Example usage for org.eclipse.swt.widgets Label setData

Introduction

In this page you can find the example usage for org.eclipse.swt.widgets Label setData.

Prototype

@Override
    public void setData(String key, Object value) 

Source Link

Usage

From source file:Snippet125.java

public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    final Table table = new Table(shell, SWT.BORDER);
    for (int i = 0; i < 20; i++) {
        TableItem item = new TableItem(table, SWT.NONE);
        item.setText("item " + i);
    }/* ww w. java  2s  .com*/
    // Disable native tooltip
    table.setToolTipText("");

    // Implement a "fake" tooltip
    final Listener labelListener = new Listener() {
        public void handleEvent(Event event) {
            Label label = (Label) event.widget;
            Shell shell = label.getShell();
            switch (event.type) {
            case SWT.MouseDown:
                Event e = new Event();
                e.item = (TableItem) label.getData("_TABLEITEM");
                // Assuming table is single select, set the selection as if
                // the mouse down event went through to the table
                table.setSelection(new TableItem[] { (TableItem) e.item });
                table.notifyListeners(SWT.Selection, e);
                // fall through
            case SWT.MouseExit:
                shell.dispose();
                break;
            }
        }
    };

    Listener tableListener = new Listener() {
        Shell tip = null;

        Label label = null;

        public void handleEvent(Event event) {
            switch (event.type) {
            case SWT.Dispose:
            case SWT.KeyDown:
            case SWT.MouseMove: {
                if (tip == null)
                    break;
                tip.dispose();
                tip = null;
                label = null;
                break;
            }
            case SWT.MouseHover: {
                TableItem item = table.getItem(new Point(event.x, event.y));
                if (item != null) {
                    if (tip != null && !tip.isDisposed())
                        tip.dispose();
                    tip = new Shell(shell, SWT.ON_TOP | SWT.TOOL);
                    tip.setLayout(new FillLayout());
                    label = new Label(tip, SWT.NONE);
                    label.setForeground(display.getSystemColor(SWT.COLOR_INFO_FOREGROUND));
                    label.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
                    label.setData("_TABLEITEM", item);
                    label.setText("tooltip " + item.getText());
                    label.addListener(SWT.MouseExit, labelListener);
                    label.addListener(SWT.MouseDown, labelListener);
                    Point size = tip.computeSize(SWT.DEFAULT, SWT.DEFAULT);
                    Rectangle rect = item.getBounds(0);
                    Point pt = table.toDisplay(rect.x, rect.y);
                    tip.setBounds(pt.x, pt.y, size.x, size.y);
                    tip.setVisible(true);
                }
            }
            }
        }
    };
    table.addListener(SWT.Dispose, tableListener);
    table.addListener(SWT.KeyDown, tableListener);
    table.addListener(SWT.MouseMove, tableListener);
    table.addListener(SWT.MouseHover, tableListener);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

---

From source file:org.eclipse.swt.snippets.Snippet125.java

public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Snippet 125");
    shell.setLayout(new FillLayout());
    final Table table = new Table(shell, SWT.BORDER);
    for (int i = 0; i < 20; i++) {
        TableItem item = new TableItem(table, SWT.NONE);
        item.setText("item " + i);
    }/*w w w. j  a v a2 s  .co m*/
    // Disable native tooltip
    table.setToolTipText("");

    // Implement a "fake" tooltip
    final Listener labelListener = event -> {
        Label label = (Label) event.widget;
        Shell shell1 = label.getShell();
        switch (event.type) {
        case SWT.MouseDown:
            Event e = new Event();
            e.item = (TableItem) label.getData("_TABLEITEM");
            // Assuming table is single select, set the selection as if
            // the mouse down event went through to the table
            table.setSelection(new TableItem[] { (TableItem) e.item });
            table.notifyListeners(SWT.Selection, e);
            shell1.dispose();
            table.setFocus();
            break;
        case SWT.MouseExit:
            shell1.dispose();
            break;
        }
    };

    Listener tableListener = new Listener() {
        Shell tip = null;
        Label label = null;

