extensions/objects/templates/numeric-expression-editor.component.ts - develop - githubmirror/oppia

extensions/objects/templates/numeric-expression-editor.component.ts
138 строк5 KB
Hardik Goyal
Fix #7092: Remove downgradeComponent (#21903)
18 фев 2025, 21:22
18 фев 2025, 21:224dbd84c
// Copyright 2020 The Oppia Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/**
 * @fileoverview Component for numeric expression editor.
 */

// Every editor directive should implement an alwaysEditable option. There
// may be additional customization options for the editor that should be passed
// in via initArgs.
import {Component, EventEmitter, Input, OnInit, Output} from '@angular/core';
import {ObjectFormValidityChangeEvent} from 'app-events/app-events';
import {EventBusGroup, EventBusService} from 'app-events/event-bus.service';
import {AppConstants} from 'app.constants';
import {DeviceInfoService} from 'services/contextual/device-info.service';
import {GuppyConfigurationService} from 'services/guppy-configuration.service';
import {GuppyInitializationService} from 'services/guppy-initialization.service';
import {MathInteractionsService} from 'services/math-interactions.service';
import {FocusObj} from './math-equation-editor.component';

@Component({
  selector: 'numeric-expression-editor',
  templateUrl: './numeric-expression-editor.component.html',
})
export class NumericExpressionEditorComponent implements OnInit {
  // These properties are initialized using Angular lifecycle hooks
  // and we need to do non-null assertion. For more information, see
  // https://github.com/oppia/oppia/wiki/Guide-on-defining-types#ts-7-1
  @Input() modalId!: symbol;
  @Input() value!: string;
  @Output() valueChanged = new EventEmitter();
  currentValue!: string;

  warningText = '';
  hasBeenTouched = false;
  alwaysEditable: boolean = false;
  eventBusGroup: EventBusGroup;

  constructor(
    private deviceInfoService: DeviceInfoService,
    private eventBusService: EventBusService,
    private guppyConfigurationService: GuppyConfigurationService,
    private guppyInitializationService: GuppyInitializationService,
    private mathInteractionsService: MathInteractionsService
  ) {
    this.eventBusGroup = new EventBusGroup(this.eventBusService);
  }

  ngOnInit(): void {
    this.alwaysEditable = true;
    this.hasBeenTouched = false;
    if (this.value === null || this.value === undefined) {
      this.value = '';
      this.valueChanged.emit(this.value);
    }
    this.currentValue = this.value;
    this.guppyConfigurationService.init();
    this.guppyInitializationService.init(
      'guppy-div-creator',
      AppConstants.MATH_INTERACTION_PLACEHOLDERS.NumericExpressionInput,
      this.value
    );

    Guppy.event('change', (focusObj: FocusObj) => {
      const activeGuppyObject =
        this.guppyInitializationService.findActiveGuppyObject();
      if (activeGuppyObject !== undefined) {
        this.hasBeenTouched = true;
        this.currentValue = activeGuppyObject.guppyInstance.asciimath();
        this.isCurrentAnswerValid();
      }
      if (!focusObj.focused) {
        this.isCurrentAnswerValid();
      }
    });
    Guppy.event('focus', (focusObj: FocusObj) => {
      if (!focusObj.focused) {
        this.isCurrentAnswerValid();
      }
    });
  }

  isCurrentAnswerValid(): boolean {
    if (this.currentValue === undefined) {
      this.currentValue = '';
    }
    // Replacing abs symbol, '|x|', with text, 'abs(x)' since the symbol
    // is not compatible with nerdamer or with the backend validations.
    this.currentValue = this.mathInteractionsService.replaceAbsSymbolWithText(
      this.currentValue
    );
    var answerIsValid = this.mathInteractionsService.validateNumericExpression(
      this.currentValue
    );
    if (this.guppyInitializationService.findActiveGuppyObject() === undefined) {
      // The warnings should only be displayed when the editor is inactive
      // focus, i.e., the user is done typing.
      this.warningText = this.mathInteractionsService.getWarningText();
    } else {
      this.warningText = '';
    }
    if (answerIsValid) {
      // Explicitly inserting '*' signs wherever necessary.
      this.currentValue =
        this.mathInteractionsService.insertMultiplicationSigns(
          this.currentValue
        );
      this.value = this.currentValue;
      this.valueChanged.emit(this.value);
    }
    if (!this.hasBeenTouched) {
      this.warningText = '';
    }
    this.eventBusGroup.emit(
      new ObjectFormValidityChangeEvent({
        modalId: this.modalId,
        value: !answerIsValid,
      })
    );
    return answerIsValid;
  }

  showOSK(): void {
    this.guppyInitializationService.setShowOSK(true);
    GuppyInitializationService.interactionType = 'NumericExpressionInput';
  }
}