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

Introduction

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

Prototype

public String getText() 

Source Link

Document

Returns the receiver's text, which will be an empty string if it has never been set or if the receiver is a SEPARATOR label.

Usage

From source file:org.eclipse.swt.snippets.Snippet278.java

public static void main(String[] args) {
    final Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 278");
    shell.setBounds(10, 10, 300, 100);//from   ww w.jav  a2s  . c  om
    shell.setLayout(new FillLayout());
    final Label label = new Label(shell, SWT.NONE);
    label.setText("resize the Shell then hover over this Label");
    label.addListener(SWT.MouseEnter, event -> {
        Point requiredSize = label.computeSize(SWT.DEFAULT, SWT.DEFAULT);
        Point labelSize = label.getSize();
        boolean fullyVisible = requiredSize.x <= labelSize.x && requiredSize.y <= labelSize.y;
        System.out.println("Label is fully visible: " + fullyVisible);
        label.setToolTipText(fullyVisible ? null : label.getText());
    });
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:org.eclipse.swt.snippets.Snippet340.java

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Snippet 340");
    shell.setLayout(new GridLayout());
    shell.setText("Description Relation Example");

    // (works with either a Label or a READ_ONLY Text)
    final Label liveLabel = new Label(shell, SWT.BORDER | SWT.READ_ONLY);
    //   final Text liveLabel = new Text(shell, SWT.BORDER | SWT.READ_ONLY);
    liveLabel.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
    liveLabel.setText("Live region messages go here");

    new Label(shell, SWT.NONE).setText("Type an integer from 1 to 4:");

    final Text textField = new Text(shell, SWT.SINGLE | SWT.BORDER);
    textField.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
    textField.addModifyListener(e -> {
        String textValue = textField.getText();
        String message = textValue + " is not valid input.";
        try {//w w  w . ja  v a2  s .  c o m
            int value = Integer.parseInt(textValue);
            switch (value) {
            case 1:
                message = "One for the money,";
                break;
            case 2:
                message = "Two for the show,";
                break;
            case 3:
                message = "Three to get ready,";
                break;
            case 4:
                message = "And four to go!";
                break;
            }
        } catch (NumberFormatException ex) {
        }
        liveLabel.setText(message);
        textField.getAccessible().sendEvent(ACC.EVENT_DESCRIPTION_CHANGED, null);
        textField.setSelection(0, textField.getCharCount());
    });
    textField.getAccessible().addRelation(ACC.RELATION_DESCRIBED_BY, liveLabel.getAccessible());
    liveLabel.getAccessible().addRelation(ACC.RELATION_DESCRIPTION_FOR, textField.getAccessible());
    textField.getAccessible().addAccessibleListener(new AccessibleAdapter() {
        @Override
        public void getDescription(AccessibleEvent event) {
            event.result = liveLabel.getText();
        }
    });

    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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From source file:Snippet78.java

public static void setDragDrop(final Label label) {

    Transfer[] types = new Transfer[] { TextTransfer.getInstance() };
    int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK;

    final DragSource source = new DragSource(label, operations);
    source.setTransfer(types);//from  w  w w . j  a v a  2 s. c  om
    source.addDragListener(new DragSourceListener() {
        public void dragStart(DragSourceEvent event) {
            event.doit = (label.getText().length() != 0);
        }

        public void dragSetData(DragSourceEvent event) {
            event.data = label.getText();
        }

        public void dragFinished(DragSourceEvent event) {
            if (event.detail == DND.DROP_MOVE)
                label.setText("");
        }
    });

    DropTarget target = new DropTarget(label, operations);
    target.setTransfer(types);
    target.addDropListener(new DropTargetAdapter() {
        public void drop(DropTargetEvent event) {
            if (event.data == null) {
                event.detail = DND.DROP_NONE;
                return;
            }
            label.setText((String) event.data);
        }
    });
}

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From source file:org.eclipse.swt.snippets.Snippet78.java

public static void setDragDrop(final Label label) {

    Transfer[] types = new Transfer[] { TextTransfer.getInstance() };
    int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK;

    final DragSource source = new DragSource(label, operations);
    source.setTransfer(types);// ww  w  . j a  va2  s  .c  o m
    source.addDragListener(new DragSourceListener() {
        @Override
        public void dragStart(DragSourceEvent event) {
            event.doit = (label.getText().length() != 0);
        }

        @Override
        public void dragSetData(DragSourceEvent event) {
            event.data = label.getText();
        }

        @Override
        public void dragFinished(DragSourceEvent event) {
            if (event.detail == DND.DROP_MOVE)
                label.setText("");
        }
    });

