DOM + DocumentUtil merge (#727)

* Add DOM functions to DocumentUtil

* Use DocumentUtil instead of DOM

* Remove DOM

* Move document-util.js into mixed

13 files changed, 155 insertions, 181 deletions

diff --git a/ext/bg/js/search.js b/ext/bg/js/search.js
index 7cad2671..0a0699a9 100644
--- a/ext/bg/js/search.js
+++ b/ext/bg/js/search.js
@@ -17,8 +17,8 @@
 
 /* global
  * ClipboardMonitor
- * DOM
  * Display
+ * DocumentUtil
  * api
  * wanakana
  */
@@ -104,7 +104,7 @@ class DisplaySearch extends Display {
     }
 
     onKeyDown(e) {
-        const key = DOM.getKeyFromEvent(e);
+        const key = DocumentUtil.getKeyFromEvent(e);
         const ignoreKeys = this._onKeyDownIgnoreKeys;
 
         const activeModifierMap = new Map([
diff --git a/ext/bg/js/settings/conditions-ui.js b/ext/bg/js/settings/conditions-ui.js
index 031689a7..98b3d432 100644
--- a/ext/bg/js/settings/conditions-ui.js
+++ b/ext/bg/js/settings/conditions-ui.js
@@ -16,7 +16,7 @@
  */
 
 /* global
- * DOM
+ * DocumentUtil
  * conditionsNormalizeOptionValue
  */
 
@@ -323,7 +323,7 @@ ConditionsUI.Condition = class Condition {
         const pressedKeyIndices = new Set();
 
         const onKeyDown = ({originalEvent}) => {
-            const pressedKeyEventName = DOM.getKeyFromEvent(originalEvent);
+            const pressedKeyEventName = DocumentUtil.getKeyFromEvent(originalEvent);
             if (pressedKeyEventName === 'Escape' || pressedKeyEventName === 'Backspace') {
                 pressedKeyIndices.clear();
                 inputInner.val('');
@@ -331,7 +331,7 @@ ConditionsUI.Condition = class Condition {
                 return;
             }
 
-            const pressedModifiers = DOM.getActiveModifiers(originalEvent);
+            const pressedModifiers = DocumentUtil.getActiveModifiers(originalEvent);
             // https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/metaKey
             // https://askubuntu.com/questions/567731/why-is-shift-alt-being-mapped-to-meta
             // It works with mouse events on some platforms, so try to determine if metaKey is pressed
diff --git a/ext/bg/search.html b/ext/bg/search.html
index 9556a1a1..6f7e04c9 100644
--- a/ext/bg/search.html
+++ b/ext/bg/search.html
@@ -73,12 +73,11 @@
         <script src="/mixed/js/core.js"></script>
         <script src="/mixed/js/yomichan.js"></script>
         <script src="/mixed/js/comm.js"></script>
-        <script src="/mixed/js/dom.js"></script>
         <script src="/mixed/js/api.js"></script>
         <script src="/mixed/js/japanese.js"></script>
 
         <script src="/bg/js/handlebars.js"></script>
-        <script src="/fg/js/document-util.js"></script>
+        <script src="/mixed/js/document-util.js"></script>
         <script src="/fg/js/dom-text-scanner.js"></script>
         <script src="/fg/js/source.js"></script>
         <script src="/mixed/js/audio-system.js"></script>
diff --git a/ext/bg/settings-popup-preview.html b/ext/bg/settings-popup-preview.html
index 3479efa4..59924a27 100644
--- a/ext/bg/settings-popup-preview.html
+++ b/ext/bg/settings-popup-preview.html
@@ -121,13 +121,12 @@
         <script src="/mixed/js/core.js"></script>
         <script src="/mixed/js/yomichan.js"></script>
         <script src="/mixed/js/comm.js"></script>
-        <script src="/mixed/js/dom.js"></script>
         <script src="/mixed/js/api.js"></script>
         <script src="/mixed/js/dynamic-loader.js"></script>
         <script src="/mixed/js/frame-client.js"></script>
         <script src="/mixed/js/text-scanner.js"></script>
 
