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authortoasted-nutbread <toasted-nutbread@users.noreply.github.com>2020-07-26 18:49:38 -0400
committerGitHub <noreply@github.com>2020-07-26 18:49:38 -0400
commit0512258c8e77f4ee63a7f7d100e8bb7c898fc343 (patch)
treef666efb91f7df66db06248185a54b59925fd4b7c /ext/mixed/js
parent104650627d0dea207b5803f89d648a4363d6af8d (diff)
Display scroll refactor (#694)
* Cache navigation header * Create _focusEntry * Update scroll restoration * Require explicit entry focus index
Diffstat (limited to 'ext/mixed/js')
-rw-r--r--ext/mixed/js/display.js72
1 files changed, 36 insertions, 36 deletions
diff --git a/ext/mixed/js/display.js b/ext/mixed/js/display.js
index e78b9765..017f6b60 100644
--- a/ext/mixed/js/display.js
+++ b/ext/mixed/js/display.js
@@ -67,15 +67,16 @@ class Display extends EventDispatcher {
this._history = new DisplayHistory({clearable: true, useBrowserHistory: false});
this._historyChangeIgnore = false;
this._historyHasChanged = false;
+ this._navigationHeader = document.querySelector('#navigation-header');
this.registerActions([
['close', () => { this.onEscape(); }],
- ['next-entry', () => { this._entryScrollIntoView(this._index + 1, null, true); }],
- ['next-entry-x3', () => { this._entryScrollIntoView(this._index + 3, null, true); }],
- ['previous-entry', () => { this._entryScrollIntoView(this._index - 1, null, true); }],
- ['previous-entry-x3', () => { this._entryScrollIntoView(this._index - 3, null, true); }],
- ['last-entry', () => { this._entryScrollIntoView(this._definitions.length - 1, null, true); }],
- ['first-entry', () => { this._entryScrollIntoView(0, null, true); }],
+ ['next-entry', () => { this._focusEntry(this._index + 1, true); }],
+ ['next-entry-x3', () => { this._focusEntry(this._index + 3, true); }],
+ ['previous-entry', () => { this._focusEntry(this._index - 1, true); }],
+ ['previous-entry-x3', () => { this._focusEntry(this._index - 3, true); }],
+ ['last-entry', () => { this._focusEntry(this._definitions.length - 1, true); }],
+ ['first-entry', () => { this._focusEntry(0, true); }],
['history-backward', () => { this._sourceTermView(); }],
['history-forward', () => { this._nextTermView(); }],
['add-note-kanji', () => { this._noteTryAdd('kanji'); }],
@@ -454,8 +455,9 @@ class Display extends EventDispatcher {
const link = e.target;
const {state} = this._history;
- state.index = this._entryIndexFind(link);
- state.scroll = this._windowScroll.y;
+ state.focusEntry = this._entryIndexFind(link);
+ state.scrollX = this._windowScroll.x;
+ state.scrollY = this._windowScroll.y;
this._historyStateUpdate(state);
const query = link.textContent;
@@ -469,6 +471,7 @@ class Display extends EventDispatcher {
wildcards: 'off'
},
state: {
+ focusEntry: 0,
sentence: state.sentence,
url: state.url
},
@@ -512,8 +515,9 @@ class Display extends EventDispatcher {
const layoutAwareScan = this._options.scanning.layoutAwareScan;
const sentence = docSentenceExtract(textSource, sentenceExtent, layoutAwareScan);
- state.index = this._entryIndexFind(scannedElement);
- state.scroll = this._windowScroll.y;
+ state.focusEntry = this._entryIndexFind(scannedElement);
+ state.scrollX = this._windowScroll.x;
+ state.scrollY = this._windowScroll.y;
this._historyStateUpdate(state);
this.setContent({
@@ -525,6 +529,7 @@ class Display extends EventDispatcher {
wildcards: 'off'
},
state: {
+ focusEntry: 0,
sentence,
url: state.url
},
@@ -601,7 +606,7 @@ class Display extends EventDispatcher {
_onWheel(e) {
if (e.altKey) {
