fix #1682 by closing all dict windows when holding close icon

frontend/apps/reader/modules/readerdictionary.lua

@@ -12,6 +12,7 @@ local T = require("ffi/util").template
 
 local ReaderDictionary = InputContainer:new{
     data_dir = nil,
+    dict_window_list = {},
 }
 
 function ReaderDictionary:init()
@@ -104,6 +105,7 @@ function ReaderDictionary:showDict(word, results, box)
     if results and results[1] then
         DEBUG("showing quick lookup window", word, results)
         self.dict_window = DictQuickLookup:new{
+            window_list = self.dict_window_list,
             ui = self.ui,
             highlight = self.highlight,
             dialog = self.dialog,
@@ -116,6 +118,7 @@ function ReaderDictionary:showDict(word, results, box)
             -- differentiate between dict and wiki
             wiki = self.wiki,
         }
+        table.insert(self.dict_window_list, self.dict_window)
         UIManager:show(self.dict_window)
     end
 end

frontend/ui/widget/closebutton.lua

@@ -52,10 +52,27 @@ function CloseButton:init()
         },
         doc = "Tap on close button",
     }
+
+    self.ges_events.HoldClose = {
+        GestureRange:new{
+            ges = "hold_release",
+            range = function() return self.dimen end,
+        },
+        doc = "Hold on close button",
+    }
 end
 
 function CloseButton:onClose()
-    self.window:onClose()
+    if self.window.onClose then
+        self.window:onClose()
+    end
+    return true
+end
+
+function CloseButton:onHoldClose()
+    if self.window.onHoldClose then
+        self.window:onHoldClose()
+    end
     return true
 end
 

frontend/ui/widget/dictquicklookup.lua

@@ -88,7 +88,7 @@ function DictQuickLookup:init()
                 -- callback function when HoldWord is handled as args
                 args = function(word)
                     self.ui:handleEvent(
-                        Event:new("LookupWord", word, self.word_box))
+                        Event:new("LookupWord", word, self.word_box, self.highlight))
                 end
             },
         }
@@ -384,8 +384,24 @@ end
 
 function DictQuickLookup:onClose()
     UIManager:close(self)
+    for i = #self.window_list, 1, -1 do
+        local window = self.window_list[i]
+        if window == self then
+            table.remove(self.window_list, i)
+        end
+    end
     if self.highlight then
-        self.highlight:handleEvent(Event:new("Tap"))
+        self.highlight:clear()
+    end
+    return true
+end
+
+function DictQuickLookup:onHoldClose()
+    self:onClose()
+    for i = #self.window_list, 1, -1 do
+        local window = self.window_list[i]
+        UIManager:close(window)
+        table.remove(self.window_list, i)
     end
     return true
 end