-        <script src="/fg/js/document-util.js"></script>
+        <script src="/mixed/js/document-util.js"></script>
         <script src="/fg/js/dom-text-scanner.js"></script>
         <script src="/fg/js/popup.js"></script>
         <script src="/fg/js/source.js"></script>
diff --git a/ext/bg/settings.html b/ext/bg/settings.html
index 8326a65c..f6025f55 100644
--- a/ext/bg/settings.html
+++ b/ext/bg/settings.html
@@ -1135,7 +1135,6 @@
         <script src="/mixed/js/core.js"></script>
         <script src="/mixed/js/yomichan.js"></script>
         <script src="/mixed/js/comm.js"></script>
-        <script src="/mixed/js/dom.js"></script>
         <script src="/mixed/js/environment.js"></script>
         <script src="/mixed/js/api.js"></script>
         <script src="/mixed/js/japanese.js"></script>
@@ -1148,6 +1147,7 @@
         <script src="/bg/js/profile-conditions.js"></script>
         <script src="/bg/js/util.js"></script>
         <script src="/mixed/js/audio-system.js"></script>
+        <script src="/mixed/js/document-util.js"></script>
 
         <script src="/bg/js/settings/anki.js"></script>
         <script src="/bg/js/settings/anki-templates.js"></script>
diff --git a/ext/fg/float.html b/ext/fg/float.html
index 51aa2350..bd2508e6 100644
--- a/ext/fg/float.html
+++ b/ext/fg/float.html
@@ -47,11 +47,10 @@
         <script src="/mixed/js/core.js"></script>
         <script src="/mixed/js/yomichan.js"></script>
         <script src="/mixed/js/comm.js"></script>
-        <script src="/mixed/js/dom.js"></script>
         <script src="/mixed/js/api.js"></script>
         <script src="/mixed/js/japanese.js"></script>
 
-        <script src="/fg/js/document-util.js"></script>
+        <script src="/mixed/js/document-util.js"></script>
         <script src="/fg/js/dom-text-scanner.js"></script>
         <script src="/fg/js/source.js"></script>
         <script src="/mixed/js/audio-system.js"></script>
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index ccffbab6..0c18fb2a 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -16,7 +16,6 @@
  */
 
 /* global
- * DOM
  * DocumentUtil
  * FrameOffsetForwarder
  * PopupProxy
@@ -98,7 +97,7 @@ class Frontend {
         this._textScanner.prepare();
 
         window.addEventListener('resize', this._onResize.bind(this), false);
-        DOM.addFullscreenChangeEventListener(this._updatePopup.bind(this));
+        DocumentUtil.addFullscreenChangeEventListener(this._updatePopup.bind(this));
 
         const visualViewport = window.visualViewport;
         if (visualViewport !== null && typeof visualViewport === 'object') {
@@ -274,7 +273,7 @@ class Frontend {
         if (
             isIframe &&
             showIframePopupsInRootFrame &&
-            DOM.getFullscreenElement() === null &&
+            DocumentUtil.getFullscreenElement() === null &&
             this._allowRootFramePopupProxy
         ) {
             popupPromise = this._popupCache.get('iframe');
diff --git a/ext/fg/js/popup.js b/ext/fg/js/popup.js
index 22672706..8ea1afd0 100644
--- a/ext/fg/js/popup.js
+++ b/ext/fg/js/popup.js
@@ -16,7 +16,7 @@
  */
 
 /* global
- * DOM
+ * DocumentUtil
  * FrameClient
  * api
  * dynamicLoader
@@ -349,7 +349,7 @@ class Popup {
             return;
         }
 
-        DOM.addFullscreenChangeEventListener(this._onFullscreenChanged.bind(this), this._fullscreenEventListeners);
+        DocumentUtil.addFullscreenChangeEventListener(this._onFullscreenChanged.bind(this), this._fullscreenEventListeners);
     }
 
     _onFullscreenChanged() {
@@ -475,7 +475,7 @@ class Popup {
 
     _getFrameParentElement() {
         const defaultParent = document.body;
-        const fullscreenElement = DOM.getFullscreenElement();
+        const fullscreenElement = DocumentUtil.getFullscreenElement();
         if (
             fullscreenElement === null ||
             fullscreenElement.shadowRoot ||
diff --git a/ext/manifest.json b/ext/manifest.json
index b22e75c6..12286c40 100644
--- a/ext/manifest.json
+++ b/ext/manifest.json
@@ -41,12 +41,11 @@
                 "mixed/js/core.js",
                 "mixed/js/yomichan.js",
                 "mixed/js/comm.js",
-                "mixed/js/dom.js",
                 "mixed/js/api.js",
                 "mixed/js/dynamic-loader.js",
                 "mixed/js/frame-client.js",
                 "mixed/js/text-scanner.js",
-                "fg/js/document-util.js",
+                "mixed/js/document-util.js",
                 "fg/js/dom-text-scanner.js",
                 "fg/js/popup.js",
                 "fg/js/source.js",
diff --git a/ext/mixed/js/display.js b/ext/mixed/js/display.js
index 170b9d23..08ececc7 100644
--- a/ext/mixed/js/display.js
+++ b/ext/mixed/js/display.js
@@ -17,7 +17,6 @@
 
