React SC Web UI template

This project is a starting point to create web interfaces for OSTIS in React. Here you can find a working demo and some examples. The project is using TypeScript. Components are added to the DOM as strings.

Build and run a demo

• Install yarn (example for Ubuntu: sudo apt install yarn)
• Install dependencies and run a dev server: yarn && yarn run start
• Run sc-server from sc-machine (our API server):

cd <path-to-sc-machine>/scripts
./run_sc_server.sh

• Open URL http://localhost:3003 in web browser

Example of button with handler creation

Let's see an example of ui components creation and how they operate with sc-memory. We will create a button for node creation and button for its visualization in SCg.

Firs of all we need to open needed file. In our case SCsInputContainer.ts. We can find these lines:

buttonsGroup.innerHTML = `
    <button class="ui green left bottom attached button" scs-search>Search</button>
    <button class="ui bottom attached button" scs-create>Create</button>
    <button class="ui disabled red right bottom attached button" scs-generate>Generate</button>
`;

This code block shows addition of HTML-elements to the DOM tree.

Then we need to create event:

private get scsCreateButton() : HTMLElement {
    return this.scsButtonsContainer.querySelector('button[scs-create]');
}

This getter will give us button component. Inside InitHtml we can find onclick event binding:

this.scsCreateButton.onclick = () => {
    this.DoCreate(this._scsEditor.content)
}

Example of connection to sc-memory

In onclick event we are bind already we will create node with system identifier and main identifier (identifier received in SCs-editor). The purpose of DoCreate is to handle input text, call query to sc-memory and wait for the answer.

public async DoCreate(scsContent: string) {
    if (this._onNewCreateRequestCallback) { // проверяем наличие метода с запросом
        const result: boolean = await this._onNewCreateRequestCallback(scsContent); // call the method and pass input text to it
    }

    return new Promise<void>((resolve) => {
        resolve();
    });
}

Let's move to the KBView class inside KnowBaseView.ts.

private async OnRequestCreate(scsText: string): Promise<boolean> {
    const createResult: ScAddr = await App.Templates().DoCreate(scsText);

    return new Promise<boolean>((resolve) => {
        resolve(true);
    })
}

Then ServerTemplates class inside ServerTemplates.ts.

public async DoCreate(scsTempl: string): Promise<ScAddr> {
    const addr: ScAddr = await this.CreateNodeWithMainIdentifier(scsTempl);
    this._addr = addr;
    alert(JSON.stringify(addr));
    return new Promise<ScAddr>((resolve) => {
        resolve(addr);
    });
}

Method of node generation with specified system and main identifier:

public async CreateNodeWithMainIdentifier(identifier: string): Promise<ScAddr> {
    let construction = new ScConstruction();
    construction.CreateNode(ScType.Node, 'node')
    construction.CreateLink(ScType.Link, new ScLinkContent(identifier, ScLinkContentType.String), 'link')
    construction.CreateEdge(ScType.EdgeDCommonConst, 'node', 'link', 'edge')
    construction.CreateEdge(ScType.EdgeAccessConstPosPerm, this.keynodes.kNrelMainIdtf, 'edge');
    construction.CreateEdge(ScType.EdgeAccessConstPosPerm, this.keynodes.kNrelSysIdtf, 'edge');
    let addr = await this.client.CreateElements(construction);
    return addr[0];
}

Method of main identifier search by given ScAddr:

  public async GetMainIdentifier(addr: ScAddr): Promise<ScTemplateSearchResult> {
    let scTemplate = new ScTemplate();
    let linkAlias = "link";
    scTemplate.TripleWithRelation(addr, ScType.Unknown, [ScType.Link, linkAlias], ScType.Unknown, this.keynodes.kNrelMainIdtf);
    let result = await this.client.TemplateSearch(scTemplate);
    return result;
  }