options-widget.tsx

/********************************************************************************
 * Copyright (C) 2023 Ericsson, Arm and others.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the Eclipse
 * Public License v. 2.0 are satisfied: GNU General Public License, version 2
 * with the GNU Classpath Exception which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 ********************************************************************************/

import { Formik, FormikConfig, FormikErrors, FormikProps } from 'formik';
import { Button } from 'primereact/button';
import { Dropdown, DropdownChangeEvent } from 'primereact/dropdown';
import { InputText } from 'primereact/inputtext';
import { OverlayPanel } from 'primereact/overlaypanel';
import { classNames } from 'primereact/utils';
import React, { FocusEventHandler, KeyboardEvent, KeyboardEventHandler, MouseEventHandler, ReactNode } from 'react';
import { TableRenderOptions } from '../columns/column-contribution-service';
import { AddressPaddingOptions, MemoryState, SerializedTableRenderOptions } from '../utils/view-types';
import { MultiSelectWithLabel } from './multi-select';
import { CONFIG_BYTES_PER_WORD_CHOICES, CONFIG_GROUPS_PER_ROW_CHOICES, CONFIG_WORDS_PER_GROUP_CHOICES } from '../../plugin/manifest';
import { tryToNumber } from '../../common/typescript';
import { Checkbox } from 'primereact/checkbox';
import { MemoryOptions, ReadMemoryArguments, SessionContext } from '../../common/messaging';
import { validateMemoryReference, validateOffset, validateCount } from '../../common/memory';
import { Endianness } from '../../common/memory-range';
import { createSectionVscodeContext } from '../utils/vscode-contexts';

export interface OptionsWidgetProps
    extends Omit<TableRenderOptions, 'scrollingBehavior' | 'effectiveAddressLength'> {
    sessionContext: SessionContext;
    configuredReadArguments: Required<ReadMemoryArguments>;
    activeReadArguments: Required<ReadMemoryArguments>;
    title: string;
    updateRenderOptions: (options: Partial<SerializedTableRenderOptions>) => void;
    resetRenderOptions: () => void;
    updateTitle: (title: string) => void;
    updateMemoryState: (state: Partial<MemoryState>) => void;
    fetchMemory(partialOptions?: MemoryOptions): Promise<void>
    toggleColumn(id: string, isVisible: boolean): void;
    toggleFrozen: () => void;
    isFrozen: boolean;
    storeMemory(): void;
    applyMemory(): void;
}

interface OptionsWidgetState {
    isTitleEditing: boolean;
}

const enum InputId {
    Address = 'address',
    Offset = 'offset',
    Length = 'length',
    BytesPerWord = 'word-size',
    WordsPerGroup = 'words-per-group',
    GroupsPerRow = 'groups-per-row',
    EndiannessId = 'endianness',
    AddressPadding = 'address-padding',
    AddressRadix = 'address-radix',
    ShowRadixPrefix = 'show-radix-prefix',
}

interface OptionsForm {
    address: string;
    offset: string;
    count: string;
}

export class OptionsWidget extends React.Component<OptionsWidgetProps, OptionsWidgetState> {
    protected formConfig: FormikConfig<OptionsForm>;
    protected extendedOptions = React.createRef<OverlayPanel>();
    protected labelEditInput = React.createRef<HTMLInputElement>();
    protected coreOptionsDiv = React.createRef<HTMLDivElement>();
    protected optionsMenuContext = createSectionVscodeContext('optionsWidget');
    protected advancedOptionsContext = createSectionVscodeContext('advancedOptionsOverlay');

    protected get optionsFormValues(): OptionsForm {
        return {
            address: this.props.configuredReadArguments.memoryReference,
            offset: this.props.configuredReadArguments.offset.toString(),
            count: this.props.configuredReadArguments.count.toString(),
        };
    }

    constructor(props: OptionsWidgetProps) {
        super(props);

        this.formConfig = {
            initialValues: this.optionsFormValues,
            enableReinitialize: true,
            validate: this.validate,
            onSubmit: () => {
                this.props.fetchMemory(this.props.configuredReadArguments);
            },
        };
        this.state = { isTitleEditing: false };
    }

