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plugin-manager.ts
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plugin-manager.ts
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import { IMondrianData } from "../data-manager";
import { MondrianRenderer } from "../renderer/renderer";
import { MondrianShared } from "../shared";
import {
IMondrianPluginConstructor,
MondrianPlugin,
PluginType,
} from "./plugin";
import { CirclePlugin } from "./circle-plugin";
import { ClearPlugin } from "./clear-plugin";
import { CursorPlugin } from "./cursor-plugin";
import { EraserBrushPlugin } from "./eraser-plugin";
import { HighlighterBrushPlugin } from "./highlighter-plugin";
import { HistoryPlugin } from "./history-plugin";
import { PencilBrushPlugin } from "./pencil-plugin";
import { RectanglePlugin } from "./rectangle-plugin";
import { TrianglePlugin } from "./triangle-plugin";
import { StrokePlugin } from "./stroke-plugin";
import { ViewportPlugin } from "./viewport-plugin";
interface IMondrianPluginInstanceRecord {
classRef: IMondrianPluginConstructor;
instance: MondrianPlugin;
}
export class MondrianPluginManager {
constructor(
private _renderer: MondrianRenderer,
private shared: MondrianShared
) {
this.register(HistoryPlugin);
this.register(ClearPlugin);
this.register(CursorPlugin);
this.register(PencilBrushPlugin);
this.register(EraserBrushPlugin);
this.register(HighlighterBrushPlugin);
this.register(RectanglePlugin);
this.register(CirclePlugin);
this.register(TrianglePlugin);
this.register(StrokePlugin);
this.register(ViewportPlugin);
}
private _instanceRecordMap: {
[PluginType.Global]: Map<symbol, IMondrianPluginInstanceRecord>;
[PluginType.ConsumerExcludesive]?: IMondrianPluginInstanceRecord;
} = {
[PluginType.Global]: new Map(),
[PluginType.ConsumerExcludesive]: undefined,
};
private _suspendedInstanceRecord?: IMondrianPluginInstanceRecord;
private _pluginClassRefList: IMondrianPluginConstructor[] = [];
// todo if priority do matters, replace array with link list
private _instanceRecordList: IMondrianPluginInstanceRecord[] = [];
load(pluginClassRef: IMondrianPluginConstructor) {
// clear excludesive plugin before loading
if (
pluginClassRef.Type === PluginType.ConsumerExcludesive ||
pluginClassRef.Type === PluginType.ConsumerTemp
) {
const record = this._instanceRecordMap[PluginType.ConsumerExcludesive];
if (record) {
const i = this._instanceRecordList.findIndex((instanceRecord) => {
return instanceRecord.classRef === record.classRef;
});
const [removed] = this._instanceRecordList.splice(i, 1);
this._instanceRecordMap[PluginType.ConsumerExcludesive] = undefined;
if (pluginClassRef.Type === PluginType.ConsumerTemp) {
this._suspendedInstanceRecord = removed;
}
}
}
const instance = new pluginClassRef(this._renderer, this.shared, this);
const instanceRecord = {
classRef: pluginClassRef,
instance: instance,
};
this._instanceRecordList.push(instanceRecord);
if (
pluginClassRef.Type === PluginType.ConsumerExcludesive ||
pluginClassRef.Type === PluginType.ConsumerTemp
) {
this._instanceRecordMap[PluginType.ConsumerExcludesive] = instanceRecord;
} else {
this._instanceRecordMap[pluginClassRef.Type].set(
pluginClassRef.PID,
instanceRecord
);
}
}
restore() {
if (this._suspendedInstanceRecord) {
const current = this._instanceRecordMap[PluginType.ConsumerExcludesive];
if (current) {
const i = this._instanceRecordList.findIndex((instanceRecord) => {
return instanceRecord.classRef === current.classRef;
});
this._instanceRecordList.splice(i, 1, this._suspendedInstanceRecord);
this._instanceRecordMap[PluginType.ConsumerExcludesive] =
this._suspendedInstanceRecord;
this._suspendedInstanceRecord = undefined;
}
}
}
interateInstances(cb: (plugin: MondrianPlugin) => void) {
this._instanceRecordList.forEach((p) => {
cb(p.instance);
});
}
register(pluginClassRef: IMondrianPluginConstructor) {
if (this._pluginClassRefList.includes(pluginClassRef)) {
throw new Error("duplicated plugin registered.");
}
this._pluginClassRefList.push(pluginClassRef);
}
predicateAndLoad(data: IMondrianData | null) {
try {
this._pluginClassRefList
.filter((ref) => {
return ref.predicate(data, this.shared);
})
.forEach((ref) => {
this.load(ref);
});
} catch (error) {
console.log(error);
alert("todo: handle dirty data. Temporarily, try to clear channel data.");
}
}
}