From a2dcbcdd5f233cea4287812f7e897e927b7bfde3 Mon Sep 17 00:00:00 2001
From: Christian Heller <c.heller@plomlompom.de>
Date: Sat, 31 Oct 2020 10:29:57 +0100
Subject: [PATCH] Use hidden textarea for text input.

---
 new2/rogue_chat_nocanvas_monochrome.html | 79 ++++++++++++------------
 1 file changed, 40 insertions(+), 39 deletions(-)

diff --git a/new2/rogue_chat_nocanvas_monochrome.html b/new2/rogue_chat_nocanvas_monochrome.html
index 0ec2394..89e4025 100644
--- a/new2/rogue_chat_nocanvas_monochrome.html
+++ b/new2/rogue_chat_nocanvas_monochrome.html
@@ -12,6 +12,7 @@ rows: <input id="n_rows" type="number" step=2 min=10 value=24 />
 cols: <input id="n_cols" type="number" step=4 min=20 value=80 />
 </div>
 <pre id="terminal" style="display: inline-block;"></pre>
+<textarea id="input" style="opacity: 1; width: 10px;"></textarea>
 <script>
 "use strict";
 let websocket_location = "ws://localhost:8000";
@@ -189,7 +190,6 @@ let tui = {
   mode: mode_waiting_for_server,
   log: [],
   input_prompt: '> ',
-  input: '',
   input_lines: [],
   window_width: terminal.cols / 2,
   height_turn_line: 1,
@@ -201,6 +201,8 @@ let tui = {
   key_right: 'd',
   movement_keys_desc: 'w, a, s, d',
   init: function() {
+      this.inputEl = document.getElementById("input");
+      this.inputEl.focus();
       this.recalc_input_lines();
       this.height_header = this.height_turn_line + this.height_mode_line;
       this.log_msg("@ waiting for server connection ...");
@@ -218,40 +220,24 @@ let tui = {
     if (mode == mode_annotate && explorer.position in explorer.info_db) {
         let info = explorer.info_db[explorer.position];
         if (info != "(none)") {
-            this.add_to_input(explorer.info_db[explorer.position]);
+	    this.inputEl.value = explorer.info_db[explorer.position];
+	    this.recalc_input_lines();
         }
     }
     this.full_refresh();
   },
   empty_input: function(str) {
-      this.input = "";
+      this.inputEl.value = "";
       if (this.mode.has_input_prompt) {
           this.recalc_input_lines();
       } else {
           this.height_input = 0;
       }
   },
-  add_to_input: function(str) {
-      if (this.input_prompt.length + this.input.length + str.length > this.window_width * terminal.rows) {
-          return;
-      }
-      this.input += str;
-      this.recalc_input_lines();
-      this.full_refresh();
-  },
   recalc_input_lines: function() {
-      this.input_lines = this.msg_into_lines_of_width(this.input_prompt + this.input, this.window_width);
+      this.input_lines = this.msg_into_lines_of_width(this.input_prompt + this.inputEl.value, this.window_width);
       this.height_input = this.input_lines.length;
   },
-  shorten_input: function() {
-      if (this.input.length == 0) {
-          terminal.blink_screen();
-      } else {
-          this.input = tui.input.slice(0, -1);
-          this.recalc_input_lines();
-          this.full_refresh();
-      }
-  },
   msg_into_lines_of_width: function(msg, width) {
     let chunk = "";
     let lines = [];
@@ -490,19 +476,31 @@ let explorer = {
     }
 }
 