    protected validate = (values: OptionsForm) => {
        const errors: FormikErrors<OptionsForm> = {};
        const addressError = values.address.trim().length === 0 ? 'Required' : validateMemoryReference(values.address);
        if (addressError) {
            errors.address = addressError;
        }
        const offsetError = values.offset.trim().length === 0 ? 'Required' : validateOffset(values.offset);
        if (offsetError) {
            errors.offset = offsetError;
        }
        const countError = values.count.trim().length === 0 ? 'Required' : validateCount(values.count);
        if (countError) {
            errors.count = countError;
        }
        return errors;
    };

    componentDidUpdate(_: Readonly<OptionsWidgetProps>, prevState: Readonly<OptionsWidgetState>): void {
        if (!prevState.isTitleEditing && this.state.isTitleEditing) {
            this.labelEditInput.current?.focus();
            this.labelEditInput.current?.select();
        }
    }

    override render(): React.ReactNode {
        this.formConfig.initialValues = this.optionsFormValues;
        const isLabelEditing = this.state.isTitleEditing;
        const isFrozen = this.props.isFrozen;
        const readDisabled = isFrozen || !this.props.sessionContext.canRead;
        const freezeContentToggleTitle = isFrozen ? 'Unfreeze Memory View' : 'Freeze Memory View';
        const activeMemoryReadArgumentHint = (userValue: string | number, memoryValue: string | number): ReactNode | undefined => {
            if (userValue !== memoryValue) {
                return <small className="form-options-memory-read-argument-hint">Actual: {memoryValue}</small>;
            }
        };

