From 556b771078f1f7dfe67e963f6bc30f1b9465271a Mon Sep 17 00:00:00 2001
From: Dominic Zimmer <s8dozimm@stud.uni-saarland.de>
Date: Thu, 8 Aug 2019 16:06:33 +0200
Subject: [PATCH] Add inital work on cursor movement, bugs everywhere!

---
 drawtool.py | 43 ++++++++++++++++++++++++++++++++++++++--
 mainview.py | 56 +++++++++++++++++++++++++++++++++--------------------
 2 files changed, 76 insertions(+), 23 deletions(-)

diff --git a/drawtool.py b/drawtool.py
index 62874a3..607824a 100644
--- a/drawtool.py
+++ b/drawtool.py
@@ -60,12 +60,51 @@ class Drawtool():
         return newlines
         #return textwrap.wrap(s, width = width)
 
+    def move_cursor_home(self):
+        y, x = self._get_cursor_position(self.main_view.inputs, width = self.W - 4)
+        lines = self._get_input_lines(self.main_view.inputs, width = self.W - 4)[-self.input_lines:]
+        self.main_view.cursor -= x
+        #len(lines[y])
+    
+    def move_cursor_end(self):
+        try:
+            y, x = self._get_cursor_position(self.main_view.inputs, width = self.W - 4)
+            lines = self._get_input_lines(self.main_view.inputs, width = self.W - 4)[-self.input_lines:]
+            self.main_view.cursor -= x - len(lines[y])
+        except:
+            show_stacktrace()
+        #len(lines[y])
+
+    def move_cursor_up(self):
+        y, x = self._get_cursor_position(self.main_view.inputs, width = self.W - 4)
+        lines = self._get_input_lines(self.main_view.inputs, width = self.W - 4)[-self.input_lines:]
+        debug(lines)
+        debug(f"x:{x} y:{y}")
+        if y > 0:
+            self.main_view.cursor -= x
+            self.main_view.cursor -= 1
+
+    def move_cursor_down(self):
+        pass
+
     def _get_cursor_position(self, s, width = 50):
         lines = self._get_input_lines(s, width = width)[-self.input_lines:]
+        alllines = self._get_input_lines(s, width = width)
         if not lines:
             return (0, 0)
-        x = len(lines[-1])
-        y = len(lines) - 1
+        curs = self.main_view.cursor
+        y = 0
+        x = 0
+        for line in alllines:
+            if curs > len(line):
+                curs -= len(line)
+                y += 1
+            else:
+                x = curs
+                break
+            curs -= 1
+        if y >= self.input_lines:
+            y = self.input_lines - 1
         return y, x
 
     async def redraw(self):
diff --git a/mainview.py b/mainview.py
index b08bafa..01a026a 100644
--- a/mainview.py
+++ b/mainview.py
@@ -28,7 +28,7 @@ class MainView():
         self.text_emojis = True
 
         self.inputs = ""
-        self.inputs_cursor = 0
+        self.cursor = 0
 
         self.popup = None
 
@@ -442,33 +442,47 @@ class MainView():
                 self.mode = "normal"
             elif key == "LEFT":
                 self.insert_move_left()
+            elif key == "UP":
+                self.drawtool.move_cursor_up()
             elif key == "RIGHT":
                 self.insert_move_right()
+            elif key == "HOME":
+                self.drawtool.move_cursor_home()
+                #self.cursor = 0
+            elif key == "END":
+                self.drawtool.move_cursor_end()
+                #self.cursor = len(self.inputs)
+            elif key == "DEL":
+                try:
+                    if len(self.inputs) > self.cursor:
+                        inp = list(self.inputs)
+                        inp.pop(self.cursor)
+                        self.inputs = "".join(inp)
+                except:
+                    debug(f"{self.cursor}, {self.inputs}")
+                    show_stacktrace()
             elif key == "BACKSPACE":
-                self.inputs = self.inputs[0:-1]
-            elif key == "RETURN":
-                self.inputs += "\n"
+                try:
+                    if len(self.inputs) > 0:
+                        inp = list(self.inputs)
+                        inp.pop(self.cursor - 1)
+                        self.inputs = "".join(inp)
+                        self.insert_move_left()
+                except:
+                    debug(f"{self.cursor}, {self.inputs}")
+                    show_stacktrace()
             else:
-                self.inputs += key
+                if key == "RETURN":
+                    key = "\n"
+                inp = list(self.inputs)
+                inp.insert(self.cursor, key)
+                self.inputs = "".join(inp)
+                self.cursor += 1
         self.command_box = ""
         await self.drawtool.redraw()
 
     def insert_move_left(self):
-        self.inputs_cursor = max(0, self.cursor - 1)
+        self.cursor = max(0, self.cursor - 1)
 
     def insert_move_right(self):
-        self.inputs_cursor = min(len(self.inputs), self.cursor + 1)
-
-    async def handle_key_old(self, key):
-        if key == "RETURN":
-            with await self.inputevent:
-                self.inputevent.notify()
-        elif key == "":
-            chat =  self.dialogs[self.selected_chat]["dialog"]
-            last_message = self.dialogs[self.selected_chat]["messages"][0]
-            await self.client.send_read_acknowledge(chat, max_id=last_message.id)
-            self.dialogs[self.selected_chat]["unread_count"] = 0
-        else:
-            self.inputs += key
-        self.drawtool.redraw()
-
+        self.cursor = min(len(self.inputs), self.cursor + 1)