    DropTarget target = new DropTarget(label, operations);
    target.setTransfer(types);
    target.addDropListener(new DropTargetAdapter() {
        @Override
        public void drop(DropTargetEvent event) {
            if (event.data == null) {
                event.detail = DND.DROP_NONE;
                return;
            }
            label.setText((String) event.data);
        }
    });
}

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From source file:org.eclipse.swt.snippets.Snippet284.java

public static void setDragSource(final Label label) {
    int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK;
    final DragSource source = new DragSource(label, operations);
    source.setTransfer(URLTransfer.getInstance());
    source.addDragListener(new DragSourceListener() {
        @Override/*  ww w .j av  a  2 s.  c  om*/
        public void dragStart(DragSourceEvent e) {
        }

        @Override
        public void dragSetData(DragSourceEvent e) {
            e.data = label.getText();
        }

        @Override
        public void dragFinished(DragSourceEvent event) {
        }
    });
}

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From source file:GetInput.java

/**
 * Creates the main window's contents/*from   w w w.  j a  va2s.  c  o  m*/
 * 
 * @param parent the main window
 * @return Control
 */
protected Control createContents(Composite parent) {
    Composite composite = new Composite(parent, SWT.NONE);
    composite.setLayout(new GridLayout(1, false));

    // Create a label to display what the user typed in
    final Label label = new Label(composite, SWT.NONE);
    label.setText("This will display the user input from InputDialog");

    // Create the button to launch the error dialog
    Button show = new Button(composite, SWT.PUSH);
    show.setText("Get Input");
    show.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent event) {
            InputDialog dlg = new InputDialog(Display.getCurrent().getActiveShell(), "", "Enter 5-8 characters",
                    label.getText(), new LengthValidator());
            if (dlg.open() == Window.OK) {
                // User clicked OK; update the label with the input
                label.setText(dlg.getValue());
            }
        }
    });

    parent.pack();
    return composite;
}

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From source file:WordJumbles.java

public void setDropTarget(final Label label) {
    int operations = DND.DROP_MOVE;
    final DropTarget dropTarget = new DropTarget(label, operations);

    // Data should be transfered in plain text format.
    Transfer[] formats = new Transfer[] { TextTransfer.getInstance() };
    dropTarget.setTransfer(formats);// ww  w.  ja  va 2  s.c  o  m

    dropTarget.addDropListener(new DropTargetListener() {
        public void dragEnter(DropTargetEvent event) {
            // Does not accept any drop if the label has text on it.
            if (label.getText().length() != 0)
                event.detail = DND.DROP_NONE;
        }

        public void dragLeave(DropTargetEvent event) {
        }

        public void dragOperationChanged(DropTargetEvent event) {
        }

        public void dragOver(DropTargetEvent event) {
        }

        public void drop(DropTargetEvent event) {
            if (TextTransfer.getInstance().isSupportedType(event.currentDataType)) {
                String text = (String) event.data;
                label.setText(text);
                // Checks the result.
                check();
            }
        }

        public void dropAccept(DropTargetEvent event) {
        }
    });

    label.addDisposeListener(new DisposeListener() {
        public void widgetDisposed(DisposeEvent e) {
            dropTarget.dispose();
        }
    });
}

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From source file:WordJumbles.java

public void setDragSource(final Label label) {
    //   Allows text to be moved only.
    int operations = DND.DROP_MOVE;
    final DragSource dragSource = new DragSource(label, operations);

    // Data should be transfered in plain text format.
    Transfer[] formats = new Transfer[] { TextTransfer.getInstance() };
    dragSource.setTransfer(formats);/*  w  ww. j ava 2s .c  o m*/

    dragSource.addDragListener(new DragSourceListener() {
        public void dragStart(DragSourceEvent event) {
            // Disallows drags if text is not available.
            if (label.getText().length() == 0)
                event.doit = false;
        }

        public void dragSetData(DragSourceEvent event) {
            // Provides the text data.
            if (TextTransfer.getInstance().isSupportedType(event.dataType))
                event.data = label.getText();
        }

        public void dragFinished(DragSourceEvent event) {
            // Removes the text after the move operation.
            if (event.doit == true || event.detail == DND.DROP_MOVE) {
                label.setText("");
            }
        }
    });

    label.addDisposeListener(new DisposeListener() {
        public void widgetDisposed(DisposeEvent e) {
            dragSource.dispose();
        }
    });
}

