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unify heights stored by id and index, to avoid them getting out of sync

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effectively get rid of _originalHeights and calculate the array
from the dictionary when needed
This commit is contained in:
Bruno Windels 2019-01-28 14:52:40 +01:00
parent 0a5e8e6cfe
commit bfb1031a6b
1 changed files with 16 additions and 22 deletions
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38
src/resizer/distributors/roomsublist2.js
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@ -36,10 +36,9 @@ export class Layout {
this._sections = [];
this._collapsedState = Object.assign({}, collapsedState);
this._availableHeight = 0;
// need to store heights by id so it doesn't get
// assigned to wrong section when a section gets added?
// heights stored by section section id
this._sectionHeights = Object.assign({}, initialSizes);
this._originalHeights = [];
// in-progress heights, while dragging. Committed on mouse-up.
this._heights = [];
}
@ -67,13 +66,13 @@ export class Layout {
}
const totalHeight = this._getAvailableHeight();
this._sections.forEach((section, i) => {
this._originalHeights[i] =
this._sectionHeights[section.id] ||
clamp(
if (!this._sectionHeights.hasOwnProperty(section.id)) {
this._sectionHeights[section.id] = clamp(
totalHeight / this._sections.length,
this._getMinHeight(i),
this._getMaxHeight(i),
);
};
});
this._sections = sections;
this._applyNewSize();
@ -82,7 +81,7 @@ export class Layout {
openHandle(id) {
const index = this._getSectionIndex(id);
//log(`openHandle resolved ${id} to ${index}`);
return new Handle(this, index, this._originalHeights[index]);
return new Handle(this, index, this._sectionHeights[id]);
}
_getAvailableHeight() {
@ -95,20 +94,15 @@ export class Layout {
_applyNewSize() {
const newHeight = this._getAvailableHeight();
let currHeight = 0;
const sections = [];
for (let i = 0; i < this._sections.length; i++) {
currHeight += this._originalHeights[i];
sections.push(i);
}
const currHeight = this._sections.reduce((sum, section) => {
return sum + this._sectionHeights[section.id];
}, 0);
const offset = newHeight - currHeight;
this._heights = this._originalHeights.slice(0);
this._heights = this._sections.map((section) => this._sectionHeights[section.id]);
const sections = this._sections.map((_, i) => i);
this._applyOverflow(-offset, sections, true);
this._applyHeights();
this._commitHeights();
this._sections.forEach((section, i) => {
this._sectionHeights[section.id] = this._originalHeights[i];
});
}
_getSectionIndex(id) {
@ -202,10 +196,10 @@ export class Layout {
return overflowBelow;
}
// @param offset the amount the anchor is moved from what is stored in _originalHeights, positive if downwards
// @param offset the amount the anchor is moved from what is stored in _sectionHeights, positive if downwards
// if we're clamped, return the offset we should be clamped at.
_relayout(anchor = 0, offset = 0, clamped = false) {
this._heights = this._originalHeights.slice(0);
this._heights = this._sections.map((section) => this._sectionHeights[section.id]);
// are these the amounts the items above/below shrank/grew and need to be relayouted?
let overflowAbove;
let overflowBelow;
@ -267,9 +261,9 @@ export class Layout {
}
_commitHeights() {
const heights = this._heights.slice(0);
log("committing heights:", heights);
this._originalHeights = heights;
this._sections.forEach((section, i) => {
this._sectionHeights[section.id] = this._heights[i];
});
}
}