From 0512258c8e77f4ee63a7f7d100e8bb7c898fc343 Mon Sep 17 00:00:00 2001 From: toasted-nutbread Date: Sun, 26 Jul 2020 18:49:38 -0400 Subject: Display scroll refactor (#694) * Cache navigation header * Create _focusEntry * Update scroll restoration * Require explicit entry focus index --- ext/mixed/js/display.js | 72 ++++++++++++++++++++++++------------------------- 1 file changed, 36 insertions(+), 36 deletions(-) (limited to 'ext/mixed/js') 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 { -- cgit v1.2.3