gm-editor fixes and improvements

scripts/gui/gm-editor.lua

@@ -1,5 +1,4 @@
 -- Interface powered item editor.
--- TODO use this:  MechanismList = defclass(MechanismList, guidm.MenuOverlay)
 local gui = require 'gui'
 local dialog = require 'gui.dialogs'
 
@@ -40,19 +39,24 @@ end
 
 local MODE_BROWSE=0
 local MODE_EDIT=1
-local item_screen={
+GmEditorUi = defclass(GmEditorUi, gui.FramedScreen)
+GmEditorUi.ATTRS={
     frame_style = gui.GREY_LINE_FRAME,
     frame_title = "GameMaster's editor",
-	stack={},
+	}
-	item_count=0,
+function GmEditorUi:init(args)
-	mode=MODE_BROWSE,
+    self.stack={}
-	
+    self.item_count=0
-	keys={},
+    self.mode=MODE_BROWSE
+    self.keys={}
+    self:pushTarget(args.target)
     
-	insertNew=function(self,typename)
+    return self
+end
+function GmEditorUi:insertNew(typename)
     local tp=typename
     if typename== nil then
-			dialog.showInputPrompt("Class type","Input class type\n:",COLOR_WHITE,"",dfhack.curry(self.insertNew,self))
+        dialog.showInputPrompt("Class type","Input class type:",COLOR_WHITE,"",dfhack.curry(self.insertNew,self))
         return
     end
     local ntype=df[tp]
@@ -67,22 +71,22 @@ local item_screen={
         dfhack.call_with_finalizer(1,false,df.delete,thing,trg.target.insert,trg.target,'#',thing)
         
     end
-	end,
+end
-	deleteSelected=function(self)
+function GmEditorUi:deleteSelected()
     local trg=self:currentTarget()
     if trg.target and trg.target._kind and trg.target._kind=="container" then
         trg.target:erase(trg.keys[trg.selected])
     end
-	end,
+end
-	currentTarget=function(self)
+function GmEditorUi:currentTarget()
     return self.stack[#self.stack]
-	end,
+end
-	changeSelected = function (self,delta)
+function GmEditorUi:changeSelected(delta)
     local trg=self:currentTarget()
     if trg.item_count <= 1 then return end
     trg.selected = 1 + (trg.selected + delta - 1) % trg.item_count
-	end,
+end
-	editSelected = function(self)
+function GmEditorUi:editSelected()
     local trg=self:currentTarget()
     if trg.target and trg.target._kind and trg.target._kind=="bitfield" then
         trg.target[trg.keys[trg.selected]]= not trg.target[trg.keys[trg.selected]]
@@ -96,19 +100,19 @@ local item_screen={
             trg.target[trg.keys[trg.selected]]= not trg.target[trg.keys[trg.selected]]
         elseif trg_type=='userdata' then
             self:pushTarget(trg.target[trg.keys[trg.selected]])
-				--local screen = mkinstance(gui.FramedScreen,item_screen):init(trg.target[trg.keys[trg.selected]]) -- does not work
+            --local screen = mkinstance(gui.FramedScreen,GmEditorUi):init(trg.target[trg.keys[trg.selected]]) -- does not work
             --screen:show()
         else
             print("Unknow type:"..trg_type)
             print("Subtype:"..tostring(trg.target[trg.keys[trg.selected]]._kind))
         end
     end
-	end,
+end
-	cancelEdit = function(self)
+function GmEditorUi:cancelEdit()
     self.mode=MODE_BROWSE
     self.input=""
-	end,
+end
-	commitEdit = function(self)
+function GmEditorUi:commitEdit()
     local trg=self:currentTarget()
     self.mode=MODE_BROWSE
     if type(trg.target[trg.keys[trg.selected]])=='number' then
@@ -116,16 +120,19 @@ local item_screen={
     elseif type(trg.target[trg.keys[trg.selected]])=='string' then
         trg.target[trg.keys[trg.selected]]=self.input
     end
-	end,
+end
-    onRenderBody = function(self, dc)
+function GmEditorUi:onRenderBody( dc)
     local trg=self:currentTarget()
     dc:seek(2,1):string(tostring(trg.target), COLOR_RED)
     local offset=2
     local page_offset=0
     local current_item=1
     local t_col
-		if math.floor(trg.selected / (self.frame_height-offset-2)) >0 then
+    local width,height=self:getWindowSize()
-			page_offset=math.floor(trg.selected / (self.frame_height-offset-2))*(self.frame_height-offset-2)-1
+    local window_height=height-offset-2
+    local cursor_window=math.floor(trg.selected / window_height)
+    if  cursor_window>0 then
+        page_offset=cursor_window*window_height-1
     end
     for k,v in pairs(trg.target) do
         
@@ -144,12 +151,15 @@ local item_screen={
             else
                 dc:seek(20,y_pos):string(tostring(v),t_col)
             end
+            if y_pos+3>height then
+                break
             end
-			current_item=current_item+1
         end
-    end,
+        current_item=current_item+1
         
-    onInput = function(self,keys)
+    end
+end
+ function GmEditorUi:onInput(keys)
     if self.mode==MODE_BROWSE then
         if keys.LEAVESCREEN  then
             self:popTarget()
@@ -185,8 +195,8 @@ local item_screen={
             end
         end
     end
-    end,
+end
-	pushTarget=function(self,target_to_push)
+function GmEditorUi:pushTarget(target_to_push)
     local new_tbl={}
     new_tbl.target=target_to_push
     new_tbl.keys={}
@@ -196,21 +206,14 @@ local item_screen={
     end
     new_tbl.item_count=#new_tbl.keys
     table.insert(self.stack,new_tbl)
-	end,
+end
-	popTarget=function(self)
+function GmEditorUi:popTarget()
     table.remove(self.stack) --removes last element
     if #self.stack==0 then
         self:dismiss()
     end
-	end,
+end
-	init = function(self,item_to_edit)
-		self:pushTarget(item_to_edit)
-		self.frame_width,self.frame_height=dfhack.screen.getWindowSize()
-		return self
-	end
-	}
-
 
+local screen = GmEditorUi{target=my_trg}
 
-local screen = mkinstance(gui.FramedScreen,item_screen):init(my_trg)
 screen:show()