if (e.deltaY !== 0) {
- this._entryScrollIntoView(this._index + (e.deltaY > 0 ? 1 : -1), null, true);
+ this._focusEntry(this._index + (e.deltaY > 0 ? 1 : -1), true);
e.preventDefault();
}
} else if (e.shiftKey) {
@@ -647,7 +652,6 @@ class Display extends EventDispatcher {
if (interactive) {
const actionPrevious = document.querySelector('.action-previous');
const actionNext = document.querySelector('.action-next');
- // const navigationHeader = document.querySelector('.navigation-header');
this._persistentEventListeners.addEventListener(document, 'keydown', this.onKeyDown.bind(this), false);
this._persistentEventListeners.addEventListener(document, 'wheel', this._onWheel.bind(this), {passive: false});
@@ -657,10 +661,6 @@ class Display extends EventDispatcher {
if (actionNext !== null) {
this._persistentEventListeners.addEventListener(actionNext, 'click', this._onNextTermView.bind(this));
}
- // temporarily disabled
- // if (navigationHeader !== null) {
- // this.persistentEventListeners.addEventListener(navigationHeader, 'wheel', this.onHistoryWheel.bind(this), {passive: false});
- // }
} else {
this._persistentEventListeners.removeAllEventListeners();
}
@@ -711,7 +711,7 @@ class Display extends EventDispatcher {
}
}
- async _setContentTermsOrKanji(token, isTerms, definitions, {sentence=null, url=null, index=0, scroll=null}) {
+ async _setContentTermsOrKanji(token, isTerms, definitions, {sentence=null, url=null, focusEntry=null, scrollX=null, scrollY=null}) {
if (typeof url !== 'string') { url = window.location.href; }
sentence = this._getValidSentenceData(sentence);
@@ -744,7 +744,16 @@ class Display extends EventDispatcher {
container.appendChild(entry);
}
- this._entryScrollIntoView(index, scroll);
+ if (typeof focusEntry === 'number') {
+ this._focusEntry(focusEntry, false);
+ }
+ if (typeof scrollX === 'number' || typeof scrollY === 'number') {
+ let {x, y} = this._windowScroll;
+ if (typeof scrollX === 'number') { x = scrollX; }
+ if (typeof scrollY === 'number') { y = scrollY; }
+ this._windowScroll.stop();
+ this._windowScroll.to(x, y);
+ }
if (
isTerms &&
@@ -792,12 +801,10 @@ class Display extends EventDispatcher {
}
_updateNavigation(previous, next) {
- const navigation = document.querySelector('#navigation-header');
- if (navigation !== null) {
- navigation.hidden = !(previous || next);
- navigation.dataset.hasPrevious = `${!!previous}`;
- navigation.dataset.hasNext = `${!!next}`;
- }
+ if (this._navigationHeader === null) { return; }
+ this._navigationHeader.hidden = !(previous || next);
+ this._navigationHeader.dataset.hasPrevious = `${!!previous}`;
+ this._navigationHeader.dataset.hasNext = `${!!next}`;
}
_updateAdderButtons(states) {
@@ -840,22 +847,15 @@ class Display extends EventDispatcher {
return entry;
}
- _entryScrollIntoView(index, scroll, smooth) {
- this._windowScroll.stop();
-
+ _focusEntry(index, smooth) {
const entry = this._entrySetCurrent(index);
- let target;
- if (typeof scroll === 'number') {
- target = scroll;
- } else {
- target = this._index === 0 || entry === null ? 0 : this._getElementTop(entry);
+ let target = index === 0 || entry === null ? 0 : this._getElementTop(entry);
- const header = document.querySelector('#navigation-header');
- if (header !== null) {
- target -= header.getBoundingClientRect().height;
- }
+ if (this._navigationHeader !== null) {
+ target -= this._navigationHeader.getBoundingClientRect().height;
}
+ this._windowScroll.stop();
if (smooth) {
this._windowScroll.animate(this._windowScroll.x, target, 200);
} else {