Bug 732169 - Associate prompts with tabs. r=lucasr

mobile/android/base/Tabs.java

@@ -63,6 +63,8 @@ public class Tabs implements GeckoEventListener {
 
     private static final long PERSIST_TABS_AFTER_MILLISECONDS = 1000 * 5;
 
+    public static final int INVALID_TAB_ID = -1;
+
     private static AtomicInteger sTabId = new AtomicInteger(0);
     private volatile boolean mInitialTabsAdded;
 

mobile/android/base/prompts/Prompt.java

@@ -12,6 +12,8 @@ import org.mozilla.gecko.GeckoAppShell;
 import org.mozilla.gecko.GeckoEvent;
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.util.ThreadUtils;
+import org.mozilla.gecko.Tab;
+import org.mozilla.gecko.Tabs;
 
 import android.app.AlertDialog;
 import android.content.Context;
@@ -39,7 +41,7 @@ import android.widget.TextView;
 import java.util.ArrayList;
 
 public class Prompt implements OnClickListener, OnCancelListener, OnItemClickListener,
-                               PromptInput.OnChangeListener {
+                               PromptInput.OnChangeListener, Tabs.OnTabsChangedListener {
     private static final String LOGTAG = "GeckoPromptService";
 
     private String[] mButtons;
@@ -55,6 +57,8 @@ public class Prompt implements OnClickListener, OnCancelListener, OnItemClickLis
     private static boolean mInitialized;
     private static int mInputPaddingSize;
 
+    private int mTabId = Tabs.INVALID_TAB_ID;
+
     public Prompt(Context context, PromptCallback callback) {
         this(context);
         mCallback = callback;
@@ -105,6 +109,10 @@ public class Prompt implements OnClickListener, OnCancelListener, OnItemClickLis
             choiceMode = ListView.CHOICE_MODE_MULTIPLE;
         }
 
+        if (message.has("tabId")) {
+            mTabId = message.optInt("tabId", Tabs.INVALID_TAB_ID);
+        }
+
         show(title, text, menuitems, choiceMode);
     }
 
@@ -118,8 +126,39 @@ public class Prompt implements OnClickListener, OnCancelListener, OnItemClickLis
             return;
         }
 
+        if (mTabId != Tabs.INVALID_TAB_ID) {
+            Tabs.registerOnTabsChangedListener(this);
+
+            final Tab tab = Tabs.getInstance().getTab(mTabId);
+            if (Tabs.getInstance().getSelectedTab() == tab) {
                 mDialog.show();
             }
+        } else {
+            mDialog.show();
+        }
+    }
+
+    @Override
+    public void onTabChanged(final Tab tab, final Tabs.TabEvents msg, final Object data) {
+        if (tab != Tabs.getInstance().getTab(mTabId)) {
+            return;
+        }
+
+        switch(msg) {
+            case SELECTED:
+                Log.i(LOGTAG, "Selected");
+                mDialog.show();
+                break;
+            case UNSELECTED:
+                Log.i(LOGTAG, "Unselected");
+                mDialog.hide();
+                break;
+            case LOCATION_CHANGE:
+                Log.i(LOGTAG, "Location change");
+                mDialog.cancel();
+                break;
+        }
+    }
 
     private void create(String title, String text, PromptListItem[] listItems, int choiceMode)
             throws IllegalStateException {
@@ -140,8 +179,7 @@ public class Prompt implements OnClickListener, OnCancelListener, OnItemClickLis
         if (listItems != null && listItems.length > 0) {
             addListItems(builder, listItems, choiceMode);
         } else if (!addInputs(builder)) {
-            // If we failed to add any requested input elements, don't show the dialog
-            return;
+            throw new IllegalStateException("Could not add inputs to dialog");
         }
 
         int length = mButtons == null ? 0 : mButtons.length;
@@ -452,6 +490,10 @@ public class Prompt implements OnClickListener, OnCancelListener, OnItemClickLis
             aReturn.put("guid", mGuid);
         } catch(JSONException ex) { }
 
+        if (mTabId != Tabs.INVALID_TAB_ID) {
+            Tabs.unregisterOnTabsChangedListener(this);
+        }
+
         // poke the Gecko thread in case it's waiting for new events
         GeckoAppShell.sendEventToGecko(GeckoEvent.createNoOpEvent());
 

mobile/android/modules/Prompt.jsm

@@ -18,8 +18,17 @@ function log(msg) {
 
 function Prompt(aOptions) {
   this.window = "window" in aOptions ? aOptions.window : null;
+
   this.msg = { async: true };
 
+  if (this.window) {
+    let window = Services.wm.getMostRecentWindow("navigator:browser");
+    var tab = window.BrowserApp.getTabForWindow(this.window);
+    if (tab) {
+      this.msg.tabId = tab.id;
+    }
+  }
+
   if (aOptions.priority === 1)
     this.msg.type = "Prompt:ShowTop"
   else
@@ -36,8 +45,6 @@ function Prompt(aOptions) {
 
   if ("hint" in aOptions && aOptions.hint != null)
     this.msg.hint = aOptions.hint;
-
-  let idService = Cc["@mozilla.org/uuid-generator;1"].getService(Ci.nsIUUIDGenerator);
 }
 
 Prompt.prototype = {