-document.addEventListener('keydown', (event) => {
-    if (tui.mode.has_input_prompt && event.key.length === 1) {
-        tui.add_to_input(event.key);
-    } else if (tui.mode.has_input_prompt && event.key == 'Backspace') {
-        tui.shorten_input();
-    } else if (tui.mode == mode_login && event.key == 'Enter') {
-        server.send(['LOGIN', tui.input]);
+tui.inputEl.addEventListener('input', (event) => {
+    if (tui.mode.has_input_prompt) {
+	let max_length = tui.window_width * terminal.rows - tui.input_prompt.length;
+        if (tui.inputEl.value.length > max_length) {
+            tui.inputEl.value = tui.inputEl.value.slice(0, max_length);
+        };
+        tui.recalc_input_lines();
+        tui.full_refresh();
+    } else if (tui.mode == mode_edit && tui.inputEl.value.length > 0) {
+        server.send(["TASK:WRITE", tui.inputEl.value[0]]);
+        tui.switch_mode(mode_play);
+    }
+}, false);
+tui.inputEl.addEventListener('keydown', (event) => {
+    if (event.key == 'Enter') {
+	event.preventDefault();
+    }
+    if (tui.mode == mode_login && event.key == 'Enter') {
+        server.send(['LOGIN', tui.inputEl.value]);
         tui.switch_mode(mode_login);
     } else if (tui.mode == mode_annotate && event.key == 'Enter') {
-        explorer.annotate(tui.input);
+        explorer.annotate(tui.inputEl.value);
         tui.switch_mode(mode_study, true);
     } else if (tui.mode == mode_chat && event.key == 'Enter') {
-        let [tokens, token_starts] = parser.tokenize(tui.input);
+        let [tokens, token_starts] = parser.tokenize(tui.inputEl.value);
         if (tokens.length > 0 && tokens[0].length > 0) {
             if (tokens[0][0] == ':') {
                 if (tokens[0] == ':play' || tokens[0] == ':p') {
@@ -519,7 +517,7 @@ document.addEventListener('keydown', (event) => {
                     }
                 } else if (tokens[0] == ':msg') {
                     if (tokens.length > 2) {
-                        let msg = tui.input.slice(token_starts[2]);
+                        let msg = tui.inputEl.value.slice(token_starts[2]);
                         server.send(['QUERY', tokens[1], msg]);
                     } else {
                         tui.log_msg('? need message target and message');
@@ -528,17 +526,19 @@ document.addEventListener('keydown', (event) => {
                     tui.log_msg('? unknown command');
                 }
 	    } else {
-	        server.send(['ALL', tui.input]);
+	        server.send(['ALL', tui.inputEl.value]);
             }
-	} else if (tui.input.length > 0) {
-	    server.send(['ALL', tui.input]);
+	} else if (tui.inputEl.valuelength > 0) {
+	    server.send(['ALL', tui.inputEl.value]);
         }
         tui.empty_input();
         tui.full_refresh();
       } else if (tui.mode == mode_play) {
           if (event.key === 'c') {
+              event.preventDefault();
               tui.switch_mode(mode_chat);
           } else if (event.key === 'e') {
+              event.preventDefault();
               tui.switch_mode(mode_edit);
           } else if (event.key === '?') {
               tui.switch_mode(mode_study);
@@ -555,11 +555,6 @@ document.addEventListener('keydown', (event) => {
           } else if (event.key === tui.key_down) {
               server.send(['TASK:MOVE', 'DOWN']);
           };
-    } else if (tui.mode == mode_edit) {
-        if (event.key != "Shift" && event.key.length == 1) {
-            server.send(["TASK:WRITE", event.key]);
-            tui.switch_mode(mode_play);
-        }
     } else if (tui.mode == mode_study) {
         if (event.key === 'c') {
             tui.switch_mode(mode_chat);
@@ -574,6 +569,7 @@ document.addEventListener('keydown', (event) => {
         } else if (event.key === tui.key_down) {
 	      explorer.move('down');
         } else if (event.key === 'e') {
+          event.preventDefault();
           tui.switch_mode(mode_annotate);
         };
     }
@@ -607,5 +603,10 @@ cols_selector.addEventListener('input', function() {
     tui.window_width = terminal.cols / 2,
     tui.full_refresh();
 }, false);
+window.setInterval(function() {
+    if (!(['input', 'n_cols', 'n_rows', 'WASD_selector'].includes(document.activeElement.id))) {
+        tui.inputEl.focus();
+    }
+}, 100);
 </script>
 </body></html>
-- 
2.30.2