LANG: fully reviewed getNewValueFromButtonSelection2

plugin_ide.ui/src-lang/melnorme/lang/ide/ui/dialogs/LangProjectWizardFirstPage.java

@@ -32,7 +32,6 @@
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Composite;
-import org.eclipse.swt.widgets.DirectoryDialog;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Link;
 import org.eclipse.ui.dialogs.PreferencesUtil;
@@ -49,8 +48,10 @@
 import melnorme.util.swt.SWTFactoryUtil;
 import melnorme.util.swt.SWTUtil;
 import melnorme.util.swt.components.AbstractComponent;
+import melnorme.util.swt.components.fields.DirectoryTextField;
 import melnorme.util.swt.components.fields.EnablementButtonTextField;
 import melnorme.util.swt.components.fields.TextFieldComponent;
+import melnorme.utilbox.concurrency.OperationCancellation;
 import melnorme.utilbox.core.CommonException;
 import melnorme.utilbox.fields.IFieldValueListener;
 import melnorme.utilbox.misc.StringUtil;
@@ -277,12 +278,8 @@ protected void createContents_Label(Composite parent) {
 		}
 
 		@Override
-		protected String getNewValueFromButtonSelection() {
-			DirectoryDialog dialog = new DirectoryDialog(button.getShell());
-			if(!getFieldValue().isEmpty()) {
-				dialog.setFilterPath(getFieldValue());
-			}
-			return dialog.open();
+		protected String getNewValueFromButtonSelection2() throws OperationCancellation {
+			return DirectoryTextField.openDirectoryDialog(getFieldValue(), button.getShell());
 		}
 
 	}

plugin_ide.ui/src-lang/melnorme/lang/ide/ui/fields/ArgumentsGroupField.java

@@ -57,7 +57,7 @@ protected void createContents_layout() {
 	/* -----------------  ----------------- */
 
 	@Override
-	protected String getNewValueFromButtonSelection() throws OperationCancellation {
+	protected String getNewValueFromButtonSelection2() throws OperationCancellation {
 		return getFieldValue() + ControlUtils.openStringVariableSelectionDialog(text.getShell());
 	}
 

plugin_ide.ui/src-lang/melnorme/lang/ide/ui/fields/ProjectField.java

@@ -26,6 +26,7 @@
 import melnorme.lang.ide.ui.LangUIPlugin;
 import melnorme.util.swt.SWTFactoryUtil;
 import melnorme.util.swt.components.fields.ButtonTextField;
+import melnorme.utilbox.concurrency.OperationCancellation;
 
 /**
  * A field whose main value is a project name from the Eclipse workspace.
@@ -69,12 +70,12 @@ protected void createContents_Label(Composite parent) {
 	/* -----------------  ----------------- */
 
 	@Override
-	protected String getNewValueFromButtonSelection() {
+	protected String getNewValueFromButtonSelection2() throws OperationCancellation {
 		IProject project = chooseProject();
 		return project == null ? null : project.getName();
 	}
 
-	protected IProject chooseProject() {
+	protected IProject chooseProject() throws OperationCancellation {
 		Shell shell = button.getShell();
 		ElementListSelectionDialog dialog = new ElementListSelectionDialog(shell, new WorkbenchLabelProvider());
 		dialog.setTitle(LangUIMessages.projectField_chooseProject_title);
@@ -95,8 +96,7 @@ protected IProject chooseProject() {
 		if (dialog.open() == Window.OK) {
 			return (IProject) dialog.getFirstResult();
 		}
-
-		return null;
+		throw new OperationCancellation();
 	}
 
 	protected IProject[] getDialogChooseElements() throws CoreException {

plugin_ide.ui/src-lang/melnorme/lang/ide/ui/fields/ProjectRelativePathField.java

@@ -17,6 +17,7 @@
 import melnorme.lang.ide.ui.LangUIMessages;
 import melnorme.lang.ide.ui.utils.ControlUtils;
 import melnorme.util.swt.components.fields.EnablementButtonTextField;
+import melnorme.utilbox.concurrency.OperationCancellation;
 import melnorme.utilbox.core.CommonException;
 import melnorme.utilbox.core.fntypes.CommonGetter;
 
@@ -38,7 +39,7 @@ public ProjectRelativePathField(String labelText, String useDefaultField_Label,
 	}
 
 	@Override
-	protected String getNewValueFromButtonSelection() throws CommonException {
+	protected String getNewValueFromButtonSelection2() throws CommonException, OperationCancellation {
 		return ControlUtils.openProgramPathDialog(projectGetter.get(), button);
 	}
 

plugin_ide.ui/src-lang/melnorme/lang/ide/ui/preferences/BuildTargetSettingsComponent.java

@@ -127,7 +127,7 @@ protected String getDefaultFieldValue() throws CommonException {
 		}
 
 		@Override
-		protected String getNewValueFromButtonSelection() throws OperationCancellation {
+		protected String getNewValueFromButtonSelection2() throws OperationCancellation {
 			return getFieldValue() + ControlUtils.openStringVariableSelectionDialog(text.getShell());
 		}
 
@@ -149,7 +149,7 @@ protected String getDefaultFieldValue() throws CommonException {
 		}
 