 /* global
  * AudioSystem
- * DOM
  * DisplayGenerator
  * DisplayHistory
  * DocumentUtil
@@ -186,11 +185,11 @@ class Display extends EventDispatcher {
     }
 
     onKeyDown(e) {
-        const key = DOM.getKeyFromEvent(e);
+        const key = DocumentUtil.getKeyFromEvent(e);
         const handlers = this._hotkeys.get(key);
         if (typeof handlers === 'undefined') { return false; }
 
-        const eventModifiers = DOM.getActiveModifiers(e);
+        const eventModifiers = DocumentUtil.getActiveModifiers(e);
         for (const {modifiers, action} of handlers) {
             if (getSetDifference(modifiers, eventModifiers).size !== 0) { continue; }
 
@@ -558,7 +557,7 @@ class Display extends EventDispatcher {
     }
 
     _onGlossaryMouseDown(e) {
-        if (DOM.isMouseButtonPressed(e, 'primary')) {
+        if (DocumentUtil.isMouseButtonPressed(e, 'primary')) {
             this._clickScanPrevent = false;
         }
     }
@@ -568,7 +567,7 @@ class Display extends EventDispatcher {
     }
 
     _onGlossaryMouseUp(e) {
-        if (!this._clickScanPrevent && DOM.isMouseButtonPressed(e, 'primary')) {
+        if (!this._clickScanPrevent && DocumentUtil.isMouseButtonPressed(e, 'primary')) {
             try {
                 this._onTermLookup(e);
             } catch (error) {
diff --git a/ext/fg/js/document-util.js b/ext/mixed/js/document-util.js
index d3bba30f..ba39942d 100644
--- a/ext/fg/js/document-util.js
+++ b/ext/mixed/js/document-util.js
@@ -16,7 +16,6 @@
  */
 
 /* global
- * DOM
  * DOMTextScanner
  * TextSourceElement
  * TextSourceRange
@@ -134,6 +133,132 @@ class DocumentUtil {
         };
     }
 
+    static isPointInRect(x, y, rect) {
+        return (
+            x >= rect.left && x < rect.right &&
+            y >= rect.top && y < rect.bottom
+        );
+    }
+
+    static isPointInAnyRect(x, y, rects) {
+        for (const rect of rects) {
+            if (this.isPointInRect(x, y, rect)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    static isPointInSelection(x, y, selection) {
+        for (let i = 0; i < selection.rangeCount; ++i) {
+            const range = selection.getRangeAt(i);
+            if (this.isPointInAnyRect(x, y, range.getClientRects())) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    static isMouseButtonPressed(mouseEvent, button) {
+        const mouseEventButton = mouseEvent.button;
+        switch (button) {
+            case 'primary': return mouseEventButton === 0;
+            case 'secondary': return mouseEventButton === 2;
+            case 'auxiliary': return mouseEventButton === 1;
+            default: return false;
+        }
+    }
+
+    static isMouseButtonDown(mouseEvent, button) {
+        const mouseEventButtons = mouseEvent.buttons;
+        switch (button) {
+            case 'primary': return (mouseEventButtons & 0x1) !== 0x0;
+            case 'secondary': return (mouseEventButtons & 0x2) !== 0x0;
+            case 'auxiliary': return (mouseEventButtons & 0x4) !== 0x0;
+            default: return false;
+        }
+    }
+
+    static getActiveModifiers(event) {
+        const modifiers = new Set();
+        if (event.altKey) { modifiers.add('alt'); }
+        if (event.ctrlKey) { modifiers.add('ctrl'); }
+        if (event.metaKey) { modifiers.add('meta'); }
+        if (event.shiftKey) { modifiers.add('shift'); }
+        return modifiers;
+    }
+
+    static getKeyFromEvent(event) {
+        const key = event.key;
+        return (typeof key === 'string' ? (key.length === 1 ? key.toUpperCase() : key) : '');
+    }
+
+    static addFullscreenChangeEventListener(onFullscreenChanged, eventListenerCollection=null) {
+        const target = document;
+        const options = false;
+        const fullscreenEventNames = [
+            'fullscreenchange',
+            'MSFullscreenChange',
+            'mozfullscreenchange',
+            'webkitfullscreenchange'
+        ];
+        for (const eventName of fullscreenEventNames) {
+            if (eventListenerCollection === null) {
+                target.addEventListener(eventName, onFullscreenChanged, options);
+            } else {
+                eventListenerCollection.addEventListener(target, eventName, onFullscreenChanged, options);
+            }
+        }
+    }
+
+    static getFullscreenElement() {
+        return (
+            document.fullscreenElement ||
+            document.msFullscreenElement ||
+            document.mozFullScreenElement ||
+            document.webkitFullscreenElement ||
+            null
+        );
+    }
+
+    static getNodesInRange(range) {
+        const end = range.endContainer;
+        const nodes = [];
+        for (let node = range.startContainer; node !== null; node = this.getNextNode(node)) {
+            nodes.push(node);
+            if (node === end) { break; }
+        }
+        return nodes;
+    }
+
+    static getNextNode(node) {
+        let next = node.firstChild;
+        if (next === null) {
+            while (true) {
+                next = node.nextSibling;
+                if (next !== null) { break; }
+
+                next = node.parentNode;
+                if (next === null) { break; }
+
+                node = next;
+            }
+        }
+        return next;
+    }
+
+    static anyNodeMatchesSelector(nodes, selector) {
+        const ELEMENT_NODE = Node.ELEMENT_NODE;
+        for (let node of nodes) {
+            for (; node !== null; node = node.parentNode) {
+                if (node.nodeType !== ELEMENT_NODE) { continue; }
+                if (node.matches(selector)) { return true; }
+                break;
+            }
+        }
+        return false;
+    }
+
     // Private
 
