Populate popup with frame's URL.

Previously, we have been populating the suggested exclusion URL in the
page popup with the tab's URL.  This uses the active frame's URL
instead:

- because this is the URL which will affect the current frame (without
  this, a user can naively add an exclusion rule and it has no effect),
  and

- because, without this, the user has no reasonable way to add exclusion
  rules for frames such as the hangouts frame on gmail (for which, the
  URL is not displayed in the address bar).

3 files changed, 12 insertions, 4 deletions

diff --git a/background_scripts/main.coffee b/background_scripts/main.coffee
index b390fe1c..ecf18bef 100644
--- a/background_scripts/main.coffee
+++ b/background_scripts/main.coffee
@@ -26,6 +26,7 @@ validFirstKeys = {}
 singleKeyCommands = []
 focusedFrame = null
 frameIdsForTab = {}
+root.urlForTab = {}
 
 # Keys are either literal characters, or "named" - for example <a-b> (alt+b), <left> (left arrow) or <f12>
 # This regular expression captures two groups: the first is a named key, the second is the remainder of
@@ -462,6 +463,7 @@ chrome.tabs.onRemoved.addListener (tabId) ->
   tabInfoMap.deletor = -> delete tabInfoMap[tabId]
   setTimeout tabInfoMap.deletor, 1000
   delete frameIdsForTab[tabId]
+  delete urlForTab[tabId]
 
 chrome.tabs.onActiveChanged.addListener (tabId, selectInfo) -> updateActiveState(tabId)
 
@@ -647,6 +649,7 @@ unregisterFrame = (request, sender) ->
 
 handleFrameFocused = (request, sender) ->
   tabId = sender.tab.id
+  urlForTab[tabId] = request.url
   if frameIdsForTab[tabId]?
     frameIdsForTab[tabId] =
       [request.frameId, (frameIdsForTab[tabId].filter (id) -> id != request.frameId)...]
diff --git a/content_scripts/vimium_frontend.coffee b/content_scripts/vimium_frontend.coffee
index 429657fc..757cc0ad 100644
--- a/content_scripts/vimium_frontend.coffee
+++ b/content_scripts/vimium_frontend.coffee
@@ -190,6 +190,7 @@ initializePreDomReady = ->
     # Ensure the sendResponse callback is freed.
     false
 
+
 # Wrapper to install event listeners.  Syntactic sugar.
 installListener = (element, event, callback) ->
   element.addEventListener(event, ->
@@ -227,12 +228,12 @@ getActiveState = ->
   return { enabled: isEnabledForUrl, passKeys: passKeys }
 
 #
-# The backend needs to know which frame has focus.
+# The backend needs to know which frame has focus, and the active URL.
 #
 registerFocus = ->
   # settings may have changed since the frame last had focus
   settings.load()
-  chrome.runtime.sendMessage({ handler: "frameFocused", frameId: frameId })
+  chrome.runtime.sendMessage handler: "frameFocused", frameId: frameId, url: window.location.toString()
 
 #
 # Initialization tasks that must wait for the document to be ready.
diff --git a/pages/options.coffee b/pages/options.coffee
index d2950348..61b055c2 100644
--- a/pages/options.coffee
+++ b/pages/options.coffee
@@ -271,8 +271,12 @@ initPopupPage = ->
     exclusions = null
     document.getElementById("optionsLink").setAttribute "href", chrome.runtime.getURL("pages/options.html")
 
+    # As the active URL, we choose the most recently registered URL from a frame in the tab, or the tab's own
+    # URL.
+    url = chrome.extension.getBackgroundPage().urlForTab[tab.id] || tab.url
+
     updateState = ->
-      rule = bgExclusions.getRule tab.url, exclusions.readValueFromElement()
+      rule = bgExclusions.getRule url, exclusions.readValueFromElement()
       $("state").innerHTML = "Vimium will " +
         if rule and rule.passKeys
           "exclude <span class='code'>#{rule.passKeys}</span>"
@@ -302,7 +306,7 @@ initPopupPage = ->
         window.close()
 
     # Populate options. Just one, here.
-    exclusions = new ExclusionRulesOnPopupOption(tab.url, "exclusionRules", onUpdated)
+    exclusions = new ExclusionRulesOnPopupOption(url, "exclusionRules", onUpdated)
 
     updateState()
     document.addEventListener "keyup", updateState