added new action SetDisplayText

src/main/java/de/srsoftware/web4rail/actions/SetDisplayText.java

@@ -0,0 +1,78 @@
+package de.srsoftware.web4rail.actions;
+
+import java.util.HashMap;
+
+import org.json.JSONObject;
+
+import de.srsoftware.tools.Tag;
+import de.srsoftware.web4rail.Window;
+import de.srsoftware.web4rail.tags.Form;
+import de.srsoftware.web4rail.tags.Label;
+import de.srsoftware.web4rail.tags.Select;
+import de.srsoftware.web4rail.tiles.TextDisplay;
+
+public class SetDisplayText extends TextAction{
+
+	private TextDisplay display;
+	private static final String DISPLAY = "display";
+	
+	@Override
+	public boolean fire(Context context) {
+		plan.place(display.text(fill(text, context)));
+		return true;
+	}
+	
+	@Override
+	public JSONObject json() {
+		return super.json().put(DISPLAY, display.id());
+	}
+
+	@Override
+	protected Label label() {
+		return new Label(t("Text to show on display:")+NBSP);
+	}
+	
+	@Override
+	public Action load(JSONObject json) {
+		if (json.has(DISPLAY)) {
+			new Thread() { // load asynchronously, as referred tile may not be available,yet
+				public void run() {
+					try {
+						sleep(1000);
+						display = (TextDisplay) plan.get(json.getString(DISPLAY), false);
+					} catch (InterruptedException e) {}						
+				};
+			}.start();
+		}
+		return super.load(json);
+	}
+	
+	@Override
+	public Window properties(HashMap<String, String> params) {
+		Window win = super.properties(params);
+		
+		Select select = TextDisplay.selector(display, null);
+		Tag label = select.addTo(new Label(t("Select display:")+NBSP));
+		
+		for (Tag tag : win.children()) {
+			if (tag instanceof Form) {
+				tag.children().insertElementAt(label, 1);
+				break;
+			}
+		}
+		return win;
+	}
+	
+	@Override
+	public String toString() {
+		return isNull(display) ? t("[Click here to select display!]") : t("Display \"{}\" on {}.",text,display);
+	}
+	
+	@Override
+	protected Object update(HashMap<String, String> params) {
+		super.update(params);
+		String displayId = params.get(TextDisplay.class.getSimpleName());
+		if (isSet(displayId)) display = (TextDisplay) plan.get(displayId, false);
+		return properties(params);
+	}
+}