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-rw-r--r--ext/fg/float.html1
-rw-r--r--ext/fg/js/document.js11
-rw-r--r--ext/fg/js/frontend.js14
-rw-r--r--ext/fg/js/source.js224
4 files changed, 24 insertions, 226 deletions
diff --git a/ext/fg/float.html b/ext/fg/float.html
index 17dbcc6d..3e41cde5 100644
--- a/ext/fg/float.html
+++ b/ext/fg/float.html
@@ -46,6 +46,7 @@
<script src="/mixed/js/japanese.js"></script>
<script src="/fg/js/document.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>
<script src="/mixed/js/display-context.js"></script>
diff --git a/ext/fg/js/document.js b/ext/fg/js/document.js
index d639bc86..c288502c 100644
--- a/ext/fg/js/document.js
+++ b/ext/fg/js/document.js
@@ -17,6 +17,7 @@
/* global
* DOM
+ * DOMTextScanner
* TextSourceElement
* TextSourceRange
*/
@@ -152,14 +153,14 @@ function docRangeFromPoint(x, y, deepDomScan) {
}
}
-function docSentenceExtract(source, extent) {
+function docSentenceExtract(source, extent, layoutAwareScan) {
const quotesFwd = {'「': '」', '『': '』', "'": "'", '"': '"'};
const quotesBwd = {'」': '「', '』': '『', "'": "'", '"': '"'};
const terminators = '…。．.？?！!';
const sourceLocal = source.clone();
- const position = sourceLocal.setStartOffset(extent);
- sourceLocal.setEndOffset(extent * 2 - position, true);
+ const position = sourceLocal.setStartOffset(extent, layoutAwareScan);
+ sourceLocal.setEndOffset(extent * 2 - position, layoutAwareScan, true);
const content = sourceLocal.text();
let quoteStack = [];
@@ -232,7 +233,7 @@ function isPointInRange(x, y, range) {
const nodePre = range.endContainer;
const offsetPre = range.endOffset;
try {
- const {node, offset, content} = TextSourceRange.seekForward(range.endContainer, range.endOffset, 1);
+ 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())) {
@@ -243,7 +244,7 @@ function isPointInRange(x, y, range) {
}
// Scan backward
- const {node, offset, content} = TextSourceRange.seekBackward(range.startContainer, range.startOffset, 1);
+ 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())) {
diff --git a/ext/fg/js/frontend.js b/ext/fg/js/frontend.js
index 70bd8a48..ab455c09 100644
--- a/ext/fg/js/frontend.js
+++ b/ext/fg/js/frontend.js
@@ -258,32 +258,36 @@ class Frontend {
}
async _findTerms(textSource, optionsContext) {
- const searchText = this._textScanner.getTextSourceContent(textSource, this._options.scanning.length);
+ const {length: scanLength, layoutAwareScan} = this._options.scanning;
+ const searchText = this._textScanner.getTextSourceContent(textSource, scanLength, layoutAwareScan);
if (searchText.length === 0) { return null; }
const {definitions, length} = await api.termsFind(searchText, {}, optionsContext);
if (definitions.length === 0) { return null; }
- textSource.setEndOffset(length);
+ textSource.setEndOffset(length, layoutAwareScan);
return {definitions, type: 'terms'};
}
async _findKanji(textSource, optionsContext) {
- const searchText = this._textScanner.getTextSourceContent(textSource, 1);
+ const layoutAwareScan = this._options.scanning.layoutAwareScan;
+ const searchText = this._textScanner.getTextSourceContent(textSource, 1, layoutAwareScan);
if (searchText.length === 0) { return null; }
const definitions = await api.kanjiFind(searchText, optionsContext);
if (definitions.length === 0) { return null; }
- textSource.setEndOffset(1);
+ textSource.setEndOffset(1, layoutAwareScan);
return {definitions, type: 'kanji'};
}
_showContent(textSource, focus, definitions, type, optionsContext) {
const {url} = optionsContext;
- const sentence = docSentenceExtract(textSource, this._options.anki.sentenceExt);
+ const sentenceExtent = this._options.anki.sentenceExt;
+ const layoutAwareScan = this._options.scanning.layoutAwareScan;
+ const sentence = docSentenceExtract(textSource, sentenceExtent, layoutAwareScan);
this._showPopupContent(
textSource,
optionsContext,
diff --git a/ext/fg/js/source.js b/ext/fg/js/source.js
index fa4706f2..38810f07 100644
--- a/ext/fg/js/source.js
+++ b/ext/fg/js/source.js
@@ -15,9 +15,9 @@
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
-// \u200c (Zero-width non-joiner) appears on Google Docs from Chrome 76 onwards
-const IGNORE_TEXT_PATTERN = /\u200c/;
-
+/* global
+ * DOMTextScanner
+ */
/*
* TextSourceRange
@@ -46,19 +46,19 @@ class TextSourceRange {
return this.content;
}
- setEndOffset(length, fromEnd=false) {
+ setEndOffset(length, layoutAwareScan, fromEnd=false) {
const state = (
fromEnd ?
