content: /*******************************************************************************
   * Copyright (c) 2000, 2007 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.wst.jsdt.internal.ui.refactoring;
  
  import org.eclipse.core.runtime.Assert;
  import org.eclipse.jface.dialogs.Dialog;
  import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
  import org.eclipse.ltk.ui.refactoring.RefactoringWizard;
  import org.eclipse.ltk.ui.refactoring.UserInputWizardPage;
  import org.eclipse.swt.SWT;
  import org.eclipse.swt.events.ModifyEvent;
  import org.eclipse.swt.events.ModifyListener;
  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.Group;
  import org.eclipse.swt.widgets.Label;
  import org.eclipse.swt.widgets.Text;
  import org.eclipse.ui.PlatformUI;
  import org.eclipse.wst.jsdt.internal.corext.refactoring.code.PromoteTempToFieldRefactoring;
  import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
  import org.eclipse.wst.jsdt.internal.ui.dialogs.TextFieldNavigationHandler;
  import org.eclipse.wst.jsdt.internal.ui.refactoring.contentassist.ControlContentAssistHelper;
  import org.eclipse.wst.jsdt.internal.ui.refactoring.contentassist.FieldNameProcessor;
  
  public class PromoteTempWizard extends RefactoringWizard {
  
  	public PromoteTempWizard(PromoteTempToFieldRefactoring ref) {
  		super(ref, DIALOG_BASED_USER_INTERFACE | PREVIEW_EXPAND_FIRST_NODE);
  		setDefaultPageTitle(RefactoringMessages.ConvertLocalToField_title); 
  	}
  
  	/* non java-doc
  	 * @see RefactoringWizard#addUserInputPages
  	 */ 
  	protected void addUserInputPages(){
  		addPage(new PromoteTempInputPage());
  	}
  	
  	private static class PromoteTempInputPage extends UserInputWizardPage {
  
  		private static final String DESCRIPTION = RefactoringMessages.PromoteTempInputPage_description;
  		public static final String PAGE_NAME= "PromoteTempInputPage";//$NON-NLS-1$
  		private static final String[] RADIO_BUTTON_LABELS= {
  							RefactoringMessages.PromoteTempInputPage_Field_declaration, 
  							RefactoringMessages.PromoteTempInputPage_Current_method, 
  							RefactoringMessages.PromoteTempInputPage_constructors}; 
  		private static final Integer[] RADIO_BUTTON_DATA= {
  							Integer.valueOf(PromoteTempToFieldRefactoring.INITIALIZE_IN_FIELD),
  							Integer.valueOf(PromoteTempToFieldRefactoring.INITIALIZE_IN_METHOD),
  							Integer.valueOf(PromoteTempToFieldRefactoring.INITIALIZE_IN_CONSTRUCTOR)};
  		private Button fDeclareStaticCheckbox;
  		private Button fDeclareFinalCheckbox;
  		private Button[] fInitializeInRadioButtons;
  		private Text fNameField;
  	
  		public PromoteTempInputPage() {
  			super(PAGE_NAME);
  			setDescription(DESCRIPTION);
  		}
  
  		public void createControl(Composite parent) {
  			Composite result= new Composite(parent, SWT.NONE);
  			setControl(result);
  			GridLayout layout= new GridLayout();
  			layout.numColumns= 2;
  			layout.verticalSpacing= 8;
  			result.setLayout(layout);
  		
  			addFieldNameField(result);
  			addVisibilityControl(result);
  			addInitizeInRadioButtonGroup(result);
  			addDeclareStaticCheckbox(result);
  			addDeclareFinalCheckbox(result);
  				
  			Dialog.applyDialogFont(result);
  			PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IJavaHelpContextIds.PROMOTE_TEMP_TO_FIELD_WIZARD_PAGE);		
  		}
  
  		private void addFieldNameField(Composite result) {
  			Label nameLabel= new Label(result, SWT.NONE);
  			nameLabel.setText(RefactoringMessages.PromoteTempInputPage_Field_name); 
  			nameLabel.setLayoutData(new GridData());
  			
  			String[] guessedFieldNames= getPromoteTempRefactoring().guessFieldNames();
          
  			fNameField = new Text(result, SWT.BORDER | SWT.SINGLE);
  			fNameField.setText(guessedFieldNames[0]);
  			fNameField.selectAll();
  			fNameField.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
  			fNameField.addModifyListener(new ModifyListener(){
  				public void modifyText(ModifyEvent e) {
  					PromoteTempInputPage.this.getPromoteTempRefactoring().setFieldName(fNameField.getText());
  					PromoteTempInputPage.this.updateStatus();
  				}
  			});
  			IContentAssistProcessor processor= new FieldNameProcessor(guessedFieldNames, getPromoteTempRefactoring());
  			ControlContentAssistHelper.createTextContentAssistant(fNameField, processor);
  			TextFieldNavigationHandler.install(fNameField);
  		}
  
  		private void updateStatus() {
  			setPageComplete(getPromoteTempRefactoring().validateInput());
  		}
  
  		private void addInitizeInRadioButtonGroup(Composite result) {
  			GridData gd;		
  			Group initializeIn= new Group(result, SWT.NONE);
  			initializeIn.setText(RefactoringMessages.PromoteTempInputPage_Initialize); 
  			initializeIn.setLayout(new GridLayout());
  			gd= new GridData(GridData.FILL_HORIZONTAL);
  			gd.horizontalSpan= 2;
  			initializeIn.setLayoutData(gd);
          
