From ee7c6d708a0c9a99c6678420fcdae4503138330d Mon Sep 17 00:00:00 2001
From: Manuel Rego Casasnovas <rego@igalia.com>
Date: Wed, 6 Feb 2013 14:13:17 +0100
Subject: [PATCH] Get zoom from session in company Gantt view

Add a listener in order to update the value in the session when user changes the
zoom.

FEA: ItEr77S15FilteringEnhancements
---
 .../planner/company/CompanyPlanningModel.java | 33 +++++++++++++++++--
 1 file changed, 30 insertions(+), 3 deletions(-)

diff --git a/libreplan-webapp/src/main/java/org/libreplan/web/planner/company/CompanyPlanningModel.java b/libreplan-webapp/src/main/java/org/libreplan/web/planner/company/CompanyPlanningModel.java
index a333f7488..0f8043523 100644
--- a/libreplan-webapp/src/main/java/org/libreplan/web/planner/company/CompanyPlanningModel.java
+++ b/libreplan-webapp/src/main/java/org/libreplan/web/planner/company/CompanyPlanningModel.java
@@ -233,13 +233,13 @@ public class CompanyPlanningModel implements ICompanyPlanningModel {
         addPrintSupport(configuration);
         disableSomeFeatures(configuration);
 
-        ZoomLevel defaultZoomLevel = OrderPlanningModel
-                .calculateDefaultLevel(configuration);
-        planner.setInitialZoomLevel(defaultZoomLevel);
+        planner.setInitialZoomLevel(getZoomLevel(configuration));
 
         configuration.setSecondLevelModificators(BankHolidaysMarker.create(getDefaultCalendar()));
         planner.setConfiguration(configuration);
 
+        setupZoomLevelListener(planner);
+
         if(expandPlanningViewChart) {
             //if the chart is expanded, we load the data now
             setupChartAndItsContent(planner, chartComponent);
@@ -266,6 +266,33 @@ public class CompanyPlanningModel implements ICompanyPlanningModel {
         }
     }
 
+    private ZoomLevel getZoomLevel(
+            PlannerConfiguration<TaskElement> configuration) {
+        ZoomLevel sessionZoom = (ZoomLevel) Sessions.getCurrent().getAttribute(
+                "zoomLevel");
+        if (sessionZoom != null) {
+            return sessionZoom;
+        }
+        return OrderPlanningModel.calculateDefaultLevel(configuration);
+    }
+
+    private void setupZoomLevelListener(Planner planner) {
+        planner.getTimeTracker().addZoomListener(getSessionZoomLevelListener());
+    }
+
+    private IZoomLevelChangedListener getSessionZoomLevelListener() {
+        IZoomLevelChangedListener zoomListener = new IZoomLevelChangedListener() {
+
+            @Override
+            public void zoomLevelChanged(ZoomLevel detailLevel) {
+                Sessions.getCurrent().setAttribute("zoomLevel", detailLevel);
+            }
+        };
+
+        keepAliveZoomListeners.add(zoomListener);
+        return zoomListener;
+    }
+
     private BaseCalendar getDefaultCalendar() {
         return configurationDAO.getConfiguration().getDefaultCalendar();
     }