104 lines
2.3 KiB
TypeScript
104 lines
2.3 KiB
TypeScript
// comp-data.ts - definition and methods of the Data component
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import { sendMsg } from './common'
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// Data component
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export function Data(name, action, domain: string): object {
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domain = domain || this.conf.domain
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const comp = {
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id: this.conf.itemid,
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name: name, // also used as class of incoming/outgoing message
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action: action, // (default) action of outgoing message
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domain: domain, // domain of incoming/outgoing message
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data: {}, // model (2-way data store)
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data_bak: {}, // backup copy when leaving view or edit mode
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meta: {}, // metadata (params) for each data field
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mode: 'view',
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handle, // handle incoming messages
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exec, // default function to execute upon button click
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initField, // initialize field (= @mounted)
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chmode,
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copynew
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}
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this.components[name] = comp
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if (comp.id) {
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sendMsg(this.conf, [domain, 'query', name, comp.id], {})
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}
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return comp
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}
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// Data methods
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function handle(domain, action, class_, item: string, data: Object) {
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if (action == 'data') {
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Object.assign(this.data, data)
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}
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}
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function exec(action: string) {
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action = action || this.action
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const data = this.data
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const conf = this.conf
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let value = ''
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for (const k of Object.keys(data)) {
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value += `${k}: ${data[k]}, `
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}
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this.output += '\n' + value
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console.log('exec:', value)
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sendMsg(conf, [this.domain, action, this.name, data.id], data)
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}
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function initField(name: string, meta: any) {
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if (meta.defexpr) {
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meta.default = eval(meta.defexpr)
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}
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this.data[name] = meta.default || ""
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this.meta[name] = meta
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}
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function chmode(action: string) {
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if (this.mode == action) {
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return
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}
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if (this.mode == 'view') {
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Object.assign(this.data_bak, this.data)
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}
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switch(action) {
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case 'query':
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setQuery(this)
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break
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case 'new':
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setNew(this)
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break
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default:
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Object.assign(this.data, this.data_bak)
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}
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this.mode = action
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}
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function copynew(action: string) {
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Object.assign(this.data, this.data_bak)
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this.data.id = ''
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this.mode = 'new'
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}
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// helper functions for data manipulation (used by Data component)
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function setQuery(obj) {
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for (const key in obj.data) {
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obj.data[key] = ''
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}
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}
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function setNew(obj) {
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for (const key in obj.data) {
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obj.data[key] = ''
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const meta = obj.meta[key]
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if (meta) {
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obj.data[key] = meta.default || ''
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}
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}
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obj.data.id = ''
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}
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