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-rw-r--r--ext/fg/float.html2
-rw-r--r--ext/fg/js/document-util.js381
-rw-r--r--ext/fg/js/document.js374
-rw-r--r--ext/fg/js/frontend.js8
4 files changed, 387 insertions, 378 deletions
diff --git a/ext/fg/float.html b/ext/fg/float.html
index 17378713..51aa2350 100644
--- a/ext/fg/float.html
+++ b/ext/fg/float.html
@@ -51,7 +51,7 @@
<script src="/mixed/js/api.js"></script>
<script src="/mixed/js/japanese.js"></script>
- <script src="/fg/js/document.js"></script>
+ <script src="/fg/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/document-util.js b/ext/fg/js/document-util.js
new file mode 100644
index 00000000..d3bba30f
--- /dev/null
+++ b/ext/fg/js/document-util.js
@@ -0,0 +1,381 @@
+/*
+ * Copyright (C) 2016-2020 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/>.
+ */
+
+/* global
+ * DOM
+ * DOMTextScanner
+ * TextSourceElement
+ * TextSourceRange
+ */
+
+class DocumentUtil {
+ constructor() {
+ this._transparentColorPattern = /rgba\s*\([^)]*,\s*0(?:\.0+)?\s*\)/;
+ }
+
+ getRangeFromPoint(x, y, deepContentScan) {
+ const elements = this._getElementsFromPoint(x, y, deepContentScan);
+ let imposter = null;
+ let imposterContainer = null;
+ let imposterSourceElement = null;
+ if (elements.length > 0) {
+ const element = elements[0];
+ switch (element.nodeName.toUpperCase()) {
+ case 'IMG':
+ case 'BUTTON':
+ return new TextSourceElement(element);
+ case 'INPUT':
+ imposterSourceElement = element;
+ [imposter, imposterContainer] = this._createImposter(element, false);
+ break;
+ case 'TEXTAREA':
+ imposterSourceElement = element;
+ [imposter, imposterContainer] = this._createImposter(element, true);
+ break;
+ }
+ }
+
+ const range = this._caretRangeFromPointExt(x, y, deepContentScan ? elements : []);
+ if (range !== null) {
+ if (imposter !== null) {
+ this._setImposterStyle(imposterContainer.style, 'z-index', '-2147483646');
+ this._setImposterStyle(imposter.style, 'pointer-events', 'none');
+ }
+ return new TextSourceRange(range, '', imposterContainer, imposterSourceElement);
+ } else {
+ if (imposterContainer !== null) {
+ imposterContainer.parentNode.removeChild(imposterContainer);
+ }
+ return null;
+ }
+ }
+
+ extractSentence(source, extent, layoutAwareScan) {
+ const quotesFwd = {'「': '」', '『': '』', "'": "'", '"': '"'};
+ const quotesBwd = {'」': '「', '』': '『', "'": "'", '"': '"'};
+ const terminators = '…。．.？?！!';
+
+ const sourceLocal = source.clone();
+ const position = sourceLocal.setStartOffset(extent, layoutAwareScan);
+ sourceLocal.setEndOffset(extent * 2 - position, layoutAwareScan, true);
+ const content = sourceLocal.text();
+
+ let quoteStack = [];
+
+ let startPos = 0;
+ for (let i = position; i >= startPos; --i) {
+ const c = content[i];
+
+ if (c === '\n') {
+ startPos = i + 1;
+ break;
+ }
+
+ if (quoteStack.length === 0 && (terminators.includes(c) || c in quotesFwd)) {
+ startPos = i + 1;
+ break;
+ }
+
+ if (quoteStack.length > 0 && c === quoteStack[0]) {
+ quoteStack.pop();
+ } else if (c in quotesBwd) {
+ quoteStack.unshift(quotesBwd[c]);
+ }
+ }
+
+ quoteStack = [];
+
+ let endPos = content.length;
+ for (let i = position; i <= endPos; ++i) {
+ const c = content[i];
+
+ if (c === '\n') {
+ endPos = i + 1;
+ break;
+ }
+
+ if (quoteStack.length === 0) {
+ if (terminators.includes(c)) {
+ endPos = i + 1;
+ break;
+ } else if (c in quotesBwd) {
+ endPos = i;
+ break;
+ }
+ }
+
+ if (quoteStack.length > 0 && c === quoteStack[0]) {
+ quoteStack.pop();
+ } else if (c in quotesFwd) {
+ quoteStack.unshift(quotesFwd[c]);
+ }
+ }
+
+ const text = content.substring(startPos, endPos);
