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take non-editable parts into account for new caret position

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Bruno Windels 2019-05-09 19:55:24 +02:00
parent 8d97c0033e
commit 1a577eed11
1 changed files with 27 additions and 12 deletions
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39
src/editor/model.js
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@ -81,15 +81,16 @@ export default class EditorModel {
const diff = this._diff(newValue, inputType, caret);
const position = this._positionForOffset(diff.at, caret.atNodeEnd);
console.log("update at", {position, diff, newValue, prevValue: this.parts.reduce((text, p) => text + p.text, "")});
let removedOffsetDecrease = 0;
if (diff.removed) {
this._removeText(position, diff.removed.length);
removedOffsetDecrease = this._removeText(position, diff.removed.length);
}
let addedLen = 0;
if (diff.added) {
this._addText(position, diff.added);
addedLen = this._addText(position, diff.added);
}
this._mergeAdjacentParts();
// TODO: now that parts can be outright deleted, this doesn't make sense anymore
const caretOffset = diff.at + (diff.added ? diff.added.length : 0);
const caretOffset = diff.at - removedOffsetDecrease + addedLen;
const newPosition = this._positionForOffset(caretOffset, true);
this._setActivePart(newPosition);
this._updateCallback(newPosition);
@ -157,13 +158,19 @@ export default class EditorModel {
}
}
/**
* removes `len` amount of characters at `pos`.
* @return {Number} how many characters before pos were also removed,
* usually because of non-editable parts that can only be removed in their entirety.
*/
_removeText(pos, len) {
let {index, offset} = pos;
let removedOffsetDecrease = 0;
while (len > 0) {
// part might be undefined here
let part = this._parts[index];
const amount = Math.min(len, part.text.length - offset);
if (part.canEdit) {
const amount = Math.min(len, part.text.length - offset);
const replaceWith = part.remove(offset, amount);
if (typeof replaceWith === "string") {
this._replacePart(index, this._partCreator.createDefaultPart(replaceWith));
@ -175,31 +182,38 @@ export default class EditorModel {
} else {
index += 1;
}
len -= amount;
offset = 0;
} else {
len = part.length - (offset + len);
removedOffsetDecrease += offset;
this._removePart(index);
}
len -= amount;
offset = 0;
}
return removedOffsetDecrease;
}
/**
* inserts `str` into the model at `pos`.
* @return {Number} how far from position (in characters) the insertion ended.
* This can be more than the length of `str` when crossing non-editable parts, which are skipped.
*/
_addText(pos, str, actions) {
let {index, offset} = pos;
let {index} = pos;
const {offset} = pos;
let addLen = str.length;
const part = this._parts[index];
if (part) {
if (part.canEdit) {
if (part.insertAll(offset, str)) {
str = null;
} else {
// console.log("splitting", offset, [part.text]);
const splitPart = part.split(offset);
// console.log("splitted", [part.text, splitPart.text]);
index += 1;
this._insertPart(index, splitPart);
}
} else {
// insert str after this part
// not-editable, insert str after this part
addLen += part.text.length - offset;
index += 1;
}
}
@ -209,6 +223,7 @@ export default class EditorModel {
this._insertPart(index, newPart);
index += 1;
}
return addLen;
}
_positionForOffset(totalOffset, atPartEnd) {