTextFormat( format );
                return -1;
            }
        }
        edit->setSelection( start_para, start_index, para, index - preedit_cursor_pos, 0 );
        *former = strdup( edit->selectedText().toUtf8().data() );

        if ( latter_req_len >= 0 ) {
            for ( int i = 0; i < latter_req_len; i++ )
                Q3TextEditPositionForward( &end_para, &end_index );
        } else {
            if ( latter_req_len == UTextExtent_Line ) {
                end_index = edit->paragraphLength( end_para );
            } else if ( latter_req_len == UTextExtent_Full ) {
                end_para = n_para - 1;
                end_index = edit->paragraphLength( end_para );
            } else {
                edit->setTextFormat( format );
                return -1;
            }
        }
        edit->setSelection( para, index - preedit_cursor_pos + preedit_len,
                            end_para, end_index, 0 );
        *latter = strdup( edit->selectedText().toUtf8().data() );
        break;

    case UTextOrigin_Beginning:
        *former = 0;

        start_para = 0;
        start_index = 0;
        end_para = start_para;
        end_index = start_index;

        if ( latter_req_len >= 0 ) {
            for ( int i = 0; i < latter_req_len; i++ )
                Q3TextEditPositionForward( &end_para, &end_index );
        } else {
            if ( latter_req_len == UTextExtent_Line )
                end_index = edit->paragraphLength( end_para );
            else if ( latter_req_len == UTextExtent_Full ) {
                end_para = n_para - 1;
                end_index = edit->paragraphLength( end_para );
            } else {
                edit->setTextFormat( format );
                return -1;
            }
        }
        if ( end_para < para || ( end_para == para && end_index <= ( index - preedit_cursor_pos ) ) ) {
            edit->setSelection( start_para, start_index, end_para, end_index, 0 );
            text = edit->selectedText();
        } else {
            edit->setSelection( start_para, start_index, para, index - preedit_cursor_pos, 0 );
            text = edit->selectedText();
            edit->setSelection( para, index - preedit_cursor_pos + preedit_len, end_para, end_index, 0 );
            text += edit->selectedText();
        }
        *latter = strdup( text.toUtf8().data() );
        break;

    case UTextOrigin_End:

        end_para = n_para - 1;
        end_index = edit->paragraphLength( end_para );
        start_para = end_para;
        start_index = end_index;

        if ( former_req_len >= 0 ) {
            for ( int i = 0; i < former_req_len; i++ )
                Q3TextEditPositionBackward( &start_para, &start_index );
        } else {
            if ( former_req_len == UTextExtent_Line )
                start_index = 0;
            else if ( former_req_len == UTextExtent_Full ) {
                start_para = 0;
                start_index = 0;
            } else {
                edit->setTextFormat( format );
                return -1;
            }
        }
        if ( start_para > para || ( start_para == para && start_index >= ( index - preedit_cursor_pos + preedit_len ) ) ) {
            edit->setSelection( start_para, start_index, end_para, end_index, 0 );
            text = edit->selectedText();
        } else {

            edit->setSelection( start_para, start_index, para, index - preedit_cursor_pos, 0 );
            text = edit->selectedText();

            edit->setSelection( para, index - preedit_cursor_pos + preedit_len, end_para, end_index, 0 );
            text += edit->selectedText();
        }
        *former = strdup( text.toUtf8().data() );
        *latter = 0;
        break;

    case UTextOrigin_Unspecified:
    default:
        edit->setTextFormat( format );
        return -1;
    }

    if ( sel_start_para != -1 && sel_start_index != -1 && sel_end_para != -1 &&
         sel_end_index != -1 )
        edit->setSelection( sel_start_index, sel_start_index, sel_end_para, sel_end_index, 0 );
    else
        edit->removeSelection( 0 );

    edit->setCursorPosition( para, index );

    edit->setTextFormat( format );
    return 0; 
}
Exemplo n.º 7
0
int
QUimTextUtil::deleteSelectionTextInQ3TextEdit( enum UTextOrigin origin,
                                               int former_req_len,
                                               int latter_req_len )
{
    Q3TextEdit *edit = static_cast<Q3TextEdit *>( mWidget );
    QString text;
    int len, newline;
    int para, index;
    int sel_para_from, sel_index_from, sel_para_to, sel_index_to;
    int start_para, start_index, end_para, end_index;
    bool cursor_at_beginning = false;

    if ( ! edit->hasSelectedText() )
        return -1;

    edit->getCursorPosition( &para, &index );
    edit->getSelection( &sel_para_from, &sel_index_from, &sel_para_to, &sel_index_to, 0 );

    if ( para == sel_para_from && index == sel_index_from )
        cursor_at_beginning = true;

    text = edit->selectedText();
    len = text.length();

    start_para = sel_para_from;
    start_index = sel_index_from;
    end_para = sel_para_to;
    end_index = sel_index_to;