        return (
            <div className='memory-options-widget px-4' {...this.optionsMenuContext}>
                <div className='title-container'>
                    <Button
                        type='button'
                        className={`freeze-content-toggle ${isFrozen ? 'toggled' : ''}`}
                        icon={'codicon codicon-' + (isFrozen ? 'lock' : 'unlock')}
                        onClick={this.props.toggleFrozen}
                        title={freezeContentToggleTitle}
                        aria-label={freezeContentToggleTitle}
                        rounded
                        aria-haspopup
                    />
                    <InputText
                        ref={this.labelEditInput}
                        type='text'
                        onKeyDown={this.handleTitleEditingKeyDown}
                        onBlur={this.confirmEditedTitle}
                        style={{ display: isLabelEditing ? 'block' : 'none' }}
                    />
                    {!isLabelEditing && (
                        <h1 onDoubleClick={this.enableTitleEditing}>{this.props.title}</h1>
                    )}
                    {!isLabelEditing && (
                        <>
                            <Button
                                type='button'
                                className='edit-label-toggle'
                                icon='codicon codicon-edit'
                                onClick={this.enableTitleEditing}
                                title='Edit view title'
                                aria-label='Edit view title'
                                rounded
                                aria-haspopup
                            />
                            <Button
                                type='button'
                                className='store-file-button'
                                icon='codicon codicon-save'
                                onClick={this.props.storeMemory}
                                disabled={!this.props.sessionContext.canWrite}
                                title='Store Memory as File'
                                aria-label='Store Memory as File'
                                rounded
                                aria-haspopup
                            />
                            <Button
                                type='button'
                                className='apply-file-button'
                                icon='codicon codicon-folder-opened'
                                onClick={this.props.applyMemory}
                                disabled={!this.props.sessionContext.canRead}
                                title='Apply Memory from File'
                                aria-label='Apply Memory from File'
                                rounded
                                aria-haspopup
                            />
                        </>
                    )}
                </div>
                <div className='core-options py-2' ref={this.coreOptionsDiv}>
                    <Formik {...this.formConfig}>
                        {formik => (
                            <form onSubmit={formik.handleSubmit} className='form-options'>
                                <span className={'pm-top-label form-textfield form-texfield-long'}>
                                    <label htmlFor={InputId.Address} className={`p-inputtext-label ${readDisabled ? 'p-disabled' : ''}`} >
                                        Address
                                    </label>
                                    <InputText
                                        id={InputId.Address}
                                        className={classNames({ 'p-invalid': formik.errors.address })}
                                        {...formik.getFieldProps('address')}
                                        onKeyDown={this.handleKeyDown}
                                        onBlur={ev => this.doHandleBlur(ev, formik)}
                                        disabled={readDisabled}
                                    />
                                    {formik.errors.address ?
                                        (<small className='p-invalid'>
                                            {formik.errors.address}
                                        </small>)
                                        : undefined}
                                    {activeMemoryReadArgumentHint(this.props.configuredReadArguments.memoryReference, this.props.activeReadArguments.memoryReference)}
                                </span>
                                <span className='pm-top-label form-textfield'>
                                    <label htmlFor={InputId.Offset} className={`p-inputtext-label ${readDisabled ? 'p-disabled' : ''}`}>
                                        Offset
                                    </label>
                                    <InputText
                                        id={InputId.Offset}
                                        className={classNames({ 'p-invalid': formik.errors.offset })}
                                        {...formik.getFieldProps('offset')}
                                        onKeyDown={this.handleKeyDown}
                                        onBlur={ev => this.doHandleBlur(ev, formik)}
                                        disabled={readDisabled}
                                    />
                                    {formik.errors.offset ?
                                        (<small className='p-invalid'>
                                            {formik.errors.offset}
                                        </small>)
                                        : undefined}
                                    {activeMemoryReadArgumentHint(this.props.configuredReadArguments.offset, this.props.activeReadArguments.offset)}
                                </span>
                                <span className='pm-top-label form-textfield'>
                                    <label htmlFor={InputId.Length} className={`p-inputtext-label ${readDisabled ? 'p-disabled' : ''}`}>
                                        Length
                                    </label>
                                    <InputText
                                        id={InputId.Length}
                                        className={classNames({ 'p-invalid': formik.errors.count })}
                                        {...formik.getFieldProps('count')}
                                        onKeyDown={this.handleKeyDown}
                                        onBlur={ev => this.doHandleBlur(ev, formik)}
                                        disabled={readDisabled}
                                    />
                                    {formik.errors.count ?
                                        (<small className='p-invalid'>
                                            {formik.errors.count}
                                        </small>)
                                        : undefined}
                                    {activeMemoryReadArgumentHint(this.props.configuredReadArguments.count, this.props.activeReadArguments.count)}
                                </span>
                                <Button type='submit' disabled={!formik.isValid || readDisabled}>
                                    Go
                                </Button>
                            </form>
                        )}
                    </Formik>
                    <Button
                        className='advanced-options-toggle'
                        icon='codicon codicon-gear'
                        onClick={event =>
                            this.extendedOptions?.current?.toggle(event)
                        }
                        type='button'
                        title='Advanced Display Options'
                        rounded
                        aria-label='Advanced Display Options'
                        aria-haspopup
                    ></Button>
                    <OverlayPanel ref={this.extendedOptions} {...this.advancedOptionsContext}>
                        <Button
                            icon='codicon codicon-discard'
                            className='reset-advanced-options-icon'
                            onClick={this.handleResetAdvancedOptions}
                            title='Reset to Defaults'
                            rounded
                            aria-label='Reset to Defaults'
                            aria-haspopup
                        />
                        <div className='advanced-options-content'>
                            {!!this.props.columnOptions.length && (
                                <MultiSelectWithLabel
                                    id='column-select'
                                    label='Columns'
                                    items={this.props.columnOptions
                                        .filter(({ configurable }) => configurable)
                                        .map(column => ({
                                            id: column.contribution.id,
                                            label: column.contribution.label,
                                            checked: column.active,
                                        }))}
                                    onSelectionChanged={this.handleColumnActivationChange}
                                />
                            )}

                            <h2>Memory Format</h2>
                            <label
                                htmlFor={InputId.BytesPerWord}
                                className='advanced-options-label mt-1'
                            >
                                Bytes per Word
                            </label>
                            <Dropdown
                                id={InputId.BytesPerWord}
                                value={this.props.bytesPerWord}
                                onChange={this.handleAdvancedOptionsDropdownChange}
                                options={[...CONFIG_BYTES_PER_WORD_CHOICES]}
                                className='advanced-options-dropdown' />