     _setImposterStyle(style, propertyName, value) {
@@ -240,7 +365,7 @@ class DocumentUtil {
             const {node, offset, content} = new DOMTextScanner(range.endContainer, range.endOffset, true, false).seek(1);
             range.setEnd(node, offset);
 
-            if (!this._isWhitespace(content) && DOM.isPointInAnyRect(x, y, range.getClientRects())) {
+            if (!this._isWhitespace(content) && DocumentUtil.isPointInAnyRect(x, y, range.getClientRects())) {
                 return true;
             }
         } finally {
@@ -251,7 +376,7 @@ class DocumentUtil {
         const {node, offset, content} = new DOMTextScanner(range.startContainer, range.startOffset, true, false).seek(-1);
         range.setStart(node, offset);
 
-        if (!this._isWhitespace(content) && DOM.isPointInAnyRect(x, y, range.getClientRects())) {
+        if (!this._isWhitespace(content) && DocumentUtil.isPointInAnyRect(x, y, range.getClientRects())) {
             // This purposefully leaves the starting offset as modified and sets the range length to 0.
             range.setEnd(node, offset);
             return true;
diff --git a/ext/mixed/js/dom.js b/ext/mixed/js/dom.js
deleted file mode 100644
index 59fea9f6..00000000
--- a/ext/mixed/js/dom.js
+++ /dev/null
@@ -1,145 +0,0 @@
-/*
- * Copyright (C) 2019-2020  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-
-class DOM {
-    static isPointInRect(x, y, rect) {
-        return (
-            x >= rect.left && x < rect.right &&
-            y >= rect.top && y < rect.bottom
-        );
-    }
-
-    static isPointInAnyRect(x, y, rects) {
-        for (const rect of rects) {
-            if (DOM.isPointInRect(x, y, rect)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    static isPointInSelection(x, y, selection) {
-        for (let i = 0; i < selection.rangeCount; ++i) {
-            const range = selection.getRangeAt(i);
-            if (DOM.isPointInAnyRect(x, y, range.getClientRects())) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    static isMouseButtonPressed(mouseEvent, button) {
-        const mouseEventButton = mouseEvent.button;
-        switch (button) {
-            case 'primary': return mouseEventButton === 0;
-            case 'secondary': return mouseEventButton === 2;
-            case 'auxiliary': return mouseEventButton === 1;
-            default: return false;
-        }
-    }
-
-    static isMouseButtonDown(mouseEvent, button) {
-        const mouseEventButtons = mouseEvent.buttons;
-        switch (button) {
-            case 'primary': return (mouseEventButtons & 0x1) !== 0x0;
-            case 'secondary': return (mouseEventButtons & 0x2) !== 0x0;
-            case 'auxiliary': return (mouseEventButtons & 0x4) !== 0x0;
-            default: return false;
-        }
-    }
-
-    static getActiveModifiers(event) {
-        const modifiers = new Set();
-        if (event.altKey) { modifiers.add('alt'); }
-        if (event.ctrlKey) { modifiers.add('ctrl'); }
-        if (event.metaKey) { modifiers.add('meta'); }
-        if (event.shiftKey) { modifiers.add('shift'); }
-        return modifiers;
-    }
-
-    static getKeyFromEvent(event) {
-        const key = event.key;
-        return (typeof key === 'string' ? (key.length === 1 ? key.toUpperCase() : key) : '');
-    }
-
-    static addFullscreenChangeEventListener(onFullscreenChanged, eventListenerCollection=null) {
-        const target = document;
-        const options = false;
-        const fullscreenEventNames = [
-            'fullscreenchange',
-            'MSFullscreenChange',
-            'mozfullscreenchange',
-            'webkitfullscreenchange'
-        ];
-        for (const eventName of fullscreenEventNames) {
-            if (eventListenerCollection === null) {
-                target.addEventListener(eventName, onFullscreenChanged, options);
-            } else {
-                eventListenerCollection.addEventListener(target, eventName, onFullscreenChanged, options);
-            }
-        }
-    }
-
-    static getFullscreenElement() {
-        return (
-            document.fullscreenElement ||
-            document.msFullscreenElement ||
-            document.mozFullScreenElement ||
-            document.webkitFullscreenElement ||
-            null
-        );
-    }
-
-    static getNodesInRange(range) {
-        const end = range.endContainer;
-        const nodes = [];
-        for (let node = range.startContainer; node !== null; node = DOM.getNextNode(node)) {
-            nodes.push(node);
-            if (node === end) { break; }
-        }
-        return nodes;
-    }
-
-    static getNextNode(node) {
-        let next = node.firstChild;
-        if (next === null) {
-            while (true) {
-                next = node.nextSibling;
-                if (next !== null) { break; }
-
-                next = node.parentNode;
-                if (next === null) { break; }
-
-                node = next;
-            }
-        }
-        return next;
-    }
-
-    static anyNodeMatchesSelector(nodes, selector) {
-        const ELEMENT_NODE = Node.ELEMENT_NODE;
-        for (let node of nodes) {
-            for (; node !== null; node = node.parentNode) {
-                if (node.nodeType !== ELEMENT_NODE) { continue; }
-                if (node.matches(selector)) { return true; }
-                break;
-            }
-        }
-        return false;
-    }
-}
diff --git a/ext/mixed/js/text-scanner.js b/ext/mixed/js/text-scanner.js
index 923784b3..d0256b1e 100644
--- a/ext/mixed/js/text-scanner.js
+++ b/ext/mixed/js/text-scanner.js
@@ -16,7 +16,7 @@
  */
 
