Merge pull request #3 from bbassie/feature/gui-v5

Feature/gui v5

expcore/gui/left_flow.lua

@@ -52,7 +52,7 @@ end)
 
 ]]
 function Gui.left_toolbar_button(sprite,tooltip,element_define,authenticator)
-    return Gui.element{
+    local button = Gui.element{
         type = 'sprite-button',
         sprite = sprite,
         tooltip = tooltip,
@@ -62,9 +62,26 @@ function Gui.left_toolbar_button(sprite,tooltip,element_define,authenticator)
         padding = -2
     }
     :add_to_top_flow(authenticator)
-    :on_click(function(player,_,_)
-        Gui.toggle_left_element(player, element_define)
+
+    -- Add on_click handler to handle click events comming from the player
+    button:on_click(function(player,_,_)
+        local top_flow = Gui.get_top_flow(player)
+        local element = top_flow[button.name]
+        local visibility_state  = Gui.toggle_left_element(player, element_define)
+
+        -- Raise custom event that tells listening elements if the element has changed visibility by a player clicking
+        -- Used in warp gui to handle the keep open logic
+        button:raise_custom_event{
+            name = Gui.events.on_visibility_changed_by_click,
+            element = element,
+            state = visibility_state
+        }
     end)
+
+    -- Add property to the left flow element with the name of the button
+    -- This is for the ability to reverse lookup the button from the left flow element
+    element_define.toolbar_button = button.name
+    return button
 end
 
 --[[-- Draw all the left elements onto the left flow, internal use only
@@ -137,6 +154,26 @@ function Gui.hide_left_flow(player)
     hide_button.visible = false
     for name,_ in pairs(Gui.left_elements) do
         left_flow[name].visible = false
+
+        -- Get the assosiated element define
+        local element_define = Gui.defines[name]
+        local top_flow = Gui.get_top_flow(player)
+
+        -- Check if the the element has a button attached
+        if element_define.toolbar_button then
+            -- Check if the topflow contains the button
+            local button = top_flow[element_define.toolbar_button]
+            if button then
+                -- Get the button define from the reverse lookup on the element
+                local button_define = Gui.defines[element_define.toolbar_button]
+                -- Raise the custom event if all of the top checks have passed
+                button_define:raise_custom_event{
+                    name = Gui.events.on_visibility_changed_by_click,
+                    element = button,
+                    state = false
+                }
+            end
+        end
     end
 end
 

expcore/gui/prototype.lua

@@ -246,6 +246,7 @@ end
 
 --[[-- Raise the handler which is attached to any event; external use should be limited to custom events
 @tparam table event the event table bassed to the handler, must include fields: name, element
+@treturn table the element define so more events can be raised
 
 @usage Raising a custom event
 element_define:raise_custom_event{
@@ -258,20 +259,20 @@ function Gui._prototype_element:raise_custom_event(event)
     -- Check the element is valid
     local element = event.element
     if not element or not element.valid then
-        return
+        return self
     end
 
     -- Get the event handler for this element
     local handler = self[event.name]
     if not handler then
-        return
+        return self
     end
 
     -- Get the player for this event
     local player_index = event.player_index or element.player_index
     local player = game.players[player_index]
     if not player or not player.valid then
-        return
+        return self
     end
     event.player = player
 
@@ -279,6 +280,7 @@ function Gui._prototype_element:raise_custom_event(event)
     if not success then
         error('There as been an error with an event handler for a gui element:\n\t'..err)
     end
+    return self
 end
 
 -- This function is used to register a link between element define events and the events in the factorio api
@@ -348,5 +350,11 @@ Gui._prototype_element.on_text_changed = event_handler_factory(defines.events.on
 -- @tparam function handler the event handler which will be called
 Gui._prototype_element.on_value_changed = event_handler_factory(defines.events.on_gui_value_changed)
 
+--- Custom element events.
+-- @section customEvents
+
+-- Triggered when a user changed the visibility of a left flow element by clicking a button
+Gui.events.on_visibility_changed_by_click = 'on_visibility_changed_by_click'
+
 -- Module return
 return Gui

modules/gui/warp-list.lua

@@ -439,9 +439,9 @@ end)
 Gui.left_toolbar_button('item/'..config.default_icon,{'warp-list.main-tooltip',config.standard_proximity_radius},warp_list_container, function(player)
     return Roles.player_allowed(player,'gui/warp-list')
 end)
-:on_click(function(player,_,_)
-    local visible_state = Gui.toggle_left_element(player, warp_list_container)
-    keep_gui_open[player.name] = visible_state
+:on_custom_event(Gui.events.on_visibility_changed_by_click, function(player,_,event)
+    -- Set gui keep open state for player that clicked the button: true if visible, false if invisible
+    keep_gui_open[player.name] = event.state
 end)
 
 --- When the name of a warp is updated this is triggered