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Find events in the same area dialog.
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239 changes: 239 additions & 0 deletions
239
src/main/java/io/github/albertus82/eqbulletin/gui/listener/ScaleInputDialog.java
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| package io.github.albertus82.eqbulletin.gui.listener; | ||
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| import org.eclipse.jface.dialogs.Dialog; | ||
| import org.eclipse.jface.dialogs.IDialogConstants; | ||
| import org.eclipse.jface.layout.GridDataFactory; | ||
| import org.eclipse.swt.SWT; | ||
| import org.eclipse.swt.events.FocusAdapter; | ||
| import org.eclipse.swt.events.FocusEvent; | ||
| import org.eclipse.swt.events.SelectionAdapter; | ||
| import org.eclipse.swt.events.SelectionEvent; | ||
| import org.eclipse.swt.layout.GridData; | ||
| import org.eclipse.swt.layout.GridLayout; | ||
| import org.eclipse.swt.widgets.Button; | ||
| import org.eclipse.swt.widgets.Composite; | ||
| import org.eclipse.swt.widgets.Control; | ||
| import org.eclipse.swt.widgets.Label; | ||
| import org.eclipse.swt.widgets.Scale; | ||
| import org.eclipse.swt.widgets.Shell; | ||
| import org.eclipse.swt.widgets.Text; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import io.github.albertus82.jface.Formatter; | ||
| import io.github.albertus82.jface.JFaceMessages; | ||
| import io.github.albertus82.jface.listener.IntegerVerifyListener; | ||
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| /** | ||
| * A simple input dialog for soliciting an input string from the user. | ||
| * <p> | ||
| * This concrete dialog class can be instantiated as is, or further subclassed | ||
| * as required. | ||
| * </p> | ||
| */ | ||
| public class ScaleInputDialog extends Dialog { | ||
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| private static final Logger log = LoggerFactory.getLogger(ScaleInputDialog.class); | ||
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| /** | ||
| * The title of the dialog. | ||
| */ | ||
| private String title; | ||
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| /** | ||
| * The message to display, or <code>null</code> if none. | ||
| */ | ||
| private String message; | ||
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| /** | ||
| * The input value; the empty string by default. | ||
| */ | ||
| private int value; | ||
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| private final int minimum; | ||
| private final int maximum; | ||
| private final int increment; | ||
| private final int pageIncrement; | ||
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| /** | ||
| * Ok button widget. | ||
| */ | ||
| private Button okButton; | ||
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| private Scale scale; | ||
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| /** | ||
| * Input text widget. | ||
| */ | ||
| private Text text; | ||
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|
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| /** | ||
| * Creates an input dialog with OK and Cancel buttons. Note that the dialog will | ||
| * have no visual representation (no widgets) until it is told to open. | ||
| * <p> | ||
| * Note that the <code>open</code> method blocks for input dialogs. | ||
| * </p> | ||
| * | ||
| * @param parentShell the parent shell, or <code>null</code> to create a | ||
| * top-level shell | ||
| * @param dialogTitle the dialog title, or <code>null</code> if none | ||
| * @param dialogMessage the dialog message, or <code>null</code> if none | ||
| * @param initialValue the initial input value, or <code>null</code> if none | ||
| * (equivalent to the empty string) | ||
| * @param validator an input validator, or <code>null</code> if none | ||
| */ | ||
| public ScaleInputDialog(final Shell parentShell, final String dialogTitle, final String dialogMessage, final int initialValue, final int minimum, final int maximum, final int increment, final int pageIncrement) { | ||
| super(parentShell); | ||
| this.title = dialogTitle; | ||
| message = dialogMessage; | ||
| value = initialValue; | ||
| this.minimum = minimum; | ||
| this.maximum = maximum; | ||
| this.increment = increment; | ||
| this.pageIncrement = pageIncrement; | ||
| } | ||
|
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| @Override | ||
| protected void buttonPressed(int buttonId) { | ||
| if (buttonId == IDialogConstants.OK_ID) { | ||
| value = scale.getSelection(); | ||
| } | ||
| super.buttonPressed(buttonId); | ||
| } | ||
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| @Override | ||
| protected void configureShell(final Shell shell) { | ||
| super.configureShell(shell); | ||
| if (title != null) { | ||
| shell.setText(title); | ||
| } | ||
| } | ||
|
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| @Override | ||
| protected void createButtonsForButtonBar(final Composite parent) { | ||
