1 files changed, 148 insertions, 0 deletions
diff --git a/org.openembedded.bc.ui/src/org/openembedded/bc/ui/wizards/FiniteStateWizardPage.java b/org.openembedded.bc.ui/src/org/openembedded/bc/ui/wizards/FiniteStateWizardPage.java
new file mode 100644
index 0000000..4a26d13
--- /dev/null
+++ b/org.openembedded.bc.ui/src/org/openembedded/bc/ui/wizards/FiniteStateWizardPage.java
@@ -0,0 +1,148 @@
+package org.openembedded.bc.ui.wizards;
+import java.util.Map;
+
+import org.eclipse.jface.viewers.ISelectionChangedListener;
+import org.eclipse.jface.viewers.SelectionChangedEvent;
+import org.eclipse.jface.wizard.WizardPage;
+import org.eclipse.swt.events.ModifyEvent;
+import org.eclipse.swt.events.ModifyListener;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Listener;
+
+public abstract class FiniteStateWizardPage extends WizardPage {
+    protected Map model = null;
+    protected FiniteStateWizard wizard = null;
+    private static boolean previousState = false;
+    /**
+     * @param pageName
+     */
+    protected FiniteStateWizardPage(String name, Map model) {
+        super(name);
+        this.model = model;
+        this.setPageComplete(false);
+    }
+
+    /*
+     * (non-Javadoc)
+     * 
+     * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite)
+     */
+    public abstract void createControl(Composite parent);
+
+    protected void setModelWizard() {
+        if (wizard == null) {
+            wizard = (FiniteStateWizard)FiniteStateWizardPage.this.getWizard();
+        }
+    }
+    
+    /**
+     * Add page validation logic here. Returning <code>true</code> means that
+     * the page is complete and the user can go to the next page.
+     * 
+     * @return
+     */
+    protected abstract boolean validatePage();
+
+    /**
+     * This method should be implemented by ModelWizardPage classes. This method
+     * is called after the <code>validatePage()</code> returns successfully.
+     * Update the model with the contents of the controls on the page.
+     */
+    protected abstract void updateModel();
+
+    /**
+     * Helper method to see if a field has some sort of text in it.
+     * @param value
+     * @return
+     */
+    protected boolean hasContents(String value) {
+        if (value == null || value.length() == 0) {
+            return false;
+        } 
+        
+        return true;
+    }
+    
+    /**
+     * This method is called right before a page is displayed.
+     * This occurs on user action (Next/Back buttons).
+     */
+    public abstract void pageDisplay();
+    
+	/**
+	 * This method is called on the concrete WizardPage after the user has
+	 * gone to the page after.
+	 */
+	public abstract void pageCleanup();
+	
+	/* (non-Javadoc)
+	 * @see org.eclipse.jface.dialogs.IDialogPage#setVisible(boolean)
+	 */
+	public void setVisible(boolean arg0) {
+	    
+		if (!arg0 && previousState) {
+			pageCleanup();
+		} else if (arg0 && !previousState) {
+			pageDisplay();
+		} else if (arg0 && previousState) {
+			pageDisplay();
+		}
+		
+		previousState = arg0;
+		
+		super.setVisible(arg0);
+	}
+	
+    public class ValidationListener implements SelectionListener, ModifyListener, Listener, ISelectionChangedListener {
+
+        /*
+         * (non-Javadoc)
+         * 
+         * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)
+         */
+        public void widgetSelected(SelectionEvent e) {
+            validate();
+        }
+
+        /*
+         * (non-Javadoc)
+         * 
+         * @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected(org.eclipse.swt.events.SelectionEvent)
+         */
+        public void widgetDefaultSelected(SelectionEvent e) {
+        }
+
+        /*
+         * (non-Javadoc)
+         * 
+         * @see org.eclipse.swt.events.ModifyListener#modifyText(org.eclipse.swt.events.ModifyEvent)
+         */
+        public void modifyText(ModifyEvent e) {
+            validate();
+        }
+
+        public void validate() {                       
+            if (validatePage()) {
+                updateModel();
+                setPageComplete(true);
+                return;
+            }
+
+            setPageComplete(false);
+        }
+
+        /* (non-Javadoc)
+         * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
+         */
+        public void handleEvent(Event event) {
+            validate();
+        }
+
+        public void selectionChanged(SelectionChangedEvent event) {
+            validate();
+        }
+    }
+}