+ const padding = text.length - text.replace(/^\s+/, '').length;
+
+ return {
+ text: text.trim(),
+ offset: position - startPos - padding
+ };
+ }
+
+ // Private
+
+ _setImposterStyle(style, propertyName, value) {
+ style.setProperty(propertyName, value, 'important');
+ }
+
+ _createImposter(element, isTextarea) {
+ const body = document.body;
+ if (body === null) { return [null, null]; }
+
+ const elementStyle = window.getComputedStyle(element);
+ const elementRect = element.getBoundingClientRect();
+ const documentRect = document.documentElement.getBoundingClientRect();
+ let left = elementRect.left - documentRect.left;
+ let top = elementRect.top - documentRect.top;
+
+ // Container
+ const container = document.createElement('div');
+ const containerStyle = container.style;
+ this._setImposterStyle(containerStyle, 'all', 'initial');
+ this._setImposterStyle(containerStyle, 'position', 'absolute');
+ this._setImposterStyle(containerStyle, 'left', '0');
+ this._setImposterStyle(containerStyle, 'top', '0');
+ this._setImposterStyle(containerStyle, 'width', `${documentRect.width}px`);
+ this._setImposterStyle(containerStyle, 'height', `${documentRect.height}px`);
+ this._setImposterStyle(containerStyle, 'overflow', 'hidden');
+ this._setImposterStyle(containerStyle, 'opacity', '0');
+ this._setImposterStyle(containerStyle, 'pointer-events', 'none');
+ this._setImposterStyle(containerStyle, 'z-index', '2147483646');
+
+ // Imposter
+ const imposter = document.createElement('div');
+ const imposterStyle = imposter.style;
+
+ let value = element.value;
+ if (value.endsWith('\n')) { value += '\n'; }
+ imposter.textContent = value;
+
+ for (let i = 0, ii = elementStyle.length; i < ii; ++i) {
+ const property = elementStyle[i];
+ this._setImposterStyle(imposterStyle, property, elementStyle.getPropertyValue(property));
+ }
+ this._setImposterStyle(imposterStyle, 'position', 'absolute');
+ this._setImposterStyle(imposterStyle, 'top', `${top}px`);
+ this._setImposterStyle(imposterStyle, 'left', `${left}px`);
+ this._setImposterStyle(imposterStyle, 'margin', '0');
+ this._setImposterStyle(imposterStyle, 'pointer-events', 'auto');
+
+ if (isTextarea) {
+ if (elementStyle.overflow === 'visible') {
+ this._setImposterStyle(imposterStyle, 'overflow', 'auto');
+ }
+ } else {
+ this._setImposterStyle(imposterStyle, 'overflow', 'hidden');
+ this._setImposterStyle(imposterStyle, 'white-space', 'nowrap');
+ this._setImposterStyle(imposterStyle, 'line-height', elementStyle.height);
+ }
+
+ container.appendChild(imposter);
+ body.appendChild(container);
+
+ // Adjust size
+ const imposterRect = imposter.getBoundingClientRect();
+ if (imposterRect.width !== elementRect.width || imposterRect.height !== elementRect.height) {
+ const width = parseFloat(elementStyle.width) + (elementRect.width - imposterRect.width);
+ const height = parseFloat(elementStyle.height) + (elementRect.height - imposterRect.height);
+ this._setImposterStyle(imposterStyle, 'width', `${width}px`);
+ this._setImposterStyle(imposterStyle, 'height', `${height}px`);
+ }
+ if (imposterRect.x !== elementRect.x || imposterRect.y !== elementRect.y) {
+ left += (elementRect.left - imposterRect.left);
+ top += (elementRect.top - imposterRect.top);
+ this._setImposterStyle(imposterStyle, 'left', `${left}px`);
+ this._setImposterStyle(imposterStyle, 'top', `${top}px`);
+ }
+
+ imposter.scrollTop = element.scrollTop;
+ imposter.scrollLeft = element.scrollLeft;
+
+ return [imposter, container];
+ }
+
+ _getElementsFromPoint(x, y, all) {
+ if (all) {
+ // document.elementsFromPoint can return duplicates which must be removed.
