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

Introduction

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

Prototype

public Object getData(String key) 

Source Link

Document

Returns the application defined property of the receiver with the specified name, or null if it has not been set.

Usage

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 . jav a  2 s .c  o  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();
}

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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);
    }//from w w w  .j  av  a2  s.  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();
}

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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   w w w.  j  av  a  2s.c o 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();
}

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