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Conceptual MenuItem caching - WIP for testing, will impl. in others if it seems good

This commit is contained in:
Bryan Ashby 2018-02-01 20:29:26 -07:00
parent a121d60c1b
commit 548ff41467
2 changed files with 21 additions and 3 deletions
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13
core/menu_view.js
View File

@ -29,6 +29,8 @@ function MenuView(options) {
this.items = []; this.items = [];
} }
this.renderCache = {};
this.caseInsensitiveHotKeys = miscUtil.valueWithDefault(options.caseInsensitiveHotKeys, true); this.caseInsensitiveHotKeys = miscUtil.valueWithDefault(options.caseInsensitiveHotKeys, true);
this.setHotKeys(options.hotKeys); this.setHotKeys(options.hotKeys);
@ -65,6 +67,7 @@ util.inherits(MenuView, View);
MenuView.prototype.setItems = function(items) { MenuView.prototype.setItems = function(items) {
if(Array.isArray(items)) { if(Array.isArray(items)) {
this.sorted = false; this.sorted = false;
this.renderCache = {};
// //
// Items can be an array of strings or an array of objects. // Items can be an array of strings or an array of objects.
@ -98,6 +101,16 @@ MenuView.prototype.setItems = function(items) {
} }
}; };
MenuView.prototype.getRenderCacheItem = function(index, focusItem = false) {
const item = this.renderCache[index];
return item && item[focusItem ? 'focus' : 'standard'];
};
MenuView.prototype.setRenderCacheItem = function(index, rendered, focusItem = false) {
this.renderCache[index] = this.renderCache[index] || {};
this.renderCache[index][focusItem ? 'focus' : 'standard'] = rendered;
};
MenuView.prototype.setSort = function(sort) { MenuView.prototype.setSort = function(sort) {
if(this.sorted || !Array.isArray(this.items) || 0 === this.items.length) { if(this.sorted || !Array.isArray(this.items) || 0 === this.items.length) {
return; return;

11
core/vertical_menu_view.js
View File

@ -64,6 +64,11 @@ function VerticalMenuView(options) {
return; return;
} }
const cached = this.getRenderCacheItem(index, item.focused);
if(cached) {
return self.client.term.write(`${ansi.goto(item.row, self.position.col)}${cached}`);
}
let text; let text;
let sgr; let sgr;
if(item.focused && self.hasFocusItems()) { if(item.focused && self.hasFocusItems()) {
@ -78,9 +83,9 @@ function VerticalMenuView(options) {
sgr = (index === self.focusedItemIndex ? self.getFocusSGR() : self.getSGR()); sgr = (index === self.focusedItemIndex ? self.getFocusSGR() : self.getSGR());
} }
self.client.term.write( text = `${sgr}${strUtil.pad(text, this.dimens.width, this.fillChar, this.justify)}`;
`${ansi.goto(item.row, self.position.col)}${sgr}${strUtil.pad(text, this.dimens.width, this.fillChar, this.justify)}` self.client.term.write(`${ansi.goto(item.row, self.position.col)}${text}`);
); this.setRenderCacheItem(index, text, item.focused);
}; };
} }