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Refactor the OverlayManager to utilize async methods rather than manually returning Promises

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This commit is contained in:
Jonas Jenwald 2018-07-30 16:39:06 +02:00
parent b0fa02e845
commit 64e70fc16f
1 changed files with 48 additions and 59 deletions
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107
web/overlay_manager.js
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@ -37,22 +37,20 @@ class OverlayManager {
* @returns {Promise} A promise that is resolved when the overlay has been * @returns {Promise} A promise that is resolved when the overlay has been
* registered. * registered.
*/ */
register(name, element, callerCloseMethod = null, canForceClose = false) { async register(name, element, callerCloseMethod = null,
return new Promise((resolve) => { canForceClose = false) {
let container; let container;
if (!name || !element || !(container = element.parentNode)) { if (!name || !element || !(container = element.parentNode)) {
throw new Error('Not enough parameters.'); throw new Error('Not enough parameters.');
} else if (this._overlays[name]) { } else if (this._overlays[name]) {
throw new Error('The overlay is already registered.'); throw new Error('The overlay is already registered.');
} }
this._overlays[name] = { this._overlays[name] = {
element, element,
container, container,
callerCloseMethod, callerCloseMethod,
canForceClose, canForceClose,
}; };
resolve();
});
} }
/** /**
@ -60,16 +58,13 @@ class OverlayManager {
* @returns {Promise} A promise that is resolved when the overlay has been * @returns {Promise} A promise that is resolved when the overlay has been
* unregistered. * unregistered.
*/ */
unregister(name) { async unregister(name) {
return new Promise((resolve) => { if (!this._overlays[name]) {
if (!this._overlays[name]) { throw new Error('The overlay does not exist.');
throw new Error('The overlay does not exist.'); } else if (this._active === name) {
} else if (this._active === name) { throw new Error('The overlay cannot be removed while it is active.');
throw new Error('The overlay cannot be removed while it is active.'); }
} delete this._overlays[name];
delete this._overlays[name];
resolve();
});
} }
/** /**
@ -77,26 +72,23 @@ class OverlayManager {
* @returns {Promise} A promise that is resolved when the overlay has been * @returns {Promise} A promise that is resolved when the overlay has been
* opened. * opened.
*/ */
open(name) { async open(name) {
return new Promise((resolve) => { if (!this._overlays[name]) {
if (!this._overlays[name]) { throw new Error('The overlay does not exist.');
throw new Error('The overlay does not exist.'); } else if (this._active) {
} else if (this._active) { if (this._overlays[name].canForceClose) {
if (this._overlays[name].canForceClose) { this._closeThroughCaller();
this._closeThroughCaller(); } else if (this._active === name) {
} else if (this._active === name) { throw new Error('The overlay is already active.');
throw new Error('The overlay is already active.'); } else {
} else { throw new Error('Another overlay is currently active.');
throw new Error('Another overlay is currently active.');
}
} }
this._active = name; }
this._overlays[this._active].element.classList.remove('hidden'); this._active = name;
this._overlays[this._active].container.classList.remove('hidden'); this._overlays[this._active].element.classList.remove('hidden');
this._overlays[this._active].container.classList.remove('hidden');
window.addEventListener('keydown', this._keyDownBound); window.addEventListener('keydown', this._keyDownBound);
resolve();
});
} }
/** /**
@ -104,22 +96,19 @@ class OverlayManager {
* @returns {Promise} A promise that is resolved when the overlay has been * @returns {Promise} A promise that is resolved when the overlay has been
* closed. * closed.
*/ */
close(name) { async close(name) {
return new Promise((resolve) => { if (!this._overlays[name]) {
if (!this._overlays[name]) { throw new Error('The overlay does not exist.');
throw new Error('The overlay does not exist.'); } else if (!this._active) {
} else if (!this._active) { throw new Error('The overlay is currently not active.');
throw new Error('The overlay is currently not active.'); } else if (this._active !== name) {
} else if (this._active !== name) { throw new Error('Another overlay is currently active.');
throw new Error('Another overlay is currently active.'); }
} this._overlays[this._active].container.classList.add('hidden');
this._overlays[this._active].container.classList.add('hidden'); this._overlays[this._active].element.classList.add('hidden');
this._overlays[this._active].element.classList.add('hidden'); this._active = null;
this._active = null;
window.removeEventListener('keydown', this._keyDownBound); window.removeEventListener('keydown', this._keyDownBound);
resolve();
});
} }
/** /**