Java Code Examples for org.eclipse.swt.widgets.Control#setEnabled()

/**
 * Create the filter area
 *
 * @param parent
 *            The parent composite
 * @return The filter area composite
 */
public Composite createFilterArea(Composite parent) {
    Composite composite = new Composite(parent, SWT.NONE);
    composite.setLayout(new GridLayout(1, true));
    composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

    CheckboxTreeViewer treeViewer = createTreeViewer(composite);
    Control buttonComposite = createSelectionButtons(composite);
    GridData data = new GridData(GridData.FILL_BOTH);
    Tree treeWidget = treeViewer.getTree();
    treeWidget.setLayoutData(data);
    treeWidget.setFont(parent.getFont());
    if (fIsEmpty) {
        treeWidget.setEnabled(false);
        buttonComposite.setEnabled(false);
    }
    return composite;
}
 

public void setErrorMessage( String errorMessage )
{
	this.errorMessage = errorMessage;
	if ( errorMessageText != null && !errorMessageText.isDisposed( ) )
	{
		errorMessageText.setText( errorMessage == null ? " \n " : errorMessage ); //$NON-NLS-1$
		// Disable the error message text control if there is no error, or
		// no error text (empty or whitespace only). Hide it also to avoid
		// color change.
		// See https://bugs.eclipse.org/bugs/show_bug.cgi?id=130281
		boolean hasError = errorMessage != null
				&& ( StringConverter.removeWhiteSpaces( errorMessage ) ).length( ) > 0;
		errorMessageText.setEnabled( hasError );
		errorMessageText.setVisible( hasError );
		errorMessageText.getParent( ).update( );
		// Access the ok button by id, in case clients have overridden
		// button creation.
		// See https://bugs.eclipse.org/bugs/show_bug.cgi?id=113643
		Control button = getButton( IDialogConstants.OK_ID );
		if ( button != null )
		{
			button.setEnabled( errorMessage == null );
		}
	}
}
 

/**
 * Sets or clears the error message. If not <code>null</code>, the OK button
 * is disabled.
 * 
 * @param errorMessage
 *            the error message, or <code>null</code> to clear
 * @since 3.0
 */
public void setErrorMessage(String errorMessage) {
    this.errorMessage = errorMessage;
    if (errorMessageText != null && !errorMessageText.isDisposed()) {
        errorMessageText.setText(errorMessage == null ? " \n " : errorMessage); //$NON-NLS-1$
        // Disable the error message text control if there is no error, or
        // no error text (empty or whitespace only). Hide it also to avoid
        // color change. See https://bugs.eclipse.org/bugs/show_bug.cgi?id=130281
        boolean hasError = errorMessage != null && (StringConverter.removeWhiteSpaces(errorMessage)).length() > 0;
        errorMessageText.setEnabled(hasError);
        errorMessageText.setVisible(hasError);
        errorMessageText.getParent().update();
        // Access the ok button by id, in case clients have overridden
        // button creation. See https://bugs.eclipse.org/bugs/show_bug.cgi?id=113643
        Control button = getButton(IDialogConstants.OK_ID);
        if (button != null) {
            button.setEnabled(errorMessage == null);
        }
    }
}
 

private void setCompositeEnabled( Composite comp, boolean enabled ) {
  // TODO: move to TableView?
  comp.setEnabled( enabled );
  for ( Control child : comp.getChildren() ) {
    child.setEnabled( enabled );
  }
}
 

/**
 * Note: this method should NEVER be called directly. Always use setVisible (the visibility control is the only
 * place that should reference this method).
 * 
 * @param updateFocus
 *            indicates if the focus should be given to the editor
 */
/* default */void hideFindBar(boolean updateFocus)
{
	if (findBarGridData.exclude == false)
	{
		sashGridData.exclude = true;
		separatorGridData.exclude = true;
		findBarGridData.exclude = true;
		composite.layout();
		findBarFinder.resetIncrementalOffset();
		findBarFinder.resetScope();
		removeComboSearchOnTextChangeListener();
		statusLineManager.setMessage(false, StringUtil.EMPTY, null);
	}
	if (updateFocus)
	{
		textEditor.setFocus();
	}
	if (disableWhenHidden != null)
	{
		for (Control w : disableWhenHidden)
		{
			w.setEnabled(false);
		}
	}

	sourceViewer.getTextWidget().removeFocusListener(textViewerFocusListener);
}
 

private void restoreEnableState(Control w, Map h, String key) {
	if (w != null) {
		Boolean b = (Boolean) h.get(key);
		if (b != null) {
			w.setEnabled(b.booleanValue());
		}
	}
}
 

/**
 * ウィジェットを無効または有効にします。
 * 
 * @param widget
 * @param enabled
 */
public static void enable(Control widget, boolean enabled) {
    if (widget instanceof Composite) {
        Control[] controls = ((Composite) widget).getChildren();
        for (Control control : controls) {
            enable(control, enabled);
        }
    }
    widget.setEnabled(enabled);
}
 

@Override
public void widgetSelected(SelectionEvent e) {

	for (int i= 0; i < controls.length; i++) {
		Control control= controls[i];
		control.setEnabled(!control.getEnabled());
	}
	validate();
}
 

@Override
public void createPartControl ( final Composite parent )
{
    parent.setLayout ( new FillLayout ( SWT.VERTICAL ) );
    createControls ( parent );

    // disable all
    for ( final Control control : this.controls )
    {
        control.setEnabled ( false );
    }

    addListener ();
}
 

/**
 * Toggles enabled/disabled state of the OK button based state of the error messages.
 */
private void toggleOK(boolean enabled) {
	Control button = getButton(OK_ID);
	if (button != null) {
		button.setEnabled(enabled);
	}
}
 