+ const elements = document.elementsFromPoint(x, y);
+ return elements.filter((e, i) => elements.indexOf(e) === i);
+ }
+
+ const e = document.elementFromPoint(x, y);
+ return e !== null ? [e] : [];
+ }
+
+ _isPointInRange(x, y, range) {
+ // Require a text node to start
+ if (range.startContainer.nodeType !== Node.TEXT_NODE) {
+ return false;
+ }
+
+ // Scan forward
+ const nodePre = range.endContainer;
+ const offsetPre = range.endOffset;
+ try {
+ 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())) {
+ return true;
+ }
+ } finally {
+ range.setEnd(nodePre, offsetPre);
+ }
+
+ // Scan backward
+ 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())) {
+ // This purposefully leaves the starting offset as modified and sets the range length to 0.
+ range.setEnd(node, offset);
+ return true;
+ }
+
+ // No match
+ return false;
+ }
+
+ _isWhitespace(string) {
+ return string.trim().length === 0;
+ }
+
+ _caretRangeFromPoint(x, y) {
+ if (typeof document.caretRangeFromPoint === 'function') {
+ // Chrome, Edge
+ return document.caretRangeFromPoint(x, y);
+ }
+
+ if (typeof document.caretPositionFromPoint === 'function') {
+ // Firefox
+ return this._caretPositionFromPoint(x, y);
+ }
+
+ // No support
+ return null;
+ }
+
+ _caretPositionFromPoint(x, y) {
+ const position = document.caretPositionFromPoint(x, y);
+ if (position === null) {
+ return null;
+ }
+ const node = position.offsetNode;
+ if (node === null) {
+ return null;
+ }
+
+ const range = document.createRange();
+ const offset = (node.nodeType === Node.TEXT_NODE ? position.offset : 0);
+ try {
+ range.setStart(node, offset);
+ range.setEnd(node, offset);
+ } catch (e) {
+ // Firefox throws new DOMException("The operation is insecure.")
+ // when trying to select a node from within a ShadowRoot.
+ return null;
+ }
+ return range;
+ }
+
+ _caretRangeFromPointExt(x, y, elements) {
+ const modifications = [];
+ try {
+ let i = 0;
+ let startContinerPre = null;
+ while (true) {
+ const range = this._caretRangeFromPoint(x, y);
+ if (range === null) {
+ return null;
+ }
+
+ const startContainer = range.startContainer;
+ if (startContinerPre !== startContainer) {
+ if (this._isPointInRange(x, y, range)) {
+ return range;
+ }
+ startContinerPre = startContainer;
+ }
+
+ i = this._disableTransparentElement(elements, i, modifications);
+ if (i < 0) {
+ return null;
+ }
+ }
+ } finally {
+ if (modifications.length > 0) {
+ this._restoreElementStyleModifications(modifications);
+ }
+ }
+ }
+
+ _disableTransparentElement(elements, i, modifications) {
+ while (true) {
+ if (i >= elements.length) {
+ return -1;
+ }
+
+ const element = elements[i++];
+ if (this._isElementTransparent(element)) {
+ const style = element.hasAttribute('style') ? element.getAttribute('style') : null;
+ modifications.push({element, style});
+ element.style.setProperty('pointer-events', 'none', 'important');
+ return i;
+ }
+ }
+ }
+
+ _restoreElementStyleModifications(modifications) {
+ for (const {element, style} of modifications) {
+ if (style === null) {
+ element.removeAttribute('style');
+ } else {
+ element.setAttribute('style', style);
+ }
+ }
+ }
+
+ _isElementTransparent(element) {
+ if (
+ element === document.body ||
+ element === document.documentElement
+ ) {
+ return false;
+ }
+ const style = window.getComputedStyle(element);
+ return (
+ parseFloat(style.opacity) <= 0 ||
+ style.visibility === 'hidden' ||
+ (style.backgroundImage === 'none' && this._isColorTransparent(style.backgroundColor))
+ );
+ }
+
+ _isColorTransparent(cssColor) {
+ return this._transparentColorPattern.test(cssColor);
+ }
+}
diff --git a/ext/fg/js/document.js b/ext/fg/js/document.js
deleted file mode 100644
index c288502c..00000000
--- a/ext/fg/js/document.js
+++ /dev/null
@@ -1,374 +0,0 @@
-/*
- * Copyright (C) 2016-2020 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/>.
