Story burndown for project dashboard

.gitignore

@@ -7,4 +7,5 @@ temp-testng*
 tomcat
 *.log
 velocity.log*
-
+.idea/
+classes/

src/main/java/scrum/client/dashboard/DashboardWidget.java

@@ -32,6 +32,11 @@ protected Widget onInitialization() {
 
 		ScrumNavigatorWidget nav = widgets.getSidebar().getNavigator();
 
+		PagePanel storyBurndown = new PagePanel();
+		storyBurndown.addHeader("Story Burndown",
+			new HyperlinkWidget(nav.createSwitchAction(widgets.getSprintBacklog())));
+		storyBurndown.addSection(new StoryBurndownWidget());
+
 		PagePanel sprintBurndown = new PagePanel();
 		sprintBurndown.addHeader("Sprint Burndown",
 			new HyperlinkWidget(nav.createSwitchAction(widgets.getSprintBacklog())));
@@ -67,7 +72,7 @@ protected Widget onInitialization() {
 		events.addSection(new LatestEventsWidget());
 
 		Widget left = TableBuilder.column(5, sprintBurndown, teamsTasks, posTasks);
-		Widget right = TableBuilder.column(5, impediments, risks, events);
+		Widget right = TableBuilder.column(5, storyBurndown, impediments, risks, events);
 
 		return TableBuilder.row(5, left, right);
 	}

src/main/java/scrum/client/dashboard/StoryBurndownWidget.java

@@ -0,0 +1,41 @@
+package scrum.client.dashboard;
+
+import ilarkesto.core.time.Tm;
+import scrum.client.common.AScrumWidget;
+
+import com.google.gwt.user.client.Window;
+import com.google.gwt.user.client.ui.Image;
+import com.google.gwt.user.client.ui.Widget;
+
+public class StoryBurndownWidget extends AScrumWidget {
+
+	public static final int CHART_WIDTH = 800;
+	public static final int CHART_HEIGHT = 270;
+
+	private Image sprintChart;
+
+	@Override
+	protected Widget onInitialization() {
+		sprintChart = new Image(getChartUrl(200));
+		return sprintChart;
+	}
+
+	@Override
+	protected void onUpdate() {
+		int width = getChartWidth();
+		sprintChart.setWidth(width + "px");
+		sprintChart.setUrl(getChartUrl(width) + "&timestamp=" + Tm.getCurrentTimeMillis());
+	}
+
+	private String getChartUrl(int width) {
+		return getCurrentSprint().getStoryBurndown(width, CHART_HEIGHT);
+	}
+
+	private int getChartWidth() {
+		int width = Window.getClientWidth() - 280;
+		width = width / 2;
+		if (width < 100) width = 100;
+		return width;
+	}
+
+}

src/main/java/scrum/client/sprint/Sprint.java

@@ -124,6 +124,11 @@ public String getChartUrl(int width, int height) {
 				+ height;
 	}
 
+	public String getStoryBurndown(int width, int height) {
+		return GWT.getModuleBaseURL() + "storyBurndownChart.png?sprintId=" + getId() + "&width=" + width + "&height="
+				+ height;
+	}
+
 	public boolean isCompleted() {
 		return getVelocity() != null;
 	}

src/main/java/scrum/server/ScrumWebApplication.java

@@ -52,7 +52,8 @@
 import scrum.server.admin.SystemConfig;
 import scrum.server.admin.User;
 import scrum.server.admin.UserDao;
-import scrum.server.common.BurndownChart;
+import scrum.server.common.TaskBurndownChart;
+import scrum.server.common.StoryBurndownChart;
 import scrum.server.journal.ProjectEvent;
 import scrum.server.pr.EmailSender;
 import scrum.server.pr.SubscriptionService;
@@ -66,7 +67,8 @@ public class ScrumWebApplication extends GScrumWebApplication {
 
 	private static final Log log = Log.get(ScrumWebApplication.class);
 
-	private BurndownChart burndownChart;
+	private TaskBurndownChart burndownChart;
+	private StoryBurndownChart storyBurndownChart;
 	private KunagiRootConfig config;
 	private ScrumEntityfilePreparator entityfilePreparator;
 	private SystemMessage systemMessage;
@@ -86,14 +88,22 @@ protected int getDataVersion() {
 
 	// --- composites ---
 
-	public BurndownChart getBurndownChart() {
+	public TaskBurndownChart getBurndownChart() {
 		if (burndownChart == null) {
-			burndownChart = new BurndownChart();
+			burndownChart = new TaskBurndownChart();
 			burndownChart.setSprintDao(getSprintDao());
 		}
 		return burndownChart;
 	}
 
+	public StoryBurndownChart getStoryBurndownChart() {
+		if (storyBurndownChart == null) {
+			storyBurndownChart = new StoryBurndownChart();
+			storyBurndownChart.setSprintDao(getSprintDao());
+		}
+		return storyBurndownChart;
+	}
+
 	public SystemConfig getSystemConfig() {
 		return getSystemConfigDao().getSystemConfig();
 	}