Move additional utility functions to DOM

ext/bg/js/search-query-parser.js

@@ -38,7 +38,7 @@ class QueryParser {
     }
 
     onMouseDown(e) {
-        if (Frontend.isMouseButton('primary', e)) {
+        if (DOM.isMouseButtonPressed(e, 'primary')) {
             this.clickScanPrevent = false;
         }
     }
@@ -47,7 +47,7 @@ class QueryParser {
         if (
             this.search.options.scanning.clickGlossary &&
             !this.clickScanPrevent &&
-            Frontend.isMouseButton('primary', e)
+            DOM.isMouseButtonPressed(e, 'primary')
         ) {
             const selectText = this.search.options.scanning.selectText;
             this.onTermLookup(e, {disableScroll: true, selectText});
@@ -55,7 +55,7 @@ class QueryParser {
     }
 
     onMouseMove(e) {
-        if (this.pendingLookup || Frontend.isMouseButton('primary', e)) {
+        if (this.pendingLookup || DOM.isMouseButtonDown(e, 'primary')) {
             return;
         }
 
@@ -63,7 +63,7 @@ class QueryParser {
         const scanningModifier = scanningOptions.modifier;
         if (!(
             Frontend.isScanningModifierPressed(scanningModifier, e) ||
-            (scanningOptions.middleMouse && Frontend.isMouseButton('auxiliary', e))
+            (scanningOptions.middleMouse && DOM.isMouseButtonDown(e, 'auxiliary'))
         )) {
             return;
         }

ext/fg/js/frontend.js

@@ -80,7 +80,7 @@ class Frontend {
     onMouseMove(e) {
         this.popupTimerClear();
 
-        if (this.pendingLookup || Frontend.isMouseButtonDown('primary', e)) {
+        if (this.pendingLookup || DOM.isMouseButtonDown(e, 'primary')) {
             return;
         }
 
@@ -88,7 +88,7 @@ class Frontend {
         const scanningModifier = scanningOptions.modifier;
         if (!(
             Frontend.isScanningModifierPressed(scanningModifier, e) ||
-            (scanningOptions.middleMouse && Frontend.isMouseButtonDown('auxiliary', e))
+            (scanningOptions.middleMouse && DOM.isMouseButtonDown(e, 'auxiliary'))
         )) {
             return;
         }
@@ -487,37 +487,6 @@ class Frontend {
             default: return false;
         }
     }
-
-    static isMouseButton(button, mouseEvent) {
-        switch (mouseEvent.type) {
-            case 'mouseup':
-            case 'mousedown':
-            case 'click':
-                return Frontend.isMouseButtonPressed(button, mouseEvent);
-            default:
-                return Frontend.isMouseButtonDown(button, mouseEvent);
-        }
-    }
-
-    static isMouseButtonPressed(button, mouseEvent) {
-        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(button, mouseEvent) {
-        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;
-        }
-    }
 }
 
 Frontend.windowMessageHandlers = {

ext/mixed/js/display.js

@@ -85,7 +85,7 @@ class Display {
     }
 
     onGlossaryMouseDown(e) {
-        if (Frontend.isMouseButtonPressed('primary', e)) {
+        if (DOM.isMouseButtonPressed(e, 'primary')) {
             this.clickScanPrevent = false;
         }
     }
@@ -95,7 +95,7 @@ class Display {
     }
 
     onGlossaryMouseUp(e) {
-        if (!this.clickScanPrevent && Frontend.isMouseButtonPressed('primary', e)) {
+        if (!this.clickScanPrevent && DOM.isMouseButtonPressed(e, 'primary')) {
             this.onTermLookup(e);
         }
     }

ext/mixed/js/dom.js

@@ -43,4 +43,24 @@ class DOM {
         }
         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;
+        }
+    }
 }