- */
-
-/* global
- * DOM
- * DOMTextScanner
- * TextSourceElement
- * TextSourceRange
- */
-
-const REGEX_TRANSPARENT_COLOR = /rgba\s*\([^)]*,\s*0(?:\.0+)?\s*\)/;
-
-function docSetImposterStyle(style, propertyName, value) {
- style.setProperty(propertyName, value, 'important');
-}
-
-function docImposterCreate(element, isTextarea) {
- const body = document.body;
- if (body === null) { return [null, null]; }
-
- const elementStyle = window.getComputedStyle(element);
- const elementRect = element.getBoundingClientRect();
- const documentRect = document.documentElement.getBoundingClientRect();
- let left = elementRect.left - documentRect.left;
- let top = elementRect.top - documentRect.top;
-
- // Container
- const container = document.createElement('div');
- const containerStyle = container.style;
- docSetImposterStyle(containerStyle, 'all', 'initial');
- docSetImposterStyle(containerStyle, 'position', 'absolute');
- docSetImposterStyle(containerStyle, 'left', '0');
- docSetImposterStyle(containerStyle, 'top', '0');
- docSetImposterStyle(containerStyle, 'width', `${documentRect.width}px`);
- docSetImposterStyle(containerStyle, 'height', `${documentRect.height}px`);
- docSetImposterStyle(containerStyle, 'overflow', 'hidden');
- docSetImposterStyle(containerStyle, 'opacity', '0');
-
- docSetImposterStyle(containerStyle, 'pointer-events', 'none');
- docSetImposterStyle(containerStyle, 'z-index', '2147483646');
-
- // Imposter
- const imposter = document.createElement('div');
- const imposterStyle = imposter.style;
-
- let value = element.value;
- if (value.endsWith('\n')) { value += '\n'; }
- imposter.textContent = value;
-
- for (let i = 0, ii = elementStyle.length; i < ii; ++i) {
- const property = elementStyle[i];
- docSetImposterStyle(imposterStyle, property, elementStyle.getPropertyValue(property));
- }
- docSetImposterStyle(imposterStyle, 'position', 'absolute');
- docSetImposterStyle(imposterStyle, 'top', `${top}px`);
- docSetImposterStyle(imposterStyle, 'left', `${left}px`);
- docSetImposterStyle(imposterStyle, 'margin', '0');
- docSetImposterStyle(imposterStyle, 'pointer-events', 'auto');
-
- if (isTextarea) {
- if (elementStyle.overflow === 'visible') {
- docSetImposterStyle(imposterStyle, 'overflow', 'auto');
- }
- } else {
- docSetImposterStyle(imposterStyle, 'overflow', 'hidden');
- docSetImposterStyle(imposterStyle, 'white-space', 'nowrap');
- docSetImposterStyle(imposterStyle, 'line-height', elementStyle.height);
- }
-
- container.appendChild(imposter);
- body.appendChild(container);
-
- // Adjust size
- const imposterRect = imposter.getBoundingClientRect();
- if (imposterRect.width !== elementRect.width || imposterRect.height !== elementRect.height) {
- const width = parseFloat(elementStyle.width) + (elementRect.width - imposterRect.width);
- const height = parseFloat(elementStyle.height) + (elementRect.height - imposterRect.height);
- docSetImposterStyle(imposterStyle, 'width', `${width}px`);
- docSetImposterStyle(imposterStyle, 'height', `${height}px`);
- }
- if (imposterRect.x !== elementRect.x || imposterRect.y !== elementRect.y) {
- left += (elementRect.left - imposterRect.left);
- top += (elementRect.top - imposterRect.top);
- docSetImposterStyle(imposterStyle, 'left', `${left}px`);
- docSetImposterStyle(imposterStyle, 'top', `${top}px`);
- }
-
- imposter.scrollTop = element.scrollTop;
- imposter.scrollLeft = element.scrollLeft;
-
- return [imposter, container];
-}
-
-function docElementsFromPoint(x, y, all) {
- if (all) {
- // document.elementsFromPoint can return duplicates which must be removed.