        @Override
        public void handleEvent(Event event) {
            switch (event.type) {
            case SWT.Dispose:
            case SWT.KeyDown:
            case SWT.MouseMove: {
                if (tip == null)
                    break;
                tip.dispose();
                tip = null;
                label = null;
                break;
            }
            case SWT.MouseHover: {
                TableItem item = table.getItem(new Point(event.x, event.y));
                if (item != null) {
                    if (tip != null && !tip.isDisposed())
                        tip.dispose();
                    tip = new Shell(shell, SWT.ON_TOP | SWT.NO_FOCUS | SWT.TOOL);
                    tip.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
                    FillLayout layout = new FillLayout();
                    layout.marginWidth = 2;
                    tip.setLayout(layout);
                    label = new Label(tip, SWT.NONE);
                    label.setForeground(display.getSystemColor(SWT.COLOR_INFO_FOREGROUND));
                    label.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
                    label.setData("_TABLEITEM", item);
                    label.setText(item.getText());
                    label.addListener(SWT.MouseExit, labelListener);
                    label.addListener(SWT.MouseDown, labelListener);
                    Point size = tip.computeSize(SWT.DEFAULT, SWT.DEFAULT);
                    Rectangle rect = item.getBounds(0);
                    Point pt = table.toDisplay(rect.x, rect.y);
                    tip.setBounds(pt.x, pt.y, size.x, size.y);
                    tip.setVisible(true);
                }
            }
            }
        }
    };
    table.addListener(SWT.Dispose, tableListener);
    table.addListener(SWT.KeyDown, tableListener);
    table.addListener(SWT.MouseMove, tableListener);
    table.addListener(SWT.MouseHover, tableListener);
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

---

From source file:TooltipTableItem.java

public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    final Table table = new Table(shell, SWT.BORDER);
    for (int i = 0; i < 20; i++) {
        TableItem item = new TableItem(table, SWT.NONE);
        item.setText("item " + i);
    }/*from ww  w  .j  a  v a2  s . co m*/
    // Disable native tooltip
    table.setToolTipText("");

    // Implement a "fake" tooltip
    final Listener labelListener = new Listener() {
        public void handleEvent(Event event) {
            Label label = (Label) event.widget;
            Shell shell = label.getShell();
            switch (event.type) {
            case SWT.MouseDown:
                Event e = new Event();
                e.item = (TableItem) label.getData("_TABLEITEM");
                // Assuming table is single select, set the selection as if
                // the mouse down event went through to the table
                table.setSelection(new TableItem[] { (TableItem) e.item });
                table.notifyListeners(SWT.Selection, e);
                shell.dispose();
                table.setFocus();
                break;
            case SWT.MouseExit:
                shell.dispose();
                break;
            }
        }
    };

    Listener tableListener = new Listener() {
        Shell tip = null;

        Label label = null;

        public void handleEvent(Event event) {
            switch (event.type) {
            case SWT.Dispose:
            case SWT.KeyDown:
            case SWT.MouseMove: {
                if (tip == null)
                    break;
                tip.dispose();
                tip = null;
                label = null;
                break;
            }
            case SWT.MouseHover: {
                TableItem item = table.getItem(new Point(event.x, event.y));
                if (item != null) {
                    if (tip != null && !tip.isDisposed())
                        tip.dispose();
                    tip = new Shell(shell, SWT.ON_TOP | SWT.NO_FOCUS | SWT.TOOL);
                    tip.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
                    FillLayout layout = new FillLayout();
                    layout.marginWidth = 2;
                    tip.setLayout(layout);
                    label = new Label(tip, SWT.NONE);
                    label.setForeground(display.getSystemColor(SWT.COLOR_INFO_FOREGROUND));
                    label.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
                    label.setData("_TABLEITEM", item);
                    label.setText(item.getText());
                    label.addListener(SWT.MouseExit, labelListener);
                    label.addListener(SWT.MouseDown, labelListener);
                    Point size = tip.computeSize(SWT.DEFAULT, SWT.DEFAULT);
                    Rectangle rect = item.getBounds(0);
                    Point pt = table.toDisplay(rect.x, rect.y);
                    tip.setBounds(pt.x, pt.y, size.x, size.y);
                    tip.setVisible(true);
                }
            }
            }
        }
    };
    table.addListener(SWT.Dispose, tableListener);
    table.addListener(SWT.KeyDown, tableListener);
    table.addListener(SWT.MouseMove, tableListener);
    table.addListener(SWT.MouseHover, tableListener);
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

---