Examples with AccessibleActionAdapter org.eclipse.swt.accessibility.AccessibleActionAdapter used on opensource projects

Example 1 with AccessibleActionAdapter

use of org.eclipse.swt.accessibility.AccessibleActionAdapter in project eclipse.platform.swt by eclipse.

the class AccessibleActionExample method main.

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    shell.setText("Accessible Action Example");
    Button button = new Button(shell, SWT.PUSH);
    button.setText("Button");
    final Canvas customButton = new Canvas(shell, SWT.NONE) {

        @Override
        public Point computeSize(int wHint, int hHint, boolean changed) {
            GC gc = new GC(this);
            Point point = gc.stringExtent(buttonText);
            gc.dispose();
            point.x += MARGIN;
            point.y += MARGIN;
            return point;
        }
    };
    customButton.addPaintListener(e -> {
        Rectangle clientArea = customButton.getClientArea();
        Point stringExtent = e.gc.stringExtent(buttonText);
        int x = clientArea.x + (clientArea.width - stringExtent.x) / 2;
        int y = clientArea.y + (clientArea.height - stringExtent.y) / 2;
        e.gc.drawString(buttonText, x, y);
    });
    customButton.addMouseListener(MouseListener.mouseDownAdapter(e -> {
        int actionIndex = (e.button == 1) ? 0 : 1;
        customButtonAction(actionIndex);
    }));
    customButton.addKeyListener(new KeyAdapter() {

        @Override
        public void keyPressed(KeyEvent e) {
            int modifierKeys = e.stateMask & SWT.MODIFIER_MASK;
            if (modifierKeys == SWT.CTRL || modifierKeys == 0) {
                if (e.character == '1')
                    customButtonAction(0);
                else if (e.character == '2')
                    customButtonAction(1);
            }
        }
    });
    Accessible accessible = customButton.getAccessible();
    accessible.addAccessibleListener(new AccessibleAdapter() {

        @Override
        public void getName(AccessibleEvent e) {
            e.result = buttonText;
        }

        @Override
        public void getKeyboardShortcut(AccessibleEvent e) {
            // default action is 'action 1'
            e.result = "CTRL+1";
        }
    });
    accessible.addAccessibleControlListener(new AccessibleControlAdapter() {

        @Override
        public void getRole(AccessibleControlEvent e) {
            e.detail = ACC.ROLE_PUSHBUTTON;
        }
    });
    accessible.addAccessibleActionListener(new AccessibleActionAdapter() {

        @Override
        public void getActionCount(AccessibleActionEvent e) {
            e.count = 2;
        }

        @Override
        public void getName(AccessibleActionEvent e) {
            if (0 <= e.index && e.index <= 1) {
                if (e.localized) {
                    e.result = AccessibleActionExample.getResourceString("action" + e.index);
                } else {
                    // $NON-NLS-1$
                    e.result = "Action" + e.index;
                }
            }
        }

        @Override
        public void getDescription(AccessibleActionEvent e) {
            if (0 <= e.index && e.index <= 1) {
                e.result = AccessibleActionExample.getResourceString("action" + e.index + "description");
            }
        }

        @Override
        public void doAction(AccessibleActionEvent e) {
            if (0 <= e.index && e.index <= 1) {
                customButtonAction(e.index);
                e.result = ACC.OK;
            }
        }

        @Override
        public void getKeyBinding(AccessibleActionEvent e) {
            switch(e.index) {
                case 0:
                    e.result = "1;CTRL+1";
                    break;
                case 1:
                    e.result = "2;CTRL+2";
                    break;
                default:
                    e.result = null;
            }
        }
    });
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}