- const elements = document.elementsFromPoint(x, y);
- return elements.filter((e, i) => elements.indexOf(e) === i);
- }
-
- const e = document.elementFromPoint(x, y);
- return e !== null ? [e] : [];
-}
-
-function docRangeFromPoint(x, y, deepDomScan) {
- const elements = docElementsFromPoint(x, y, deepDomScan);
- let imposter = null;
- let imposterContainer = null;
- let imposterSourceElement = null;
- if (elements.length > 0) {
- const element = elements[0];
- switch (element.nodeName.toUpperCase()) {
- case 'IMG':
- case 'BUTTON':
- return new TextSourceElement(element);
- case 'INPUT':
- imposterSourceElement = element;
- [imposter, imposterContainer] = docImposterCreate(element, false);
- break;
- case 'TEXTAREA':
- imposterSourceElement = element;
- [imposter, imposterContainer] = docImposterCreate(element, true);
- break;
- }
- }
-
- const range = caretRangeFromPointExt(x, y, deepDomScan ? elements : []);
- if (range !== null) {
- if (imposter !== null) {
- docSetImposterStyle(imposterContainer.style, 'z-index', '-2147483646');
- docSetImposterStyle(imposter.style, 'pointer-events', 'none');
- }
- return new TextSourceRange(range, '', imposterContainer, imposterSourceElement);
- } else {
- if (imposterContainer !== null) {
- imposterContainer.parentNode.removeChild(imposterContainer);
- }
- return null;
- }
-}
-
-function docSentenceExtract(source, extent, layoutAwareScan) {
- const quotesFwd = {'「': '」', '『': '』', "'": "'", '"': '"'};
- const quotesBwd = {'」': '「', '』': '『', "'": "'", '"': '"'};
- const terminators = '…。．.？?！!';
-
- const sourceLocal = source.clone();
- const position = sourceLocal.setStartOffset(extent, layoutAwareScan);
- sourceLocal.setEndOffset(extent * 2 - position, layoutAwareScan, true);
- const content = sourceLocal.text();
-
- let quoteStack = [];
-
- let startPos = 0;
- for (let i = position; i >= startPos; --i) {
- const c = content[i];
-
- if (c === '\n') {
- startPos = i + 1;
- break;
- }
-
- if (quoteStack.length === 0 && (terminators.includes(c) || c in quotesFwd)) {
- startPos = i + 1;
- break;
- }
-
- if (quoteStack.length > 0 && c === quoteStack[0]) {
- quoteStack.pop();
- } else if (c in quotesBwd) {
- quoteStack.unshift(quotesBwd[c]);
- }
- }
-
- quoteStack = [];
-
- let endPos = content.length;
- for (let i = position; i <= endPos; ++i) {
- const c = content[i];
-
- if (c === '\n') {
- endPos = i + 1;
- break;
- }
-
- if (quoteStack.length === 0) {
- if (terminators.includes(c)) {
- endPos = i + 1;
- break;
- } else if (c in quotesBwd) {
- endPos = i;
- break;
- }
- }
-
- if (quoteStack.length > 0 && c === quoteStack[0]) {
- quoteStack.pop();
- } else if (c in quotesFwd) {
- quoteStack.unshift(quotesFwd[c]);
- }
- }
-
- const text = content.substring(startPos, endPos);
- const padding = text.length - text.replace(/^\s+/, '').length;
-
- return {
- text: text.trim(),
- offset: position - startPos - padding
- };
-}
-
-function isPointInRange(x, y, range) {
- // Require a text node to start
- if (range.startContainer.nodeType !== Node.TEXT_NODE) {
- return false;
- }
-
- // Scan forward
- const nodePre = range.endContainer;
- const offsetPre = range.endOffset;
- try {
- const {node, offset, content} = new DOMTextScanner(range.endContainer, range.endOffset, true, false).seek(1);
- range.setEnd(node, offset);
-
- if (!isWhitespace(content) && DOM.isPointInAnyRect(x, y, range.getClientRects())) {
- return true;
- }
- } finally {
- range.setEnd(nodePre, offsetPre);
- }
-
- // Scan backward
- const {node, offset, content} = new DOMTextScanner(range.startContainer, range.startOffset, true, false).seek(-1);
- range.setStart(node, offset);
-
- if (!isWhitespace(content) && DOM.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;
- }
-
- // No match
- return false;
-}
-
-function isWhitespace(string) {
- return string.trim().length === 0;
-}
-
-const caretRangeFromPoint = (() => {
- if (typeof document.caretRangeFromPoint === 'function') {
- // Chrome, Edge
- return (x, y) => document.caretRangeFromPoint(x, y);
- }
-
- if (typeof document.caretPositionFromPoint === 'function') {
- // Firefox
- return (x, y) => {
- const position = document.caretPositionFromPoint(x, y);
- if (position === null) {
- return null;
- }
- const node = position.offsetNode;
- if (node === null) {
- return null;
- }
-
- const range = document.createRange();
- const offset = (node.nodeType === Node.TEXT_NODE ? position.offset : 0);
- try {
- range.setStart(node, offset);
- range.setEnd(node, offset);
- } catch (e) {
- // Firefox throws new DOMException("The operation is insecure.")
