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-rw-r--r--ext/fg/js/range.js113
1 files changed, 0 insertions, 113 deletions
diff --git a/ext/fg/js/range.js b/ext/fg/js/range.js
deleted file mode 100644
index c4cabf4b..00000000
--- a/ext/fg/js/range.js
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * Copyright (C) 2016 Alex Yatskov <alex@foosoft.net>
- * Author: Alex Yatskov <alex@foosoft.net>
- *
- * 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 <http://www.gnu.org/licenses/>.
- */
-
-
-class Range {
- constructor(range) {
- this.rng = range;
- }
-
- text() {
- return this.rng.toString();
- }
-
- setLength(length) {
- const end = Range.seekEnd(this.rng.startContainer, this.rng.startOffset + length);
- this.rng.setEnd(end.node, end.offset);
- }
-
- containsPoint(point) {
- const rect = this.getPaddedRect();
- return point.x >= rect.left && point.x <= rect.right;
- }
-
- getRect() {
- return this.rng.getBoundingClientRect();
- }
-
- getPaddedRect() {
- const range = this.rng.cloneRange();
- const startOffset = range.startOffset;
- const endOffset = range.endOffset;
- const node = range.startContainer;
-
- range.setStart(node, Math.max(0, startOffset - 1));
- range.setEnd(node, Math.min(node.length, endOffset + 1));
-
- return range.getBoundingClientRect();
- }
-
- select() {
- const selection = window.getSelection();
- selection.removeAllRanges();
- selection.addRange(this.rng);
- }
-
- deselect() {
- const selection = window.getSelection();
- selection.removeAllRanges();
- }
-
- compareOrigin(range) {
- return range.rng.compareBoundaryPoints(Range.START_TO_START, this.rng);
- }
-
- static seekEnd(node, length) {
- const state = {node, offset: 0, length};
-
- if (!Range.seekEndRecurse(node, state)) {
- return {node: state.node, offset: state.offset};
- }
-
- for (let sibling = node.nextSibling; sibling !== null; sibling = sibling.nextSibling) {
- if (!Range.seekEndRecurse(sibling, state)) {
- return {node: state.node, offset: state.offset};
- }
- }
-
- for (let sibling = node.parentElement.nextSibling; sibling !== null; sibling = sibling.nextSibling) {
- if (!Range.seekEndRecurse(sibling, state)) {
- return {node: state.node, offset: state.offset};
- }
- }
-
- return {node: state.node, offset: state.offset};
- }
-
- static seekEndRecurse(node, state) {
- if (node.nodeType === 3) {
- const consumed = Math.min(node.length, state.length);
- state.node = node;
- state.offset = consumed;
- state.length -= consumed;
- } else {
- for (let i = 0; i < node.childNodes.length; ++i) {
- if (!Range.seekEndRecurse(node.childNodes[i], state)) {
- break;
- }
- }
- }
-
- return state.length > 0;
- }
-
- static fromPoint(point) {
- const range = document.caretRangeFromPoint(point.x, point.y);
- return range === null ? null : new Range(range);
- }
-}