Add support for disabled items

Author: javier-godoy

src/main/java/com/flowingcode/addons/applayout/AppDrawer.java

@@ -72,11 +72,13 @@ private Component[] createComponents(List<MenuItem> menuItems) {
     		} else {
     			if (menuItem.getIcon()==null) {
     				PaperItem pi = new PaperItem(menuItem.getLabel(),menuItem.getCommand(), this);
+    				pi.setEnabled(menuItem.isEnabled());
     				components.add(pi);
     				menuItem.setRefreshCallback(()->pi.setText(menuItem.getLabel()));
     			} else {
     				PaperIconItem pi = new PaperIconItem(menuItem.getLabel(), menuItem.getIcon(),menuItem.getCommand(), this);
     				components.add(pi);
+    				pi.setEnabled(menuItem.isEnabled());
     				menuItem.setRefreshCallback(()->{
     					pi.setTitle(menuItem.getLabel());
     					pi.setIcon(menuItem.getIcon());
@@ -90,7 +92,9 @@ private Component[] createComponents(List<MenuItem> menuItems) {
 	private CollapseButton collectMenus(MenuItem topMenuItem) {
 		List<MenuItem> menuItems = topMenuItem.getSubMenuItems();
     	Component[] components = createComponents(menuItems);
-		return new CollapseButton(topMenuItem.getLabel(), topMenuItem.getIcon(), components);
+    	CollapseButton collapseButton = new CollapseButton(topMenuItem.getLabel(), topMenuItem.getIcon(), components);
+    	collapseButton.setEnabled(topMenuItem.isEnabled());
+    	return collapseButton;
 	}
 
 }

src/main/java/com/flowingcode/addons/applayout/AppToolbar.java

@@ -79,6 +79,7 @@ private List<PaperIconButton> createToolbarIconButtons(MenuItem[] menuItems) {
         List<PaperIconButton> result = new ArrayList<>();
         for (MenuItem menuItem : menuItems) {
                 PaperIconButton paperIconButton = new PaperIconButton(menuItem.getIcon(),menuItem.getCommand());
+               	paperIconButton.setEnabled(menuItem.isEnabled());
                 menuItem.setRefreshCallback(() -> paperIconButton.setIcon(menuItem.getIcon()));
                 result.add(paperIconButton);
         }

src/main/java/com/flowingcode/addons/applayout/PaperIconButton.java

@@ -21,6 +21,7 @@
  */
 
 import com.vaadin.flow.component.Component;
+import com.vaadin.flow.component.HasEnabled;
 import com.vaadin.flow.component.Tag;
 import com.vaadin.flow.component.dependency.HtmlImport;
 import com.vaadin.flow.server.Command;
@@ -34,8 +35,8 @@
 @SuppressWarnings("serial")
 @Tag("paper-icon-button")
 @HtmlImport("bower_components/paper-icon-button/paper-icon-button.html")
-public class PaperIconButton extends Component  {
-	
+public class PaperIconButton extends Component implements HasEnabled {
+
     public PaperIconButton(String icon) {
     	this.setIcon(icon);
     }

src/main/java/com/flowingcode/addons/applayout/PaperItem.java

@@ -21,6 +21,7 @@
  */
 
 import com.vaadin.flow.component.Component;
+import com.vaadin.flow.component.HasEnabled;
 import com.vaadin.flow.component.HasSize;
 import com.vaadin.flow.component.HasText;
 import com.vaadin.flow.component.Tag;
@@ -37,8 +38,8 @@
 @SuppressWarnings("serial")
 @HtmlImport("bower_components/paper-item/paper-item.html")
 @Tag("paper-item")
-public class PaperItem extends Component implements HasText, HasSize {
-	
+public class PaperItem extends Component implements HasEnabled, HasText, HasSize {
+
 	public PaperItem(String title) {
 		this(title, null,null);
 	}

src/main/java/com/flowingcode/addons/applayout/menu/MenuItem.java

@@ -39,6 +39,7 @@ public class MenuItem {
 	private Command command;
 	private List<MenuItem> subMenuItems = new ArrayList<>();
 	private Runnable refreshCallback;
+	private boolean enabled = true;
 
 	public MenuItem(String label, MenuItem... subMenuItems) {
 		this.label = label;
@@ -111,5 +112,12 @@ public void setRefreshCallback(Runnable refreshCallback) {
 		this.refreshCallback = refreshCallback;
 	}
 
+	public boolean isEnabled() {
+		return enabled;
+	}
+
+	public void setEnabled(boolean enabled) {
+		this.enabled = enabled;
+	}
 
 }

src/main/resources/META-INF/resources/frontend/styles/applayout-styles.html

@@ -33,6 +33,10 @@
 		  margin-left: 24px;
 		}
 
+		paper-icon-button {
+			--paper-icon-button-disabled-text: var(--lumo-disabled-text-color);
+		}
+		
 		paper-progress {
 		  display: block;
 		      width: 100%;