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Adding sentence extraction code

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This commit is contained in:
Alex Yatskov 2016-07-24 21:22:03 -07:00
parent 19cc8fda33
commit d26ecab0b5
1 changed files with 72 additions and 22 deletions
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94
ext/fg/js/client.js
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@ -78,29 +78,8 @@ class Client {
}
}
textSourceFromPoint(point) {
const element = document.elementFromPoint(point.x, point.y);
if (element !== null) {
switch (element.nodeName) {
case 'IMG':
return new TextSourceImage(element);
case 'INPUT':
case 'BUTTON':
case 'TEXTAREA':
return new TextSourceInput(element);
}
}
const range = document.caretRangeFromPoint(point.x, point.y);
if (range !== null) {
return new TextSourceRange(range);
}
return null;
}
searchAt(point) {
const textSource = this.textSourceFromPoint(point);
const textSource = Client.textSourceFromPoint(point);
if (textSource === null || !textSource.containsPoint(point)) {
this.hidePopup();
return;
@ -218,6 +197,77 @@ class Client {
);
});
}
static textSourceFromPoint(point) {
const element = document.elementFromPoint(point.x, point.y);
if (element !== null) {
switch (element.nodeName) {
case 'IMG':
return new TextSourceImage(element);
case 'INPUT':
case 'BUTTON':
case 'TEXTAREA':
return new TextSourceInput(element);
}
}
const range = document.caretRangeFromPoint(point.x, point.y);
if (range !== null) {
return new TextSourceRange(range);
}
return null;
}
static extractSentence(content, position) {
const quotesFwd = {'「': '」', '『': '』', "'": "'", '"': '"'};
const quotesBwd = {'」': '「', '』': '『', "'": "'", '"': '"'};
const terminators = '…。．.？?！!';
let quoteStack = [];
let startPos = 0;
for (let i = position; i >= startPos; --i) {
const c = content[i];
if (quoteStack.length === 0 && (terminators.indexOf(c) !== -1 || c in quotesFwd)) {
startPos = i + 1;
break;
}
if (quoteStack.length > 0 && c === quoteStack[0]) {
quoteStack.pop();
} else if (c in quotesBwd) {
quoteStack = [quotesBwd[c]].concat(quoteStack);
}
}
quoteStack = [];
let endPos = content.length;
for (let i = position; i < endPos; ++i) {
const c = content[i];
if (quoteStack.length === 0) {
if (terminators.indexOf(c) !== -1) {
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 = [quotesFwd[c]].concat(quoteStack);
}
}
return content.substring(startPos, endPos).trim();
}
}
window.yomiClient = new Client();