 		@Override
-		protected String getNewValueFromButtonSelection() throws CommonException, OperationCancellation {
+		protected String getNewValueFromButtonSelection2() throws CommonException, OperationCancellation {
 			return getFieldValue() + ControlUtils.openStringVariableSelectionDialog(text.getShell());
 		}
 

plugin_ide.ui/src-lang/melnorme/lang/ide/ui/utils/ControlUtils.java

@@ -22,6 +22,7 @@
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Link;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Text;
@@ -44,6 +45,19 @@ public static void createHorizontalSpacer(Composite topControl, int charHeight,
 			GridDataFactory.fillDefaults().hint(pc.convertHeightInCharsToPixels(charHeight), SWT.DEFAULT).create());
 	}
 
+
+	public static String openFileDialog(String initialValue, Shell shell) throws OperationCancellation {
+		FileDialog dialog = new FileDialog(shell);
+		if(!initialValue.isEmpty()) {
+			dialog.setFilterPath(initialValue);
+		}
+		String result = dialog.open();
+		if(result == null) {
+			throw new OperationCancellation();
+		}
+		return result;
+	}
+
 	public static Link createOpenPreferencesDialogLink(final Composite topControl, String linkText) {
 		Link link = new Link(topControl, SWT.NONE);
 		link.setText(linkText);
@@ -76,19 +90,19 @@ public static String openStringVariableSelectionDialog(final Shell shell) throws
 		return result;
 	}
 
-	public static String openProgramPathDialog(IProject project, Button button) {
+	public static String openProgramPathDialog(IProject project, Button button) throws OperationCancellation {
 		ElementTreeSelectionDialog dialog = new ElementTreeSelectionDialog(
 			button.getShell(), new WorkbenchLabelProvider(), new WorkbenchContentProvider());
 		dialog.setTitle(LangUIMessages.ProgramPathDialog_title);
 		dialog.setMessage(LangUIMessages.ProgramPathDialog_message);
 
 		dialog.setInput(project);
 		dialog.setComparator(new ResourceComparator(ResourceComparator.NAME));
-		if (dialog.open() == IDialogConstants.OK_ID) {
+		if(dialog.open() == IDialogConstants.OK_ID) {
 			IResource resource = (IResource) dialog.getFirstResult();
 			return resource.getProjectRelativePath().toPortableString();
 		}
-		return null;
+		throw new OperationCancellation();
 	}
 
 	public static <T> T setElementsAndOpenDialog(ElementListSelectionDialog elementListDialog, Indexable<T> configs) 

plugin_ide.ui/src-lang/melnorme/util/swt/components/fields/ButtonTextField.java

@@ -76,7 +76,7 @@ public void widgetSelected(SelectionEvent e) {
 
 	protected void handleButtonSelected() {
 		try {
-			String result = getNewValueFromButtonSelection();
+			String result = getNewValueFromButtonSelection2();
 			if(result != null) {
 				setFieldValue(result);
 			}
@@ -93,7 +93,7 @@ protected String getButtonOperationErrorMessage() {
 		return "Error:";
 	}
 
-	protected abstract String getNewValueFromButtonSelection() 
+	protected abstract String getNewValueFromButtonSelection2() 
 			throws CoreException, CommonException, OperationCancellation;
 
 	@Override

plugin_ide.ui/src-lang/melnorme/util/swt/components/fields/DirectoryTextField.java

@@ -13,6 +13,8 @@
 import org.eclipse.swt.widgets.DirectoryDialog;
 import org.eclipse.swt.widgets.Shell;
 
+import melnorme.utilbox.concurrency.OperationCancellation;
+
 public class DirectoryTextField extends ButtonTextField {
 
 	public DirectoryTextField(String label) {
@@ -24,16 +26,20 @@ public DirectoryTextField(String label, String buttonlabel) {
 	}
 
 	@Override
-	protected String getNewValueFromButtonSelection() {
+	protected String getNewValueFromButtonSelection2() throws OperationCancellation {
 		return openDirectoryDialog(getFieldValue(), button.getShell());
 	}
 
-	public static String openDirectoryDialog(String initialValue, Shell shell) {
+	public static String openDirectoryDialog(String initialValue, Shell shell) throws OperationCancellation {
 		DirectoryDialog dialog = new DirectoryDialog(shell);
 		if(!initialValue.isEmpty()) {
 			dialog.setFilterPath(initialValue);
 		}
-		return dialog.open();
+		String result = dialog.open();
+		if(result == null) {
+			throw new OperationCancellation();
+		}
+		return result;
 	}
 
 }

plugin_ide.ui/src-lang/melnorme/util/swt/components/fields/FileTextField.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2014, 2014 Bruno Medeiros and other Contributors.
+ * Copyright (c) 2014 Bruno Medeiros and other Contributors.
  * 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
@@ -10,8 +10,8 @@
  *******************************************************************************/
 package melnorme.util.swt.components.fields;
 
-import org.eclipse.swt.widgets.FileDialog;
-import org.eclipse.swt.widgets.Shell;
+import melnorme.lang.ide.ui.utils.ControlUtils;
+import melnorme.utilbox.concurrency.OperationCancellation;
 
 public class FileTextField extends ButtonTextField {
 
@@ -26,16 +26,8 @@ public FileTextField(String label, String buttonlabel) {
 	}
 
 	@Override
-	protected String getNewValueFromButtonSelection() {
-		return openFileDialog(getFieldValue(), button.getShell());
-	}
-
-	public String openFileDialog(String initialValue, Shell shell) {
-		FileDialog dialog = new FileDialog(shell);
-		if(!initialValue.isEmpty()) {
-			dialog.setFilterPath(initialValue);
-		}
-		return dialog.open();
+	protected String getNewValueFromButtonSelection2() throws OperationCancellation {
+		return ControlUtils.openFileDialog(getFieldValue(), button.getShell());
 	}
 
 }