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From source file:DNDExample.java

private void createDragSource() {
    if (dragSource != null)
        dragSource.dispose();/*from  w  ww .  j a v  a2  s. c  om*/
    dragSource = new DragSource(dragControl, dragOperation);
    dragSource.setTransfer(dragTypes);
    dragSource.addDragListener(new DragSourceListener() {
        public void dragFinished(org.eclipse.swt.dnd.DragSourceEvent event) {
            dragConsole.append(">>dragFinished\n");
            printEvent(event);
            dragDataText = dragDataRTF = dragDataHTML = null;
            dragDataFiles = null;
            if (event.detail == DND.DROP_MOVE) {
                switch (dragControlType) {
                case BUTTON_CHECK:
                case BUTTON_TOGGLE:
                case BUTTON_RADIO: {
                    Button b = (Button) dragControl;
                    b.setText("");
                    break;
                }
                case TABLE: {
                    Table table = (Table) dragControl;
                    TableItem[] items = table.getSelection();
                    for (int i = 0; i < items.length; i++) {
                        items[i].dispose();
                    }
                    break;
                }
                case TEXT: {
                    Text text = (Text) dragControl;
                    text.clearSelection();
                    break;
                }
                case TREE: {
                    Tree tree = (Tree) dragControl;
                    TreeItem[] items = tree.getSelection();
                    for (int i = 0; i < items.length; i++) {
                        items[i].dispose();
                    }
                    break;
                }
                case CANVAS: {
                    dragControl.setData("STRINGS", null);
                    dragControl.redraw();
                    break;
                }
                case LABEL: {
                    Label label = (Label) dragControl;
                    label.setText("");
                    break;
                }
                case LIST: {
                    List list = (List) dragControl;
                    int[] indices = list.getSelectionIndices();
                    list.remove(indices);
                    break;
                }
                }
            }
        }

        public void dragSetData(org.eclipse.swt.dnd.DragSourceEvent event) {
            dragConsole.append(">>dragSetData\n");
            printEvent(event);
            if (TextTransfer.getInstance().isSupportedType(event.dataType)) {
                event.data = dragDataText;
            }
            if (RTFTransfer.getInstance().isSupportedType(event.dataType)) {
                event.data = dragDataRTF;
            }
            if (HTMLTransfer.getInstance().isSupportedType(event.dataType)) {
                event.data = dragDataHTML;
            }
            if (FileTransfer.getInstance().isSupportedType(event.dataType)) {
                event.data = dragDataFiles;
            }
        }

        public void dragStart(org.eclipse.swt.dnd.DragSourceEvent event) {
            dragConsole.append(">>dragStart\n");
            printEvent(event);
            dragDataFiles = fileList.getItems();
            switch (dragControlType) {
            case BUTTON_CHECK:
            case BUTTON_TOGGLE:
            case BUTTON_RADIO: {
                Button b = (Button) dragControl;
                dragDataText = b.getSelection() ? "true" : "false";
                break;
            }
            case TABLE: {
                Table table = (Table) dragControl;
                TableItem[] items = table.getSelection();
                if (items.length == 0) {
                    event.doit = false;
                } else {
                    StringBuffer buffer = new StringBuffer();
                    for (int i = 0; i < items.length; i++) {
                        buffer.append(items[i].getText());
                        if (items.length > 1 && i < items.length - 1) {
                            buffer.append("\n");
                        }
                    }
                    dragDataText = buffer.toString();
                }
                break;
            }
            case TEXT: {
                Text text = (Text) dragControl;
                String s = text.getSelectionText();
                if (s.length() == 0) {
                    event.doit = false;
                } else {
                    dragDataText = s;
                }
                break;
            }
            case TREE: {
                Tree tree = (Tree) dragControl;
                TreeItem[] items = tree.getSelection();
                if (items.length == 0) {
                    event.doit = false;
                } else {
                    StringBuffer buffer = new StringBuffer();
                    for (int i = 0; i < items.length; i++) {
                        buffer.append(items[i].getText());
                        if (items.length > 1 && i < items.length - 1) {
                            buffer.append("\n");
                        }
                    }
                    dragDataText = buffer.toString();
                }
                break;
            }
            case CANVAS: {
                String[] strings = (String[]) dragControl.getData("STRINGS");
                if (strings == null || strings.length == 0) {
                    event.doit = false;
                } else {
                    StringBuffer buffer = new StringBuffer();
                    for (int i = 0; i < strings.length; i++) {
                        buffer.append(strings[i]);
                        if (strings.length > 1 && i < strings.length - 1) {
                            buffer.append("\n");
                        }
                    }
                    dragDataText = buffer.toString();
                }
                break;
            }
            case LABEL: {
                Label label = (Label) dragControl;
                String string = label.getText();
                if (string.length() == 0) {
                    event.doit = false;
                } else {
                    dragDataText = string;
                }
                break;
            }
            case LIST: {
                List list = (List) dragControl;
                String[] selection = list.getSelection();
                if (selection.length == 0) {
                    event.doit = false;
                } else {
                    StringBuffer buffer = new StringBuffer();
                    for (int i = 0; i < selection.length; i++) {
                        buffer.append(selection[i]);
                        if (selection.length > 1 && i < selection.length - 1) {
                            buffer.append("\n");
                        }
                    }
                    dragDataText = buffer.toString();
                }
                break;
            }
            default:
                throw new SWTError(SWT.ERROR_NOT_IMPLEMENTED);
            }
            if (dragDataText != null) {
                dragDataRTF = "{\\rtf1{\\colortbl;\\red255\\green0\\blue0;}\\cf1\\b " + dragDataText + "}";
                dragDataHTML = "<b>" + dragDataText + "</b>";
            }