/**
 * Enable or disable the widget, depending on the associated enabler
 */
public boolean enableOrDisable() {
	if (this.enabler == null) {
		return true;
	}

	final boolean enabled = this.enabler.isEnabled();
	for (final Control c : this.controls) {
		if (!c.isDisposed()) {
			c.setEnabled(enabled);
		}
	}
	return enabled;
}
 

/**
 * Sets or clears the error message. If not <code>null</code>, the OK button is disabled.
 * @param errorMessage
 *            the error message, or <code>null</code> to clear
 * @since 3.0
 */
public void setErrorMessage(String errorMessage) {
	this.errorMessage = errorMessage;
	if (errorMessageText != null && !errorMessageText.isDisposed()) {
		String msg = errorMessageText.getText();
		msg = msg == null ? "" : msg;
		errorMessageText.setText(errorMessage == null ? "" : errorMessage); //$NON-NLS-1$
		// Disable the error message text control if there is no error, or
		// no error text (empty or whitespace only). Hide it also to avoid
		// color change.
		// See https://bugs.eclipse.org/bugs/show_bug.cgi?id=130281
		boolean hasError = errorMessage != null && (StringConverter.removeWhiteSpaces(errorMessage)).length() > 0;
		errorMessageText.setEnabled(hasError);
		errorMessageText.setVisible(hasError);
		errorMessageText.getParent().update();
		String msg2 = errorMessageText.getText();
		if (!msg.equals(msg2) && initLocation != null && initSize != null) {
			Point p = getShell().computeSize(initSize.x, SWT.DEFAULT);
			getShell().setBounds(
					getConstrainedShellBounds(new Rectangle(initLocation.x, initLocation.y, initSize.x, p.y)));
		}
		// Access the ok button by id, in case clients have overridden button creation.
		// See https://bugs.eclipse.org/bugs/show_bug.cgi?id=113643
		Control button = getButton(IDialogConstants.OK_ID);
		if (button != null) {
			button.setEnabled(errorMessage == null);
		}
	}
}
 

/**
 * En-/disables the composite and its children.
 *
 * @param elem
 * @param val
 */
private static void setEnabled(final Composite elem, final boolean val) {
    elem.setEnabled(val);
    for (final Control c : elem.getChildren()) {
        if (c instanceof Composite) {
            setEnabled((Composite) c, val);
        } else {
            c.setEnabled(val);
        }
    }
}
 

private void deactivate(final Composite parent) {
	for (final Control c : parent.getChildren()) {
		if (c instanceof Composite) {
			deactivate((Composite) c);
		} else {
			c.setEnabled(false);
		}
	}
}
 

private void updateControlsEnableState(List<Control> controls, boolean enable) {
	for (int i= controls.size() - 1; i >= 0; i--) {
		Control curr= controls.get(i);
		if (curr instanceof Composite) {
			updateControlsEnableState(Arrays.asList(((Composite)curr).getChildren()), enable);
		}
		curr.setEnabled(enable);
	}
}
 

private void enableControls(boolean enabled) {
    for (Control control : attributes.getChildren()) {
        control.setEnabled(enabled);
    }
}
 

/**
 * 根据当前操作不同的数据库类型,初始化界面 ;
 */
private void initUI(boolean isAdd) {
	MetaData curDbMetaData = dbMetaDataMap.get(getCurrDbType());

	if (!isAdd) {
		Control[] childrens = locationText.getParent().getChildren();
		for (Control c : childrens) {
			if (!(c instanceof Composite)) {
				if (c instanceof Text || c instanceof Button) {
					c.setEnabled(false);
				}
			} else {
				Composite com = (Composite) c;
				Control[] ch = com.getChildren();
				for (Control chl : ch) {
					if (c instanceof Text || c instanceof Button) {
						chl.setEnabled(false);
					}
				}
			}
		}
	} else {
		if (curDbMetaData.dataPathSupported()) {
			locationText.setEnabled(true);
			borwserBtn.setEnabled(true);
		} else {
			locationText.setEnabled(false);
			borwserBtn.setEnabled(false);
		}

		if (curDbMetaData.serverNameSupported()) {
			hostText.setEnabled(true);
		} else {
			hostText.setEnabled(false);
		}

		if (curDbMetaData.instanceSupported()) {
			instanceText.setEnabled(true);
		} else {
			instanceText.setEnabled(false);
		}

		if (curDbMetaData.portSupported()) {
			portText.setEnabled(true);
		} else {
			portText.setEnabled(false);
		}

		if (curDbMetaData.userNameSupported()) {
			usernameText.setEnabled(true);
		} else {
			usernameText.setEnabled(false);
		}

		if (curDbMetaData.passwordSupported()) {
			passwordText.setEnabled(true);
		} else {
			passwordText.setEnabled(false);
		}
	}
}
 

/**
 * Restores the enabled/disabled state of the given control.
 * 
 * @param w
 *            the control
 * @param h
 *            the map (key type: <code>String</code>, element type:
 *            <code>Boolean</code>)
 * @param key
 *            the key
 * @see #saveEnableStateAndSet
 */
private void restoreEnableState(Control w, Map h, String key) {
	if (w != null) {
		Boolean b = (Boolean) h.get(key);
		if (b != null) {
			w.setEnabled(b.booleanValue());
		}
	}
}
 

/**
 * Enable ctrl.
 *
 * @param c the c
 * @param enabled the enabled
 */
protected static void enableCtrl(Control c, boolean enabled) {
  if (null != c)
    c.setEnabled(enabled);
}
 

/**
 * Disables the control.
 *
 * @param elem
 */
public static void disable(final Control elem) {
    elem.setEnabled(false);
}