                            <label
                                htmlFor={InputId.WordsPerGroup}
                                className='advanced-options-label mt-1'
                            >
                                Words per Group
                            </label>
                            <Dropdown
                                id={InputId.WordsPerGroup}
                                value={this.props.wordsPerGroup}
                                onChange={this.handleAdvancedOptionsDropdownChange}
                                options={[...CONFIG_WORDS_PER_GROUP_CHOICES]}
                                className='advanced-options-dropdown' />
                            <label
                                htmlFor={InputId.GroupsPerRow}
                                className='advanced-options-label'
                            >
                                Groups per Row
                            </label>
                            <Dropdown
                                id={InputId.GroupsPerRow}
                                value={this.props.groupsPerRow}
                                onChange={this.handleAdvancedOptionsDropdownChange}
                                options={[...CONFIG_GROUPS_PER_ROW_CHOICES]}
                                className='advanced-options-dropdown' />

                            <label
                                htmlFor={InputId.EndiannessId}
                                className='advanced-options-label mt-1'
                            >
                                Group Endianness
                            </label>
                            <Dropdown
                                id={InputId.EndiannessId}
                                value={this.props.endianness}
                                onChange={this.handleAdvancedOptionsDropdownChange}
                                options={Object.values(Endianness)}
                                className='advanced-options-dropdown' />

                            <h2>Address Format</h2>

                            <label
                                htmlFor={InputId.AddressPadding}
                                className='advanced-options-label'
                            >
                                Address Padding
                            </label>
                            <Dropdown
                                id={InputId.AddressPadding}
                                value={this.props.addressPadding}
                                onChange={this.handleAdvancedOptionsDropdownChange}
                                options={Object.entries(AddressPaddingOptions).map(([label, value]) => ({ label, value }))}
                                className="advanced-options-dropdown" />

                            <label
                                htmlFor={InputId.AddressRadix}
                                className='advanced-options-label'
                            >
                                Format (Radix)
                            </label>
                            <Dropdown
                                id={InputId.AddressRadix}
                                value={Number(this.props.addressRadix)}
                                onChange={this.handleAdvancedOptionsDropdownChange}
                                options={[
                                    { label: '2 - Binary', value: 2 },
                                    { label: '8 - Octal', value: 8 },
                                    { label: '10 - Decimal', value: 10 },
                                    { label: '16 - Hexadecimal', value: 16 }
                                ]}
                                className="advanced-options-dropdown" />

                            <div className='flex align-items-center'>
                                <Checkbox
                                    id={InputId.ShowRadixPrefix}
                                    onChange={this.handleAdvancedOptionsDropdownChange}
                                    checked={!!this.props.showRadixPrefix}
                                />
                                <label htmlFor={InputId.ShowRadixPrefix} className='ml-2'>Display Radix Prefix</label>
                            </div>
                        </div>
                    </OverlayPanel>
                </div>
            </div>
        );
    }

    protected doHandleBlur(
        ev: React.FocusEvent<HTMLInputElement>,
        formik: FormikProps<OptionsForm>
    ): void {
        formik.handleBlur(ev);
        const id = ev.currentTarget.id as InputId;
        const value = ev.currentTarget.value;

        this.updateOptions(id, value);
    }

    protected handleKeyDown: (event: KeyboardEvent<HTMLInputElement>) => void = e => this.doHandleKeyDown(e);
    protected doHandleKeyDown(event: KeyboardEvent<HTMLInputElement>): void {
        if (event.key === 'Enter') {
            const id = event.currentTarget.id as InputId;
            const value = event.currentTarget.value;

