enable highlight in dictionary lookup window

This should fix #774.

frontend/apps/reader/modules/readerhighlight.lua

@@ -281,7 +281,7 @@ function ReaderHighlight:translate(selected_text)
     end
 end
 
-function ReaderHighlight:onHoldRelease(arg, ges)
+function ReaderHighlight:onHoldRelease()
     if self.selected_word then
         self:lookup(self.selected_word)
         self.selected_word = nil
@@ -347,6 +347,16 @@ function ReaderHighlight:onHoldRelease(arg, ges)
     return true
 end
 
+function ReaderHighlight:onHighlight()
+    if self.hold_pos then
+        if not self.selected_text then
+            self.selected_text = self.ui.document:getTextFromPositions(self.hold_pos, self.hold_pos)
+            DEBUG("selected text:", self.selected_text)
+        end
+        self:saveHighlight()
+    end
+end
+
 function ReaderHighlight:saveHighlight()
     DEBUG("save highlight")
     local page = self.hold_pos.page

frontend/ui/widget/dictquicklookup.lua

@@ -132,6 +132,12 @@ function DictQuickLookup:update()
                         self:changeToPrevDict()
                     end,
                 },
+                {
+                    text = _("Highlight"),
+                    callback = function()
+                        self.ui:handleEvent(Event:new("Highlight"))
+                    end,
+                },
                 {
                     text = ">>",
                     enabled = self:isNextDictAvaiable(),
@@ -142,17 +148,24 @@ function DictQuickLookup:update()
             },
             {
                 {
-                    text = _("Highlight"),
+                    text = _("Wikipedia"),
                     enabled = false,
                     callback = function()
-                        self.ui:handleEvent(Event:new("Highlight"))
+                        self.ui:handleEvent(Event:new("HighlightWiki"))
                     end,
                 },
                 {
                     text = _("Add Note"),
                     enabled = false,
                     callback = function()
-                        self.ui:handleEvent(Event:new("AddNote"))
+                        self.ui:handleEvent(Event:new("HighlightAddNote"))
+                    end,
+                },
+                {
+                    text = _("More"),
+                    enabled = false,
+                    callback = function()
+                        self.ui:handleEvent(Event:new("HighlightMore"))
                     end,
                 },
             },