/**
* Sets the contents of the receiver to the given string. If the receiver has style SINGLE and the
* argument contains multiple lines of text, the result of this operation is undefined and may
* vary from platform to platform.
*
* @param string the new text
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the string is null
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setText(String string) {
checkWidget();
TextUtils.setText(variant, topHandle, string, textLimit, this);
if (isDisposed()) return;
if (variant == TextUtils.TEXT_EDIT) {
OS.QScrollBar_setValue(OS.QAbstractScrollArea_verticalScrollBar(scrollAreaHandle), 0);
}
}
/**
* Sets the editable state.
*
* @param editable the new editable state
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setEditable(boolean editable) {
checkWidget();
style &= ~SWT.READ_ONLY;
if (!editable) {
style |= SWT.READ_ONLY;
}
TextUtils.setReadOnly(variant, topHandle, !editable);
}
boolean qt_event_keypress_pp(
int widgetHandle, int key, int modifier, int character, int nativeScanCode) {
// In QTextEdit key events normally come with QTextEdit handle (=scrollAreaHandle).
// KeyPress events may come with viewport widget handle (=handle) when Display.post()
// is used to generate the event. In this case just let the event through so that it is
// passed to QTextEdit in native side.
if (variant == TextUtils.TEXT_EDIT && widgetHandle != scrollAreaHandle) {
return false;
}
if (super.qt_event_keypress_pp(widgetHandle, key, modifier, character, nativeScanCode)) {
return true;
}
if (!(hooks(SWT.Verify) || filters(SWT.Verify)) && textLimit <= 0) {
return false;
}
Event keyEv = makeKeyEvent(key, modifier, character, nativeScanCode);
return TextUtils.handle_keypress(
variant, widgetHandle, key, modifier, character, keyEv, textLimit, this);
}
/**
* Pastes text from clipboard.
*
* <p>The selected text is deleted from the widget and new text inserted from the clipboard.
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void paste() {
TextUtils.paste(variant, topHandle, textLimit, this);
}
/**
* Inserts a string.
*
* <p>The old selection is replaced with the new text.
*
* @param string the string
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the string is <code>null</code>
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void insert(String string) {
checkWidget();
TextUtils.insert(variant, topHandle, string, textLimit, this);
}
/**
* Returns the widget text.
*
* <p>The text for a text widget is the characters in the widget, or an empty string if this has
* never been set.
*
* @return the widget text
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public String getText() {
checkWidget();
return TextUtils.getText(variant, topHandle);
}
/**
* Returns a <code>Point</code> whose x coordinate is the character position representing the
* start of the selected text, and whose y coordinate is the character position representing the
* end of the selection. An "empty" selection is indicated by the x and y coordinates having the
* same value.
*
* <p>Indexing is zero based. The range of a selection is from 0..N where N is the number of
* characters in the widget.
*
* @return a point representing the selection start and end
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public Point getSelection() {
checkWidget();
return TextUtils.getSelection(variant, topHandle);
}
/**
* Returns the editable state.
*
* @return whether or not the receiver is editable
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public boolean getEditable() {
checkWidget();
return !TextUtils.getReadOnly(variant, topHandle);
}
/**
* Returns the number of characters.
*
* @return number of characters in the widget
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public int getCharCount() {
checkWidget();
return TextUtils.getCharCount(variant, topHandle);
}
/**
* Returns the character position of the caret.
*
* <p>Indexing is zero based.
*
* @return the position of the caret
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public int getCaretPosition() {
checkWidget();
return TextUtils.getCaretPosition(variant, topHandle);
}
/**
* Cuts the selected text.
*
* <p>The current selection is first copied to the clipboard and then deleted from the widget.
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void cut() {
checkWidget();
TextUtils.cut(variant, topHandle, this);
}
/**
* Copies the selected text.
*
* <p>The current selection is copied to the clipboard.
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void copy() {
checkWidget();
TextUtils.copy(variant, topHandle);
}
/**
* Clears the selection.
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void clearSelection() {
checkWidget();
TextUtils.clearSelection(variant, topHandle);
}
/**
* Appends a string.
*
* <p>The new text is appended to the text at the end of the widget.
*
* @param string the string to be appended
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the string is null
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void append(String string) {
checkWidget();
TextUtils.append(variant, topHandle, string, textLimit, this);
}
/**
* Sets the selection to the range specified by the given start and end indices.
*
* <p>Indexing is zero based. The range of a selection is from 0..N where N is the number of
* characters in the widget.
*
* <p>Text selections are specified in terms of caret positions. In a text widget that contains N
* characters, there are N+1 caret positions, ranging from 0..N. This differs from other functions
* that address character position such as getText () that use the usual array indexing rules.
*
* @param start the start of the range
* @param end the end of the range
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setSelection(int start, int end) {
checkWidget();
TextUtils.setSelection(variant, topHandle, start, end);
}
/**
* Selects all the text in the receiver.
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void selectAll() {
checkWidget();
TextUtils.selectAll(variant, topHandle);
}