| // create OK and Cancel buttons by default | ||
| okButton = createButton(parent, IDialogConstants.OK_ID, JFaceMessages.get("lbl.button.ok"), true); | ||
| createButton(parent, IDialogConstants.CANCEL_ID, JFaceMessages.get("lbl.button.cancel"), false); | ||
| //do this here because setting the text will set enablement on the ok | ||
| // button | ||
| scale.setFocus(); | ||
| scale.setSelection(value); | ||
| } | ||
|
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| @Override | ||
| protected Control createDialogArea(final Composite parent) { | ||
| // create composite | ||
| final Composite composite = (Composite) super.createDialogArea(parent); | ||
| if (composite.getLayout() instanceof GridLayout) { | ||
| ((GridLayout) composite.getLayout()).numColumns += 3; | ||
| } | ||
| // create message | ||
| if (message != null) { | ||
| Label label = new Label(composite, SWT.WRAP); | ||
| label.setText(message); | ||
| final GridData data = new GridData(GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER); | ||
| data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.ENTRY_FIELD_WIDTH); | ||
| data.horizontalSpan += 3; | ||
| label.setLayoutData(data); | ||
| label.setFont(parent.getFont()); | ||
| } | ||
| scale = new Scale(composite, getScaleStyle()); | ||
| scale.setMinimum(minimum); | ||
| scale.setMaximum(maximum); | ||
| scale.setIncrement(increment); | ||
| scale.setPageIncrement(pageIncrement); | ||
| final GridData data = new GridData(GridData.FILL_HORIZONTAL); | ||
| data.verticalAlignment = GridData.FILL; | ||
| data.grabExcessHorizontalSpace = true; | ||
| scale.setLayoutData(data); | ||
| scale.addSelectionListener(new SelectionAdapter() { | ||
| @Override | ||
| public void widgetSelected(final SelectionEvent e) { | ||
| text.setText(Integer.toString(scale.getSelection())); | ||
| } | ||
| }); | ||
|
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| Label label = new Label(composite, SWT.NONE); | ||
| label.setText("\u00B1"); | ||
| GridDataFactory.swtDefaults().applyTo(label); | ||
| label.setFont(parent.getFont()); | ||
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| text = new Text(composite, SWT.BORDER | SWT.TRAIL); | ||
| final int widthHint = new Formatter(getClass()).computeWidth(text, Integer.toString(maximum).length(), SWT.NORMAL); | ||
| GridDataFactory.swtDefaults().align(SWT.FILL, SWT.CENTER).hint(widthHint, SWT.DEFAULT).applyTo(text); | ||
| text.setTextLimit(Integer.toString(maximum).length()); | ||
| text.setText(Integer.toString(value)); | ||
| text.addFocusListener(new TextFocusListener()); | ||
| text.addVerifyListener(new IntegerVerifyListener(false)); | ||
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| Label label2 = new Label(composite, SWT.NONE); | ||
| label2.setText("\u00B0"); | ||
| GridDataFactory.swtDefaults().applyTo(label2); | ||
| label2.setFont(parent.getFont()); | ||
|
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| applyDialogFont(composite); | ||
| return composite; | ||
| } | ||
|
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| /** | ||
| * Returns the ok button. | ||
| * | ||
| * @return the ok button | ||
| */ | ||
| protected Button getOkButton() { | ||
| return okButton; | ||
| } | ||
|
|
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| /** | ||
| * Returns the text area. | ||
| * | ||
| * @return the text area | ||
| */ | ||
| protected Scale getScale() { | ||
| return scale; | ||
| } | ||
|
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| /** | ||
| * Returns the string typed into this input dialog. | ||
| * | ||
| * @return the input string | ||
| */ | ||
| public Integer getValue() { | ||
| return value; | ||
| } | ||
|
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| /** | ||
| * Returns the style bits that should be used for the input text field. Defaults | ||
| * to a single line entry. Subclasses may override. | ||
| * | ||
| * @return the integer style bits that should be used when creating the input | ||
| * text | ||
| * | ||
| * @since 3.4 | ||
| */ | ||
| protected int getScaleStyle() { | ||
| return SWT.HORIZONTAL; | ||
| } | ||
|
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| protected class TextFocusListener extends FocusAdapter { | ||
| @Override | ||
| public void focusLost(final FocusEvent fe) { | ||
| try { | ||
| int textValue = Integer.parseInt(text.getText()); | ||
| if (textValue > maximum) { | ||
| textValue = maximum; | ||
| } | ||
| if (textValue < minimum) { | ||
| textValue = minimum; | ||
| } | ||
| text.setText(Integer.toString(textValue)); | ||
| scale.setSelection(textValue); | ||
| } | ||
| catch (final RuntimeException e) { | ||
| log.debug("Cannot update the selection (which is the value) of the scale:", e); | ||
| text.setText(Integer.toString(scale.getSelection())); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| } |
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