            for (int i = 0; i < dragTypes.length; i++) {
                if (dragTypes[i] instanceof TextTransfer && dragDataText == null) {
                    event.doit = false;
                }
                if (dragTypes[i] instanceof RTFTransfer && dragDataRTF == null) {
                    event.doit = false;
                }
                if (dragTypes[i] instanceof HTMLTransfer && dragDataHTML == null) {
                    event.doit = false;
                }
                if (dragTypes[i] instanceof FileTransfer
                        && (dragDataFiles == null || dragDataFiles.length == 0)) {
                    event.doit = false;
                }
            }
        }
    });
}

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From source file:org.eclipse.swt.examples.dnd.DNDExample.java

private void createDragSource() {
    if (dragSource != null)
        dragSource.dispose();/*from  ww w . ja  va  2 s .  c om*/
    dragSource = new DragSource(dragControl, dragOperation);
    dragSource.setTransfer(dragTypes);
    dragSource.addDragListener(new DragSourceListener() {
        @Override
        public void dragFinished(org.eclipse.swt.dnd.DragSourceEvent event) {
            dragConsole.append(">>dragFinished\n");
            printEvent(event);
            dragDataText = dragDataRTF = dragDataHTML = dragDataURL = null;
            dragDataFiles = null;
            if (event.detail == DND.DROP_MOVE) {
                switch (dragControlType) {
                case BUTTON_CHECK:
                case BUTTON_TOGGLE:
                case BUTTON_RADIO: {
                    Button b = (Button) dragControl;
                    b.setText("");
                    break;
                }
                case STYLED_TEXT: {
                    StyledText text = (StyledText) dragControl;
                    text.insert("");
                    break;
                }
                case TABLE: {
                    Table table = (Table) dragControl;
                    TableItem[] items = table.getSelection();
                    for (TableItem item : items) {
                        item.dispose();
                    }
                    break;
                }
                case TEXT: {
                    Text text = (Text) dragControl;
                    text.insert("");
                    break;
                }
                case TREE: {
                    Tree tree = (Tree) dragControl;
                    TreeItem[] items = tree.getSelection();
                    for (TreeItem item : items) {
                        item.dispose();
                    }
                    break;
                }
                case CANVAS: {
                    dragControl.setData("STRINGS", null);
                    dragControl.redraw();
                    break;
                }
                case LABEL: {
                    Label label = (Label) dragControl;
                    label.setText("");
                    break;
                }
                case LIST: {
                    List list = (List) dragControl;
                    int[] indices = list.getSelectionIndices();
                    list.remove(indices);
                    break;
                }
                case COMBO: {
                    Combo combo = (Combo) dragControl;
                    combo.setText("");
                    break;
                }
                }
            }
        }

        @Override
        public void dragSetData(org.eclipse.swt.dnd.DragSourceEvent event) {
            dragConsole.append(">>dragSetData\n");
            printEvent(event);
            if (TextTransfer.getInstance().isSupportedType(event.dataType)) {
                event.data = dragDataText;
            }
            if (RTFTransfer.getInstance().isSupportedType(event.dataType)) {
                event.data = dragDataRTF;
            }
            if (HTMLTransfer.getInstance().isSupportedType(event.dataType)) {
                event.data = dragDataHTML;
            }
            if (URLTransfer.getInstance().isSupportedType(event.dataType)) {
                event.data = dragDataURL;
            }
            if (FileTransfer.getInstance().isSupportedType(event.dataType)) {
                event.data = dragDataFiles;
            }
        }