            this.updateOptions(id, value);
        }
    }

    protected updateOptions(id: InputId, value: string): void {
        switch (id) {
            case InputId.Address:
                this.props.updateMemoryState({
                    configuredReadArguments: {
                        ...this.props.configuredReadArguments,
                        memoryReference: value,
                    }
                });
                break;
            case InputId.Offset:
                if (!Number.isNaN(value)) {
                    this.props.updateMemoryState({
                        configuredReadArguments: {
                            ...this.props.configuredReadArguments,
                            offset: Number(value),
                        }
                    });
                }
                break;
            case InputId.Length:
                if (!Number.isNaN(value)) {
                    this.props.updateMemoryState({
                        configuredReadArguments: {
                            ...this.props.configuredReadArguments,
                            count: Number(value),
                        }
                    });
                }
                break;
            default: {
                throw new Error(`${id} can not be handled. Did you call the correct method?`);
            }
        }
    }

    protected handleAdvancedOptionsDropdownChange: (event: DropdownChangeEvent) => void = e => this.doHandleAdvancedOptionsDropdownChange(e);
    protected doHandleAdvancedOptionsDropdownChange(event: DropdownChangeEvent): void {
        const id = event.target.id as InputId;
        const value = event.target.value;
        switch (id) {
            case InputId.BytesPerWord:
                this.props.updateRenderOptions({ bytesPerWord: Number(value) });
                break;
            case InputId.WordsPerGroup:
                this.props.updateRenderOptions({ wordsPerGroup: Number(value) });
                break;
            case InputId.GroupsPerRow:
                this.props.updateRenderOptions({ groupsPerRow: tryToNumber(value) ?? value });
                break;
            case InputId.EndiannessId:
                this.props.updateRenderOptions({ endianness: value });
                break;
            case InputId.AddressPadding:
                this.props.updateRenderOptions({ addressPadding: value });
                break;
            case InputId.AddressRadix:
                this.props.updateRenderOptions({ addressRadix: Number(value) });
                break;
            case InputId.ShowRadixPrefix:
                this.props.updateRenderOptions({ showRadixPrefix: !!event.target.checked });
                break;
            default: {
                throw new Error(`${id} can not be handled. Did you call the correct method?`);
            }
        }
    }

    protected handleColumnActivationChange: (labelSelected: string, newSelectionState: boolean) => void = (label, state) => this.doHandleColumnActivationChange(label, state);
    doHandleColumnActivationChange(label: string, isVisible: boolean): void {
        const columnState = this.props.columnOptions.find(columnStatus => columnStatus.contribution.label.toLowerCase() === label.toLowerCase());
        const columnId = columnState?.contribution.id;
        if (columnId) {
            this.props.toggleColumn(columnId, isVisible);
        }
    }

    protected handleResetAdvancedOptions: MouseEventHandler<HTMLButtonElement> | undefined = () => this.props.resetRenderOptions();

    protected enableTitleEditing = () => this.doEnableTitleEditing();
    protected doEnableTitleEditing(): void {
        if (this.labelEditInput.current) {
            this.labelEditInput.current.value = this.props.title;
        }
        this.setState({ isTitleEditing: true });
    }

    protected disableTitleEditing = () => this.doDisableTitleEditing();
    protected doDisableTitleEditing(): void {
        this.setState({ isTitleEditing: false });
    }

    protected handleTitleEditingKeyDown: KeyboardEventHandler<HTMLInputElement> | undefined = event => this.doHandleTitleEditingKeyDown(event);
    protected doHandleTitleEditingKeyDown(event: React.KeyboardEvent<HTMLInputElement>): void {
        if (event.key === 'Enter' && this.labelEditInput.current) {
            this.doConfirmEditedTitle();
        } else if (event.key === 'Escape') {
            this.disableTitleEditing();
        }
    }

    protected confirmEditedTitle: FocusEventHandler<HTMLInputElement> | undefined = () => this.doConfirmEditedTitle();
    protected doConfirmEditedTitle(): void {
        if (this.state.isTitleEditing && this.labelEditInput.current) {
            this.props.updateTitle(this.labelEditInput.current.value.trim());
            this.disableTitleEditing();
        }
    }

    public showAdvancedOptions(): void {
        if (this.extendedOptions.current && this.coreOptionsDiv.current) {
            if (!this.extendedOptions.current.getElement()) {
                this.coreOptionsDiv.current.querySelector<HTMLButtonElement>('.advanced-options-toggle')?.click();
            }
        }
    }

}