 /* global
- * DOM
+ * DocumentUtil
  */
 
 class TextScanner extends EventDispatcher {
@@ -155,8 +155,8 @@ class TextScanner extends EventDispatcher {
         if (this._ignoreNodes !== null && clonedTextSource.range) {
             length = clonedTextSource.text().length;
             while (clonedTextSource.range && length > 0) {
-                const nodes = DOM.getNodesInRange(clonedTextSource.range);
-                if (!DOM.anyNodeMatchesSelector(nodes, this._ignoreNodes)) {
+                const nodes = DocumentUtil.getNodesInRange(clonedTextSource.range);
+                if (!DocumentUtil.anyNodeMatchesSelector(nodes, this._ignoreNodes)) {
                     break;
                 }
                 --length;
@@ -204,16 +204,16 @@ class TextScanner extends EventDispatcher {
     _onMouseMove(e) {
         this._scanTimerClear();
 
-        if (this._pendingLookup || DOM.isMouseButtonDown(e, 'primary')) {
+        if (this._pendingLookup || DocumentUtil.isMouseButtonDown(e, 'primary')) {
             return;
         }
 
-        const modifiers = DOM.getActiveModifiers(e);
+        const modifiers = DocumentUtil.getActiveModifiers(e);
         this.trigger('activeModifiersChanged', {modifiers});
 
         if (!(
             this._isScanningModifierPressed(this._modifier, e) ||
-            (this._useMiddleMouse && DOM.isMouseButtonDown(e, 'auxiliary'))
+            (this._useMiddleMouse && DocumentUtil.isMouseButtonDown(e, 'auxiliary'))
         )) {
             return;
         }
@@ -241,7 +241,7 @@ class TextScanner extends EventDispatcher {
             return false;
         }
 
-        if (DOM.isMouseButtonDown(e, 'primary')) {
+        if (DocumentUtil.isMouseButtonDown(e, 'primary')) {
             this._scanTimerClear();
             this.clearSelection(false);
         }
@@ -284,7 +284,7 @@ class TextScanner extends EventDispatcher {
         this._preventNextClick = false;
 
         const primaryTouch = e.changedTouches[0];
-        if (DOM.isPointInSelection(primaryTouch.clientX, primaryTouch.clientY, window.getSelection())) {
+        if (DocumentUtil.isPointInSelection(primaryTouch.clientX, primaryTouch.clientY, window.getSelection())) {
             return;
         }