Fixed Combobox popup positioning problem when located inside a PopupView #9768

Change-Id: I5c256483fcb5050b08eb7c481676385789e96f09

client/src/com/vaadin/client/ui/combobox/VFilterSelect.java

@@ -24,6 +24,7 @@ import java.util.Iterator;
 import java.util.List;
 import java.util.Set;
 
+import com.google.gwt.core.client.Scheduler;
 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
 import com.google.gwt.dom.client.Style;
 import com.google.gwt.dom.client.Style.Display;
@@ -234,49 +235,68 @@ public class VFilterSelect extends Composite implements Field, KeyDownHandler,
          *            The total amount of suggestions
          */
         public void showSuggestions(
-                Collection<FilterSelectSuggestion> currentSuggestions,
-                int currentPage, int totalSuggestions) {
-
-            // Add TT anchor point
-            getElement().setId("VAADIN_COMBOBOX_OPTIONLIST");
-
-            menu.setSuggestions(currentSuggestions);
-            final int x = VFilterSelect.this.getAbsoluteLeft();
-            topPosition = tb.getAbsoluteTop();
-            topPosition += tb.getOffsetHeight();
-            setPopupPosition(x, topPosition);
-
-            int nullOffset = (nullSelectionAllowed && "".equals(lastFilter) ? 1
-                    : 0);
-            boolean firstPage = (currentPage == 0);
-            final int first = currentPage * pageLength + 1
-                    - (firstPage ? 0 : nullOffset);
-            final int last = first + currentSuggestions.size() - 1
-                    - (firstPage && "".equals(lastFilter) ? nullOffset : 0);
-            final int matches = totalSuggestions - nullOffset;
-            if (last > 0) {
-                // nullsel not counted, as requested by user
-                status.setInnerText((matches == 0 ? 0 : first) + "-" + last
-                        + "/" + matches);
-            } else {
-                status.setInnerText("");
-            }
-            // We don't need to show arrows or statusbar if there is only one
-            // page
-            if (totalSuggestions <= pageLength || pageLength == 0) {
-                setPagingEnabled(false);
-            } else {
-                setPagingEnabled(true);
-            }
-            setPrevButtonActive(first > 1);
-            setNextButtonActive(last < matches);
+                final Collection<FilterSelectSuggestion> currentSuggestions,
+                final int currentPage, final int totalSuggestions) {
 
-            // clear previously fixed width
-            menu.setWidth("");
-            menu.getElement().getFirstChildElement().getStyle().clearWidth();
+            /*
+             * We need to defer the opening of the popup so that the parent DOM
+             * has stabilized so we can calculate an absolute top and left
+             * correctly. This issue manifests when a Combobox is placed in
+             * another popupView which also needs to calculate the absoluteTop()
+             * to position itself. #9768
+             */
+            final SuggestionPopup popup = this;
+            Scheduler.get().scheduleDeferred(new ScheduledCommand() {
+                @Override
+                public void execute() {
+                    // Add TT anchor point
+                    getElement().setId("VAADIN_COMBOBOX_OPTIONLIST");
+
+                    menu.setSuggestions(currentSuggestions);
+                    final int x = VFilterSelect.this.getAbsoluteLeft();
+
+                    topPosition = tb.getAbsoluteTop();
+                    topPosition += tb.getOffsetHeight();
+
+                    setPopupPosition(x, topPosition);
+
+                    int nullOffset = (nullSelectionAllowed
+                            && "".equals(lastFilter) ? 1 : 0);
+                    boolean firstPage = (currentPage == 0);
+                    final int first = currentPage * pageLength + 1
+                            - (firstPage ? 0 : nullOffset);
+                    final int last = first
+                            + currentSuggestions.size()
+                            - 1
+                            - (firstPage && "".equals(lastFilter) ? nullOffset
+                                    : 0);
+                    final int matches = totalSuggestions - nullOffset;
+                    if (last > 0) {
+                        // nullsel not counted, as requested by user
+                        status.setInnerText((matches == 0 ? 0 : first) + "-"
+                                + last + "/" + matches);
+                    } else {
+                        status.setInnerText("");
+                    }
+                    // We don't need to show arrows or statusbar if there is
+                    // only one
+                    // page
+                    if (totalSuggestions <= pageLength || pageLength == 0) {
+                        setPagingEnabled(false);
+                    } else {
+                        setPagingEnabled(true);
+                    }
+                    setPrevButtonActive(first > 1);
+                    setNextButtonActive(last < matches);
 
-            setPopupPositionAndShow(this);
+                    // clear previously fixed width
+                    menu.setWidth("");
+                    menu.getElement().getFirstChildElement().getStyle()
+                            .clearWidth();
 
+                    setPopupPositionAndShow(popup);
+                }
+            });
         }
 
         /**

uitest/src/com/vaadin/tests/components/combobox/ComboboxInPopupViewWithItems.html

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head profile="http://selenium-ide.openqa.org/profiles/test-case">
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+<link rel="selenium.base" href="http://localhost:8888/" />
+<title>New Test</title>
+</head>
+<body>
+<table cellpadding="1" cellspacing="1" border="1">
+<thead>
+<tr><td rowspan="1" colspan="3">New Test</td></tr>
+</thead><tbody>
+<tr>
+    <td>open</td>
+    <td>/run/com.vaadin.tests.components.combobox.ComboboxInPopupViewWithItems?restartApplication</td>
+    <td></td>
+</tr>
+<tr>
+    <td>mouseClick</td>
+    <td>vaadin=runcomvaadintestscomponentscomboboxComboboxInPopupViewWithItems::/VVerticalLayout[0]/VOrderedLayout$Slot[1]/VVerticalLayout[0]/VOrderedLayout$Slot[1]/VPopupView[0]</td>
+    <td>26,6</td>
+</tr>
+<tr>
+    <td>mouseClick</td>
+    <td>//input[@type='text']</td>
+    <td>52,13</td>
+</tr>
+<tr>
+    <td>pressSpecialKey</td>
+    <td>//input[@type='text']</td>
+    <td>down</td>
+</tr>
+<tr>
+    <td>screenCapture</td>
+    <td></td>
+    <td>popup-open</td>
+</tr>
+
+</tbody></table>
+</body>
+</html>

uitest/src/com/vaadin/tests/components/combobox/ComboboxInPopupViewWithItems.java

@@ -0,0 +1,45 @@
+package com.vaadin.tests.components.combobox;
+
+import java.util.Arrays;
+
+import com.vaadin.tests.components.TestBase;
+import com.vaadin.ui.ComboBox;
+import com.vaadin.ui.Component;
+import com.vaadin.ui.PopupView;
+import com.vaadin.ui.TextArea;
+
+public class ComboboxInPopupViewWithItems extends TestBase {
+
+    @Override
+    protected void setup() {
+        addComponent(new TextArea("Some component"));
+        addComponent(new PopupView(new PopupContent()));
+
+    }
+
+    @Override
+    protected String getDescription() {
+        return "Combobox popup should be in the correct place even when it is located inside a PopupView";
+    }
+
+    @Override
+    protected Integer getTicketNumber() {
+        return 9768;
+    }
+
+    class PopupContent implements PopupView.Content {
+
+        private final ComboBox cb = new ComboBox(null, Arrays.asList("Item 1",
+                "Item 2", "Item 3"));
+
+        @Override
+        public String getMinimizedValueAsHTML() {
+            return "click here";
+        }
+
+        @Override
+        public Component getPopupComponent() {
+            return cb;
+        }
+    }
+}