        @Override
        public void dragStart(org.eclipse.swt.dnd.DragSourceEvent event) {
            dragConsole.append(">>dragStart\n");
            printEvent(event);
            dragDataFiles = fileList.getItems();
            switch (dragControlType) {
            case BUTTON_CHECK:
            case BUTTON_TOGGLE:
            case BUTTON_RADIO: {
                Button b = (Button) dragControl;
                dragDataText = b.getSelection() ? "true" : "false";
                break;
            }
            case STYLED_TEXT: {
                StyledText text = (StyledText) dragControl;
                String s = text.getSelectionText();
                if (s.length() == 0) {
                    event.doit = false;
                } else {
                    dragDataText = s;
                }
                break;
            }
            case TABLE: {
                Table table = (Table) dragControl;
                TableItem[] items = table.getSelection();
                if (items.length == 0) {
                    event.doit = false;
                } else {
                    StringBuilder buffer = new StringBuilder();
                    for (int i = 0; i < items.length; i++) {
                        buffer.append(items[i].getText());
                        if (items.length > 1 && i < items.length - 1) {
                            buffer.append("\n");
                        }
                    }
                    dragDataText = buffer.toString();
                }
                break;
            }
            case TEXT: {
                Text text = (Text) dragControl;
                String s = text.getSelectionText();
                if (s.length() == 0) {
                    event.doit = false;
                } else {
                    dragDataText = s;
                }
                break;
            }
            case TREE: {
                Tree tree = (Tree) dragControl;
                TreeItem[] items = tree.getSelection();
                if (items.length == 0) {
                    event.doit = false;
                } else {
                    StringBuilder buffer = new StringBuilder();
                    for (int i = 0; i < items.length; i++) {
                        buffer.append(items[i].getText());
                        if (items.length > 1 && i < items.length - 1) {
                            buffer.append("\n");
                        }
                    }
                    dragDataText = buffer.toString();
                }
                break;
            }
            case CANVAS: {
                String[] strings = (String[]) dragControl.getData("STRINGS");
                if (strings == null || strings.length == 0) {
                    event.doit = false;
                } else {
                    StringBuilder buffer = new StringBuilder();
                    for (int i = 0; i < strings.length; i++) {
                        buffer.append(strings[i]);
                        if (strings.length > 1 && i < strings.length - 1) {
                            buffer.append("\n");
                        }
                    }
                    dragDataText = buffer.toString();
                }
                break;
            }
            case LABEL: {
                Label label = (Label) dragControl;
                String string = label.getText();
                if (string.length() == 0) {
                    event.doit = false;
                } else {
                    dragDataText = string;
                }
                break;
            }
            case LIST: {
                List list = (List) dragControl;
                String[] selection = list.getSelection();
                if (selection.length == 0) {
                    event.doit = false;
                } else {
                    StringBuilder buffer = new StringBuilder();
                    for (int i = 0; i < selection.length; i++) {
                        buffer.append(selection[i]);
                        if (selection.length > 1 && i < selection.length - 1) {
                            buffer.append("\n");
                        }
                    }
                    dragDataText = buffer.toString();
                }
                break;
            }
            case COMBO: {
                Combo combo = (Combo) dragControl;
                String string = combo.getText();
                Point selection = combo.getSelection();
                if (selection.x == selection.y) {
                    event.doit = false;
                } else {
                    dragDataText = string.substring(selection.x, selection.y);
                }
                break;
            }
            default:
                throw new SWTError(SWT.ERROR_NOT_IMPLEMENTED);
            }
            if (dragDataText != null) {
                dragDataRTF = "{\\rtf1{\\colortbl;\\red255\\green0\\blue0;}\\cf1\\b " + dragDataText + "}";
                dragDataHTML = "<b>" + dragDataText + "</b>";
                dragDataURL = "http://" + dragDataText.replace(' ', '.');
                try {
                    new URL(dragDataURL);
                } catch (MalformedURLException e) {
                    dragDataURL = null;
                }
            }

            for (Transfer dragType : dragTypes) {
                if (dragType instanceof TextTransfer && dragDataText == null) {
                    event.doit = false;
                }
                if (dragType instanceof RTFTransfer && dragDataRTF == null) {
                    event.doit = false;
                }
                if (dragType instanceof HTMLTransfer && dragDataHTML == null) {
                    event.doit = false;
                }
                if (dragType instanceof URLTransfer && dragDataURL == null) {
                    event.doit = false;
                }
                if (dragType instanceof FileTransfer && (dragDataFiles == null || dragDataFiles.length == 0)) {
                    event.doit = false;
                }
            }
        }
    });
}

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