- TextSourceRange.seekForward(this.range.endContainer, this.range.endOffset, length) :
- TextSourceRange.seekForward(this.range.startContainer, this.range.startOffset, length)
+ new DOMTextScanner(this.range.endContainer, this.range.endOffset, !layoutAwareScan, layoutAwareScan).seek(length) :
+ new DOMTextScanner(this.range.startContainer, this.range.startOffset, !layoutAwareScan, layoutAwareScan).seek(length)
);
this.range.setEnd(state.node, state.offset);
this.content = (fromEnd ? this.content + state.content : state.content);
return length - state.remainder;
}
- setStartOffset(length) {
- const state = TextSourceRange.seekBackward(this.range.startContainer, this.range.startOffset, length);
+ setStartOffset(length, layoutAwareScan) {
+ const state = new DOMTextScanner(this.range.startContainer, this.range.startOffset, !layoutAwareScan, layoutAwareScan).seek(-length);
this.range.setStart(state.node, state.offset);
this.rangeStartOffset = this.range.startOffset;
this.content = state.content + this.content;
@@ -110,154 +110,6 @@ class TextSourceRange {
}
}
- static shouldEnter(node) {
- switch (node.nodeName.toUpperCase()) {
- case 'RT':
- case 'SCRIPT':
- case 'STYLE':
- return false;
- }
-
- const style = window.getComputedStyle(node);
- return !(
- style.visibility === 'hidden' ||
- style.display === 'none' ||
- parseFloat(style.fontSize) === 0
- );
- }
-
- static getRubyElement(node) {
- node = TextSourceRange.getParentElement(node);
- if (node !== null && node.nodeName.toUpperCase() === 'RT') {
- node = node.parentNode;
- return (node !== null && node.nodeName.toUpperCase() === 'RUBY') ? node : null;
- }
- return null;
- }
-
- static seekForward(node, offset, length) {
- const state = {node, offset, remainder: length, content: ''};
- if (length <= 0) {
- return state;
- }
-
- const TEXT_NODE = Node.TEXT_NODE;
- const ELEMENT_NODE = Node.ELEMENT_NODE;
- let resetOffset = false;
-
- const ruby = TextSourceRange.getRubyElement(node);
- if (ruby !== null) {
- node = ruby;
- resetOffset = true;
- }
-
- while (node !== null) {
- let visitChildren = true;
- const nodeType = node.nodeType;
-
- if (nodeType === TEXT_NODE) {
- state.node = node;
- if (TextSourceRange.seekForwardTextNode(state, resetOffset)) {
- break;
- }
- resetOffset = true;
- } else if (nodeType === ELEMENT_NODE) {
- visitChildren = TextSourceRange.shouldEnter(node);
- }
-
- node = TextSourceRange.getNextNode(node, visitChildren);
- }
-
- return state;
- }
-
- static seekForwardTextNode(state, resetOffset) {
- const nodeValue = state.node.nodeValue;
- const nodeValueLength = nodeValue.length;
- let content = state.content;
- let offset = resetOffset ? 0 : state.offset;
- let remainder = state.remainder;
- let result = false;
-
- for (; offset < nodeValueLength; ++offset) {
- const c = nodeValue[offset];
- if (!IGNORE_TEXT_PATTERN.test(c)) {
- content += c;
- if (--remainder <= 0) {
- result = true;
- ++offset;
- break;
- }
- }
- }
-
