/*******************************************************************************
* Copyright (c) 2000, 2011 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.internal.ui.actions.variables.details;
import org.eclipse.debug.internal.core.IInternalDebugCoreConstants;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.internal.ui.IDebugHelpContextIds;
import org.eclipse.debug.internal.ui.views.variables.VariablesViewMessages;
import org.eclipse.debug.ui.IDebugUIConstants;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jface.dialogs.TrayDialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.PlatformUI;
/**
* Provides a dialog for changing the maximum length allowed in the detail pane
*
* @since 3.0
*/
public class DetailPaneMaxLengthDialog extends TrayDialog {
private static final String SETTINGS_ID = DebugUIPlugin.getUniqueIdentifier() + ".MAX_DETAILS_LENGTH_DIALOG"; //$NON-NLS-1$
private Text fTextWidget;
private Text fErrorTextWidget;
private String fErrorMessage;
private String fValue;
private IInputValidator fValidator;
/**
* Constructs a new dialog on the given shell.
*
* @param parent shell
*/
public DetailPaneMaxLengthDialog(Shell parent) {
super(parent);
setShellStyle(getShellStyle() | SWT.RESIZE);
fValue = Integer.toString(DebugUIPlugin.getDefault().getPreferenceStore().getInt(IDebugUIConstants.PREF_MAX_DETAIL_LENGTH));
fValidator = new IInputValidator() {
@Override
public String isValid(String newText) {
try {
int num = Integer.parseInt(newText);
if (num < 0) {
return VariablesViewMessages.DetailPaneMaxLengthDialog_2;
}
} catch (NumberFormatException e) {
return VariablesViewMessages.DetailPaneMaxLengthDialog_3;
}
return null;
}
};
}
/* (non-Javadoc)
* @see org.eclipse.ui.dialogs.SelectionDialog#getDialogBoundsSettings()
*/
@Override
protected IDialogSettings getDialogBoundsSettings() {
IDialogSettings settings = DebugUIPlugin.getDefault().getDialogSettings();
IDialogSettings section = settings.getSection(SETTINGS_ID);
if (section == null) {
section = settings.addNewSection(SETTINGS_ID);
}
return section;
}
/* (non-Javadoc)
* @see org.eclipse.jface.dialogs.Dialog#createContents(org.eclipse.swt.widgets.Composite)
*/
@Override
protected Control createContents(Composite parent) {
getShell().setText(VariablesViewMessages.DetailPaneMaxLengthDialog_0);
Control contents = super.createContents(parent);
PlatformUI.getWorkbench().getHelpSystem().setHelp(getDialogArea(), IDebugHelpContextIds.DETAIL_PANE_MAX_LENGTH_ACTION);
return contents;
}
/* (non-Javadoc)
* @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
*/
@Override
protected Control createDialogArea(Composite parent) {
Composite composite = (Composite) super.createDialogArea(parent);
Label label = new Label(composite, SWT.WRAP);
label.setText(VariablesViewMessages.DetailPaneMaxLengthDialog_1);
GridData data = new GridData(GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER);
data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH);
label.setLayoutData(data);
label.setFont(parent.getFont());
fTextWidget = new Text(composite, SWT.SINGLE | SWT.BORDER);
fTextWidget.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL));
fTextWidget.setText(fValue);
fTextWidget.addModifyListener(new ModifyListener() {
@Override
public void modifyText(ModifyEvent e) {
validateInput();
fValue = fTextWidget.getText();
}
});
fErrorTextWidget = new Text(composite, SWT.READ_ONLY);
fErrorTextWidget.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL
| GridData.HORIZONTAL_ALIGN_FILL));
fErrorTextWidget.setBackground(fErrorTextWidget.getDisplay().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
setErrorMessage(fErrorMessage);
applyDialogFont(composite);
return composite;
}
/* (non-Javadoc)
* @see org.eclipse.jface.dialogs.Dialog#okPressed()
*/
@Override
protected void okPressed() {
String text = getValue();
try {
DebugUIPlugin.getDefault().getPreferenceStore().setValue(IDebugUIConstants.PREF_MAX_DETAIL_LENGTH, Integer.parseInt(text));
}
catch (NumberFormatException e) {
DebugUIPlugin.log(e);
}
super.okPressed();
}
/**
* Returns the string typed into this input dialog.
*
* @return the input string
* @since 3.3
*/
public String getValue() {
return fValue;
}
/**
* Validates the current input
* @since 3.3
*/
private void validateInput() {
String errorMessage = null;
if (fValidator != null) {
errorMessage = fValidator.isValid(fTextWidget.getText());
}
setErrorMessage(errorMessage);
}
/**
* Sets the current error message or none if null
* @param errorMessage the message to display
* @since 3.3
*/
public void setErrorMessage(String errorMessage) {
fErrorMessage = errorMessage;
if (fErrorTextWidget != null && !fErrorTextWidget.isDisposed()) {
fErrorTextWidget.setText(errorMessage == null ? IInternalDebugCoreConstants.EMPTY_STRING : errorMessage);
fErrorTextWidget.getParent().update();
// Access the ok button by id, in case clients have overridden button creation.
// See https://bugs.eclipse.org/bugs/show_bug.cgi?id=113643
Control button = getButton(IDialogConstants.OK_ID);
if (button != null) {
button.setEnabled(errorMessage == null);
}
}
}
}