- // when trying to select a node from within a ShadowRoot.
- return null;
- }
- return range;
- };
- }
-
- // No support
- return () => null;
-})();
-
-function caretRangeFromPointExt(x, y, elements) {
- const modifications = [];
- try {
- let i = 0;
- let startContinerPre = null;
- while (true) {
- const range = caretRangeFromPoint(x, y);
- if (range === null) {
- return null;
- }
-
- const startContainer = range.startContainer;
- if (startContinerPre !== startContainer) {
- if (isPointInRange(x, y, range)) {
- return range;
- }
- startContinerPre = startContainer;
- }
-
- i = disableTransparentElement(elements, i, modifications);
- if (i < 0) {
- return null;
- }
- }
- } finally {
- if (modifications.length > 0) {
- restoreElementStyleModifications(modifications);
- }
- }
-}
-
-function disableTransparentElement(elements, i, modifications) {
- while (true) {
- if (i >= elements.length) {
- return -1;
- }
-
- const element = elements[i++];
- if (isElementTransparent(element)) {
- const style = element.hasAttribute('style') ? element.getAttribute('style') : null;
- modifications.push({element, style});
- element.style.setProperty('pointer-events', 'none', 'important');
- return i;
- }
- }
-}
-
-function restoreElementStyleModifications(modifications) {
- for (const {element, style} of modifications) {
- if (style === null) {
- element.removeAttribute('style');
- } else {
- element.setAttribute('style', style);
- }
- }
-}
-
-function isElementTransparent(element) {
- if (
- element === document.body ||
- element === document.documentElement
- ) {
- return false;
- }
- const style = window.getComputedStyle(element);
- return (
- parseFloat(style.opacity) <= 0 ||
- style.visibility === 'hidden' ||
- (style.backgroundImage === 'none' && isColorTransparent(style.backgroundColor))
- );
-}
-
-function isColorTransparent(cssColor) {
- return REGEX_TRANSPARENT_COLOR.test(cssColor);
-}
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index 1214e74b..ccffbab6 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -17,12 +17,12 @@
/* global
* DOM
+ * DocumentUtil
* FrameOffsetForwarder
* PopupProxy
* TextScanner
* TextSourceElement
* api
- * docSentenceExtract
*/
class Frontend {
@@ -36,11 +36,13 @@ class Frontend {
this._lastShowPromise = Promise.resolve();
this._activeModifiers = new Set();
this._optionsUpdatePending = false;
+ this._documentUtil = new DocumentUtil();
this._textScanner = new TextScanner({
node: window,
ignoreElements: this._ignoreElements.bind(this),
ignorePoint: this._ignorePoint.bind(this),
- search: this._search.bind(this)
+ search: this._search.bind(this),
+ documentUtil: this._documentUtil
});
const {
@@ -432,7 +434,7 @@ class Frontend {
const {url} = optionsContext;
const sentenceExtent = this._options.anki.sentenceExt;
const layoutAwareScan = this._options.scanning.layoutAwareScan;
- const sentence = docSentenceExtract(textSource, sentenceExtent, layoutAwareScan);
+ const sentence = this._documentUtil.extractSentence(textSource, sentenceExtent, layoutAwareScan);
const query = textSource.text();
const details = {
focus,