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authortoasted-nutbread <toasted-nutbread@users.noreply.github.com>2020-05-06 19:33:17 -0400
committerGitHub <noreply@github.com>2020-05-06 19:33:17 -0400
commitf7df6254d6f71d5331b000dcbd27271bd2c3006f (patch)
tree99ec2aa66349ba07d4379f31ee3be762235249dd /ext/fg/js
parentbb2d9501afc0e406b0dacf5675cd90985238be98 (diff)
Dom text scanner fixes (#505)
* Fix test case * Add test-dom-text-scanner * Ensure that DOMTextScanner._node never becomes null * Add remainder
Diffstat (limited to 'ext/fg/js')
-rw-r--r--ext/fg/js/dom-text-scanner.js15
1 files changed, 14 insertions, 1 deletions
diff --git a/ext/fg/js/dom-text-scanner.js b/ext/fg/js/dom-text-scanner.js
index 2de65041..8fa67ede 100644
--- a/ext/fg/js/dom-text-scanner.js
+++ b/ext/fg/js/dom-text-scanner.js
@@ -60,6 +60,15 @@ class DOMTextScanner {
}
/**
+ * Gets the remaining number of characters that weren't scanned in the last seek() call.
+ * This value is usually 0 unless the end of the document was reached.
+ * @returns An integer.
+ */
+ get remainder() {
+ return this._remainder;
+ }
+
+ /**
* Gets the accumulated content string resulting from calls to seek().
* @returns A string.
*/
@@ -85,6 +94,7 @@ class DOMTextScanner {
const generateLayoutContent = this._generateLayoutContent;
let node = this._node;
+ let lastNode = node;
let resetOffset = this._resetOffset;
let newlines = 0;
while (node !== null) {
@@ -92,6 +102,7 @@ class DOMTextScanner {
const nodeType = node.nodeType;
if (nodeType === TEXT_NODE) {
+ lastNode = node;
if (!(
forward ?
this._seekTextNodeForward(node, resetOffset) :
@@ -101,6 +112,8 @@ class DOMTextScanner {
break;
}
} else if (nodeType === ELEMENT_NODE) {
+ lastNode = node;
+ this._offset = 0;
[enterable, newlines] = DOMTextScanner.getElementSeekInfo(node);
if (newlines > this._newlines && generateLayoutContent) {
this._newlines = newlines;
@@ -121,7 +134,7 @@ class DOMTextScanner {
resetOffset = true;
}
- this._node = node;
+ this._node = lastNode;
this._resetOffset = resetOffset;
return this;