    if ( origin == UTextOrigin_Beginning ||
         ( origin == UTextOrigin_Cursor && cursor_at_beginning ) ) {
        edit->setCursorPosition( sel_para_from, sel_index_from );
        if ( latter_req_len >= 0 ) {
            if ( len > latter_req_len ) {
                end_para = sel_para_from;
                end_index = sel_index_from;
                for ( int i = 0; i < latter_req_len; i++)
                    Q3TextEditPositionForward( &end_para, &end_index );
            }
        } else {
            if (! ( ~latter_req_len & ( ~UTextExtent_Line | ~UTextExtent_Full ) ) )
                return -1;

            if ( latter_req_len == UTextExtent_Line && ( ( newline = text.indexOf('\n') ) != -1 ) ) {
                end_para = sel_para_from;
                end_index = sel_index_from + newline;
            }
        }
    } else if ( origin == UTextOrigin_End ||
                ( origin == UTextOrigin_Cursor && !cursor_at_beginning ) ) {
        if ( former_req_len >= 0 ) {
            if ( len > former_req_len ) {
                start_para = sel_para_to;
                start_index = sel_index_to;
                for ( int i = 0; i < former_req_len; i++)
                    Q3TextEditPositionBackward( &start_para, &start_index );
            }
        } else {
            if (! ( ~former_req_len & ( ~UTextExtent_Line | ~UTextExtent_Full ) ) )
                return -1;

            if ( former_req_len == UTextExtent_Line && ( ( newline = text.lastIndexOf( '\n' ) ) != -1 ) ) {
                start_para = sel_para_to;
                start_index = 0;
            }
        }
    } else {
        return -1;
    }
    edit->setSelection( start_para, start_index, end_para, end_index, 1 );
    edit->removeSelectedText( 1 );

    return 0;
}
Exemplo n.º 8
0
int
QUimTextUtil::deletePrimaryTextInQ3TextEdit( enum UTextOrigin origin,
                                             int former_req_len,
                                             int latter_req_len )
{
    Q3TextEdit *edit = static_cast<Q3TextEdit *>( mWidget );
    int start_para, start_index, end_para, end_index, para, index;
    int n_para;

    savePreedit();

    edit->getCursorPosition( &para, &index );
    n_para = edit->paragraphs();

    switch ( origin ) {
    case UTextOrigin_Cursor:
        start_index = index;
        start_para = para;
        end_index = start_index;
        end_para = para;

        if ( former_req_len >= 0 ) {
            for ( int i = 0; i < former_req_len; i++ )
                Q3TextEditPositionBackward( &start_para, &start_index );
        } else {
            if ( former_req_len == UTextExtent_Line ) {
                start_index = 0;
            } else if ( former_req_len == UTextExtent_Full ) {
                start_para = 0;
                start_index = 0;
            } else {
                restorePreedit();
                return -1;
            }
        }
        if ( latter_req_len >= 0 ) {
            for ( int i = 0; i < latter_req_len; i++ )
                Q3TextEditPositionForward( &end_para, &end_index );
        } else {
            if ( latter_req_len == UTextExtent_Line ) {
                end_index = edit->paragraphLength( end_para );
            } else if ( latter_req_len == UTextExtent_Full ) {
                end_para = n_para - 1;
                end_index = edit->paragraphLength( end_para );
            } else {
                restorePreedit();
                return -1;
            }
        }
        break;

    case UTextOrigin_Beginning:
        start_para = 0;
        start_index = 0;
        end_para = start_para;
        end_index = start_index;

        if ( latter_req_len >= 0 ) {
            for ( int i = 0; i < latter_req_len; i++ )
                Q3TextEditPositionForward( &end_para, &end_index );
        } else {
            if ( latter_req_len == UTextExtent_Line ) {
                end_index = edit->paragraphLength( end_para );
            } else if ( latter_req_len == UTextExtent_Full ) {
                end_para = n_para - 1;
                end_index = edit->paragraphLength( end_para );
            } else {
                restorePreedit();
                return -1;
            }
        }
        break;

    case UTextOrigin_End:
        end_para = n_para - 1;
        end_index = edit->paragraphLength( end_para );
        start_para = end_para;
        start_index = end_index;

        if ( former_req_len >= 0 ) {
            for ( int i = 0; i < former_req_len; i++ )
                Q3TextEditPositionBackward( &start_para, &start_index );
        } else {
            if ( former_req_len == UTextExtent_Line )
                start_index = 0;
            else if ( former_req_len == UTextExtent_Full ) {
                start_para = 0;
                start_index = 0;
            } else {
                restorePreedit();
                return -1;
            }
        }
        break;

    case UTextOrigin_Unspecified:
    default:
        restorePreedit();
        return -1;
    }
    edit->setSelection( start_para, start_index, end_para, end_index, 1 );
    edit->removeSelectedText( 1 );
    edit->setCursorPosition( start_para, start_index );
    restorePreedit();

    return 0; 
}