From dfeff5d7177388dbe898d392688ee6614abff1bd Mon Sep 17 00:00:00 2001
From: Andreas Tolfsen <ato@sny.no>
Date: Sun, 28 Oct 2018 23:44:14 +0000
Subject: [PATCH] remove selectionchange.js

We introduced the DOM selectionchange shim because Firefox did not
originally support it.  It does, however, support it in Firefox 52
and newer, which is fresh enough.
---
 index.html         |   2 -
 selectionchange.js | 138 ---------------------------------------------
 2 files changed, 140 deletions(-)
 delete mode 100644 selectionchange.js

diff --git a/index.html b/index.html
index d30518881..c9302c8a2 100644
--- a/index.html
+++ b/index.html
@@ -47,8 +47,6 @@
   noIDLSorting: true,
 };
 </script>
-<script src=selectionchange.js></script>
-<script>selectionchange.start()</script>
 <script src=issue.js></script>
 
 <style>
diff --git a/selectionchange.js b/selectionchange.js
deleted file mode 100644
index 13cf255f6..000000000
--- a/selectionchange.js
+++ /dev/null
@@ -1,138 +0,0 @@
-// github.com/2is10/selectionchange-polyfill
-
-const selectionchange = ((undefined => {
-
-  const MAC = /^Mac/.test(navigator.platform);
-  const MAC_MOVE_KEYS = [65, 66, 69, 70, 78, 80]; // A, B, E, F, P, N from support.apple.com/en-ie/HT201236
-  const SELECT_ALL_MODIFIER = MAC ? 'metaKey' : 'ctrlKey';
-  const RANGE_PROPS = ['startContainer', 'startOffset', 'endContainer', 'endOffset'];
-  const HAS_OWN_SELECTION = {INPUT: 1, TEXTAREA: 1};
-
-  let ranges;
-
-  return {
-    start(doc) {
-      const d = doc || document;
-      if (ranges || !hasNativeSupport(d) && (ranges = newWeakMap())) {
-        if (!ranges.has(d)) {
-          ranges.set(d, getSelectionRange(d));
-          on(d, 'input', onInput);
-          on(d, 'keydown', onKeyDown);
-          on(d, 'mousedown', onMouseDown);
-          on(d, 'mousemove', onMouseMove);
-          on(d, 'mouseup', onMouseUp);
-          on(d.defaultView, 'focus', onFocus);
-        }
-      }
-    },
-    stop(doc) {
-      const d = doc || document;
-      if (ranges && ranges.has(d)) {
-        ranges['delete'](d);
-        off(d, 'input', onInput);
-        off(d, 'keydown', onKeyDown);
-        off(d, 'mousedown', onMouseDown);
-        off(d, 'mousemove', onMouseMove);
-        off(d, 'mouseup', onMouseUp);
-        off(d.defaultView, 'focus', onFocus);
-      }
-    }
-  };
-
-  function hasNativeSupport(doc) {
-    const osc = doc.onselectionchange;
-    if (osc !== undefined) {
-      try {
-        doc.onselectionchange = 0;
-        return doc.onselectionchange === null;
-      } catch (e) {
-      } finally {
-        doc.onselectionchange = osc;
-      }
-    }
-    return false;
-  }
-
-  function newWeakMap() {
-    if (typeof WeakMap !== 'undefined') {
-      return new WeakMap();
-    } else {
-      console.error('selectionchange: WeakMap not supported');
-      return null;
-    }
-  }
-
-  function getSelectionRange(doc) {
-    const s = doc.getSelection();
-    return s.rangeCount ? s.getRangeAt(0) : null;
-  }
-
-  function on(el, eventType, handler) {
-    el.addEventListener(eventType, handler, true);
-  }
-
-  function off(el, eventType, handler) {
-    el.removeEventListener(eventType, handler, true);
-  }
-
-  function onInput(e) {
-    if (!HAS_OWN_SELECTION[e.target.tagName]) {
-      dispatchIfChanged(this, true);
-    }
-  }
-
-  function onKeyDown(e) {
-    const code = e.keyCode;
-    if (code === 65 && e[SELECT_ALL_MODIFIER] && !e.shiftKey && !e.altKey || // Ctrl-A or Cmd-A
-      code >= 35 && code <= 40 || // home, end and arrow key
-      e.ctrlKey && MAC && MAC_MOVE_KEYS.includes(code)) {
-      if (!HAS_OWN_SELECTION[e.target.tagName]) {
-        setTimeout(dispatchIfChanged.bind(null, this), 0);
-      }
-    }
-  }
-
-  function onMouseDown(e) {
-    if (e.button === 0) {
-      on(this, 'mousemove', onMouseMove);
-      setTimeout(dispatchIfChanged.bind(null, this), 0);
-    }
-  }
-
-  function onMouseMove(e) {  // only needed while primary button is down
-    if (e.buttons & 1) {
-      dispatchIfChanged(this);
-    } else {
-      off(this, 'mousemove', onMouseMove);
-    }
-  }
-
-  function onMouseUp(e) {
-    if (e.button === 0) {
-      setTimeout(dispatchIfChanged.bind(null, this), 0);
-    } else {
-      off(this, 'mousemove', onMouseMove);
-    }
-  }
-
-  function onFocus() {
-    setTimeout(dispatchIfChanged.bind(null, this.document), 0);
-  }
-
-  function dispatchIfChanged(doc, force) {
-    const r = getSelectionRange(doc);
-    if (force || !sameRange(r, ranges.get(doc))) {
-      ranges.set(doc, r);
-      setTimeout(doc.dispatchEvent.bind(doc, new Event('selectionchange')), 0);
-    }
-  }
-
-  function sameRange(r1, r2) {
-    return r1 === r2 || r1 && r2 && RANGE_PROPS.every(prop => r1[prop] === r2[prop]);
-  }
-}))();
-
-if (typeof module !== 'undefined') {
-  // CommonJS/Node compatibility.
-  module.exports = selectionchange;
-}