  			Assert.isTrue(RADIO_BUTTON_LABELS.length == RADIO_BUTTON_DATA.length);
  			fInitializeInRadioButtons= new Button[RADIO_BUTTON_LABELS.length];
  			for (int i= 0; i < RADIO_BUTTON_LABELS.length; i++) {
  				Integer dataItem= RADIO_BUTTON_DATA[i];
  				fInitializeInRadioButtons[i]= new Button(initializeIn, SWT.RADIO);
  				fInitializeInRadioButtons[i].setEnabled(canEnable(dataItem.intValue()));
  				fInitializeInRadioButtons[i].setText(RADIO_BUTTON_LABELS[i]);
  				fInitializeInRadioButtons[i].setSelection(dataItem.intValue() == getPromoteTempRefactoring().getInitializeIn());
  				fInitializeInRadioButtons[i].setLayoutData(new GridData());
  				fInitializeInRadioButtons[i].setData(dataItem);
  				final int j= i;
  				fInitializeInRadioButtons[i].addSelectionListener(new SelectionAdapter(){
  					public void widgetSelected(SelectionEvent e) {
  						getPromoteTempRefactoring().setInitializeIn(getDataAsInt(fInitializeInRadioButtons[j]));
  						updateButtonsEnablement();
  					}
  				});
  			}				
  		}
  
  		private void updateButtonsEnablement() {
  			fDeclareFinalCheckbox.setEnabled(getPromoteTempRefactoring().canEnableSettingFinal());
  			fDeclareStaticCheckbox.setEnabled(getPromoteTempRefactoring().canEnableSettingStatic());
  			for (int i= 0; i < fInitializeInRadioButtons.length; i++) {
  				fInitializeInRadioButtons[i].setEnabled(canEnable(getDataAsInt(fInitializeInRadioButtons[i])));
  			}
  		}
      
  		private static int getDataAsInt(Button button){
  			return ((Integer)button.getData()).intValue();
  		}
      
  		private boolean canEnable(int initializeIn){
  			switch(initializeIn){
  				case PromoteTempToFieldRefactoring.INITIALIZE_IN_CONSTRUCTOR:
  					return getPromoteTempRefactoring().canEnableSettingDeclareInConstructors();
  				case PromoteTempToFieldRefactoring.INITIALIZE_IN_FIELD:
  					return getPromoteTempRefactoring().canEnableSettingDeclareInFieldDeclaration();
  				case PromoteTempToFieldRefactoring.INITIALIZE_IN_METHOD:
  					return getPromoteTempRefactoring().canEnableSettingDeclareInMethod();
  				default: Assert.isTrue(false); return false;		
  			}
  		}
  
  		public void addDeclareStaticCheckbox(Composite result) {
  			GridData gd;
  			fDeclareStaticCheckbox= new Button(result, SWT.CHECK);
  			fDeclareStaticCheckbox.setEnabled(getPromoteTempRefactoring().canEnableSettingStatic());
  			fDeclareStaticCheckbox.setSelection(getPromoteTempRefactoring().getDeclareStatic());
  			fDeclareStaticCheckbox.setText(RefactoringMessages.PromoteTempInputPage_declare_static); 
  			gd= new GridData(GridData.FILL_HORIZONTAL);
  			gd.horizontalSpan= 2;
  			fDeclareStaticCheckbox.setLayoutData(gd);
  			fDeclareStaticCheckbox.addSelectionListener(new SelectionAdapter(){
  				public void widgetSelected(SelectionEvent e) {
  					getPromoteTempRefactoring().setDeclareStatic(fDeclareStaticCheckbox.getSelection());
  					updateButtonsEnablement();
  				}
  			});
  		}
  
  		private void addDeclareFinalCheckbox(Composite result) {
  			GridData gd;
  			fDeclareFinalCheckbox= new Button(result, SWT.CHECK);
  			fDeclareFinalCheckbox.setEnabled(getPromoteTempRefactoring().canEnableSettingFinal());
  			fDeclareFinalCheckbox.setSelection(getPromoteTempRefactoring().getDeclareFinal());
  			fDeclareFinalCheckbox.setText(RefactoringMessages.PromoteTempInputPage_declare_final); 
  			gd= new GridData(GridData.FILL_HORIZONTAL);
  			gd.horizontalSpan= 2;
  			fDeclareFinalCheckbox.setLayoutData(gd);
  			fDeclareFinalCheckbox.addSelectionListener(new SelectionAdapter(){
  				public void widgetSelected(SelectionEvent e) {
  					getPromoteTempRefactoring().setDeclareFinal(fDeclareFinalCheckbox.getSelection());
  					updateButtonsEnablement();
  				}
  			});
  		}
  
  		private void addVisibilityControl(Composite result) {
  			int[] availableVisibilities= getPromoteTempRefactoring().getAvailableVisibilities();
  			int currectVisibility= getPromoteTempRefactoring().getVisibility();
  			IVisibilityChangeListener visibilityChangeListener= new IVisibilityChangeListener(){
  				public void visibilityChanged(int newVisibility) {
  					getPromoteTempRefactoring().setVisibility(newVisibility);
  				}
  
  				public void modifierChanged(int modifier, boolean isChecked) {
  				}
  			};
  			Composite visibilityComposite= VisibilityControlUtil.createVisibilityControl(result, visibilityChangeListener, availableVisibilities, currectVisibility);
  			GridData gd= new GridData(GridData.FILL_HORIZONTAL);
  			gd.horizontalSpan= 2;
  			visibilityComposite.setLayoutData(gd);
  		}
  
  		private PromoteTempToFieldRefactoring getPromoteTempRefactoring(){
  			return (PromoteTempToFieldRefactoring)getRefactoring();
  		}
  		/* (non-Javadoc)
  		 * @see org.eclipse.jface.dialogs.IDialogPage#setVisible(boolean)
  		 */
  		public void setVisible(boolean visible) {
  			super.setVisible(visible);
  			if (visible && fNameField != null)
  				fNameField.setFocus();
  		}
  
  	}
  }
  