- state.offset = offset;
- state.content = content;
- state.remainder = remainder;
- return result;
- }
-
- static seekBackward(node, offset, length) {
- const state = {node, offset, remainder: length, content: ''};
- if (length <= 0) {
- return state;
- }
-
- const TEXT_NODE = Node.TEXT_NODE;
- const ELEMENT_NODE = Node.ELEMENT_NODE;
- let resetOffset = false;
-
- const ruby = TextSourceRange.getRubyElement(node);
- if (ruby !== null) {
- node = ruby;
- resetOffset = true;
- }
-
- while (node !== null) {
- let visitChildren = true;
- const nodeType = node.nodeType;
-
- if (nodeType === TEXT_NODE) {
- state.node = node;
- if (TextSourceRange.seekBackwardTextNode(state, resetOffset)) {
- break;
- }
- resetOffset = true;
- } else if (nodeType === ELEMENT_NODE) {
- visitChildren = TextSourceRange.shouldEnter(node);
- }
-
- node = TextSourceRange.getPreviousNode(node, visitChildren);
- }
-
- return state;
- }
-
- static seekBackwardTextNode(state, resetOffset) {
- const nodeValue = state.node.nodeValue;
- let content = state.content;
- let offset = resetOffset ? nodeValue.length : state.offset;
- let remainder = state.remainder;
- let result = false;
-
- for (; offset > 0; --offset) {
- const c = nodeValue[offset - 1];
- if (!IGNORE_TEXT_PATTERN.test(c)) {
- content = c + content;
- if (--remainder <= 0) {
- result = true;
- --offset;
- break;
- }
- }
- }
-
- state.offset = offset;
- state.content = content;
- state.remainder = remainder;
- return result;
- }
-
static getParentElement(node) {
while (node !== null && node.nodeType !== Node.ELEMENT_NODE) {
node = node.parentNode;
@@ -290,66 +142,6 @@ class TextSourceRange {
return writingMode;
}
}
-
- static getNodesInRange(range) {
- const end = range.endContainer;
- const nodes = [];
- for (let node = range.startContainer; node !== null; node = TextSourceRange.getNextNode(node, true)) {
- nodes.push(node);
- if (node === end) { break; }
- }
- return nodes;
- }
-
- static getNextNode(node, visitChildren) {
- let next = visitChildren ? node.firstChild : null;
- if (next === null) {
- while (true) {
- next = node.nextSibling;
- if (next !== null) { break; }
-
- next = node.parentNode;
- if (next === null) { break; }
-
- node = next;
- }
- }
- return next;
- }
-
- static getPreviousNode(node, visitChildren) {
- let next = visitChildren ? node.lastChild : null;
- if (next === null) {
- while (true) {
- next = node.previousSibling;
- if (next !== null) { break; }
-
- next = node.parentNode;
- if (next === null) { break; }
-
- node = next;
- }
- }
- return next;
- }
-
- static anyNodeMatchesSelector(nodeList, selector) {
- for (const node of nodeList) {
- if (TextSourceRange.nodeMatchesSelector(node, selector)) {
- return true;
- }
- }
- return false;
- }
-
- static nodeMatchesSelector(node, selector) {
- for (; node !== null; node = node.parentNode) {
- if (node.nodeType === Node.ELEMENT_NODE) {
- return node.matches(selector);
- }
- }
- return false;
- }
}