some mobile improvements

index.html

@@ -4,6 +4,8 @@
 <style>
     #text {
         white-space: pre;
+        outline: none;
+        caret-color: transparent;
     }
     .cursor {
         border-left: 2px solid #000;

lib/keyboard.js

@@ -4,9 +4,11 @@ import { elementToPos } from "./mouse.js";
 
 export function setupInput(buffer, cursor, selection, onChange) {
   let isMouseDown = false;
+  const textEl = document.getElementById("text");
+  textEl.contentEditable = true;
 
   function startDrag(e) {
-    if (!e.target.closest("#text")) return;
+    if (e.target !== textEl && !e.target.closest("#text")) return;
     isMouseDown = true;
     const pos = elementToPos(e.clientX, e.clientY, buffer);
     cursor.line = pos.line;
@@ -30,7 +32,7 @@ export function setupInput(buffer, cursor, selection, onChange) {
   }
 
   function selectWord(e) {
-    if (!e.target.closest("#text")) return;
+    if (e.target !== textEl && !e.target.closest("#text")) return;
     const pos = elementToPos(e.clientX, e.clientY, buffer);
     const line = buffer[pos.line];
     let start = pos.col;
@@ -84,6 +86,22 @@ export function setupInput(buffer, cursor, selection, onChange) {
     clearSelection(selection);
   }
 
+  function deleteBackward() {
+    if (hasSelection(selection)) {
+      deleteSelection(buffer, cursor, selection);
+    } else if (cursor.col > 0) {
+      const line = buffer[cursor.line];
+      buffer[cursor.line] = line.slice(0, cursor.col - 1) + line.slice(cursor.col);
+      cursor.col--;
+    } else if (cursor.line > 0) {
+      cursor.col = buffer[cursor.line - 1].length;
+      buffer[cursor.line - 1] += buffer[cursor.line];
+      buffer.splice(cursor.line, 1);
+      cursor.line--;
+    }
+    clearSelection(selection);
+  }
+
   function selectAll() {
     selection.anchor = { line: 0, col: 0 };
     selection.head = { line: buffer.length - 1, col: buffer[buffer.length - 1].length };
@@ -91,12 +109,41 @@ export function setupInput(buffer, cursor, selection, onChange) {
     cursor.col = buffer[buffer.length - 1].length;
   }
 
-  document.addEventListener("mousedown", startDrag);
-  document.addEventListener("mousemove", drag);
-  document.addEventListener("mouseup", endDrag);
-  document.addEventListener("dblclick", selectWord);
+  textEl.addEventListener("beforeinput", (e) => {
+    e.preventDefault();
 
-  document.addEventListener("paste", (e) => {
+    if (e.inputType === "insertText") {
+      insertText(e.data);
+      onChange();
+      return;
+    }
+    if (e.inputType === "insertCompositionText") {
+      return;
+    }
+    if (e.inputType === "deleteContentBackward") {
+      deleteBackward();
+      onChange();
+      return;
+    }
+    if (e.inputType === "deleteContentForward") {
+      if (hasSelection(selection)) {
+        deleteSelection(buffer, cursor, selection);
+      } else if (cursor.col < buffer[cursor.line].length) {
+        const line = buffer[cursor.line];
+        buffer[cursor.line] = line.slice(0, cursor.col) + line.slice(cursor.col + 1);
+      }
+      clearSelection(selection);
+      onChange();
+      return;
+    }
+    if (e.inputType === "insertFromPaste") {
+      insertText(e.clipboardData.getData("text"));
+      onChange();
+      return;
+    }
+  });
+
+  textEl.addEventListener("paste", (e) => {
     e.preventDefault();
     const text = e.clipboardData.getData("text");
     if (!text) return;
@@ -104,28 +151,32 @@ export function setupInput(buffer, cursor, selection, onChange) {
     onChange();
   });
 
+  textEl.addEventListener("copy", (e) => {
+    e.preventDefault();
+    const text = getSelectedText();
+    if (text) e.clipboardData.setData("text/plain", text);
+  });
+
+  textEl.addEventListener("cut", (e) => {
+    e.preventDefault();
+    const text = getSelectedText();
+    if (text) e.clipboardData.setData("text/plain", text);
+    deleteSelection(buffer, cursor, selection);
+    onChange();
+  });
+
+  document.addEventListener("mousedown", startDrag);
+  document.addEventListener("mousemove", drag);
+  document.addEventListener("mouseup", endDrag);
+  document.addEventListener("dblclick", selectWord);
+
+  textEl.focus();
+
   document.addEventListener("keydown", (e) => {
     const mod = e.ctrlKey || e.metaKey;
     const extending = e.shiftKey;
 
     if (mod) {
-      if (e.key === "c") {
-        e.preventDefault();
-        const text = getSelectedText();
-        if (text) navigator.clipboard.writeText(text);
-        return;
-      }
-      if (e.key === "x") {
-        e.preventDefault();
-        const text = getSelectedText();
-        if (text) navigator.clipboard.writeText(text);
-        deleteSelection(buffer, cursor, selection);
-        onChange();
-        return;
-      }
-      if (e.key === "v") {
-        return;
-      }
       if (e.key === "a") {
         e.preventDefault();
         selectAll();
@@ -173,19 +224,7 @@ export function setupInput(buffer, cursor, selection, onChange) {
     }
     if (e.key === "Backspace") {
       e.preventDefault();
-      if (hasSelection(selection)) {
-        deleteSelection(buffer, cursor, selection);
-      } else if (cursor.col > 0) {
-        const line = buffer[cursor.line];
-        buffer[cursor.line] = line.slice(0, cursor.col - 1) + line.slice(cursor.col);
-        cursor.col--;
-      } else if (cursor.line > 0) {
-        cursor.col = buffer[cursor.line - 1].length;
-        buffer[cursor.line - 1] += buffer[cursor.line];
-        buffer.splice(cursor.line, 1);
-        cursor.line--;
-      }
-      clearSelection(selection);
+      deleteBackward();
       onChange();
       return;
     }
@@ -202,14 +241,5 @@ export function setupInput(buffer, cursor, selection, onChange) {
       onChange();
       return;
     }
-    if (e.key.length === 1) {
-      e.preventDefault();
-      if (hasSelection(selection)) deleteSelection(buffer, cursor, selection);
-      const line = buffer[cursor.line];
-      buffer[cursor.line] = line.slice(0, cursor.col) + e.key + line.slice(cursor.col);
-      cursor.col++;
-      clearSelection(selection);
-      onChange();
-    }
   });
 }