daggerheart/module/applications/sheets/api/base-item.mjs

import DHApplicationMixin from './application-mixin.mjs';

const { ItemSheetV2 } = foundry.applications.sheets;

/**
 * A base item sheet extending {@link ItemSheetV2} via {@link DHApplicationMixin}
 * @extends ItemSheetV2
 * @mixes DHSheetV2
 */
export default class DHBaseItemSheet extends DHApplicationMixin(ItemSheetV2) {
    /** @inheritDoc */
    static DEFAULT_OPTIONS = {
        classes: ['item'],
        position: { width: 600 },
        form: {
            submitOnChange: true
        },
        actions: {
            addFeature: DHBaseItemSheet.#addFeature,
            editFeature: DHBaseItemSheet.#editFeature,
            removeFeature: DHBaseItemSheet.#removeFeature
        },
        dragDrop: [
            { dragSelector: null, dropSelector: '.tab.features .drop-section' },
            { dragSelector: '.feature-item', dropSelector: null }
        ]
    };

    /* -------------------------------------------- */

    /** @inheritdoc */
    static TABS = {
        primary: {
            tabs: [{ id: 'description' }, { id: 'features' }, { id: 'settings' }],
            initial: 'description',
            labelPrefix: 'DAGGERHEART.Sheets.TABS'
        }
    };

    /* -------------------------------------------- */
    /*  Prepare Context                             */
    /* -------------------------------------------- */

    /**@inheritdoc */
    async _preparePartContext(partId, context) {
        await super._preparePartContext(partId, context);
        const { TextEditor } = foundry.applications.ux;

        switch (partId) {
            case 'description':
                const value = foundry.utils.getProperty(this.document, 'system.description') ?? '';
                context.enrichedDescription = await TextEditor.enrichHTML(value, {
                    relativeTo: this.item,
                    rollData: this.item.getRollData(),
                    secrets: this.item.isOwner
                });
                break;
        }

        return context;
    }

    /* -------------------------------------------- */
    /*  Application Clicks Actions                  */
    /* -------------------------------------------- */

    /**
     * Add a new feature to the item, prompting the user for its type.
     * @param {PointerEvent} _event - The originating click event
     * @param {HTMLElement} _button - The capturing HTML element which defines the [data-action="addFeature"]
     */
    static async #addFeature(_event, _button) {
        const feature = await game.items.documentClass.create({
            type: 'feature',
            name: game.i18n.localize('DAGGERHEART.General.newFeature')
        });
        await this.document.update({
            'system.features': [...this.document.system.features.filter(x => x).map(x => x.uuid), feature.uuid]
        });
    }

    /**
     * Edit an existing feature on the item
     * @param {PointerEvent} _event - The originating click event
     * @param {HTMLElement} button - The capturing HTML element which defines the [data-action="editFeature"]
     */
    static async #editFeature(_event, button) {
        const target = button.closest('.feature-item');
        const feature = this.document.system.features.find(x => x?.id === target.id);
        if (!feature) {
            ui.notifications.warn(game.i18n.localize('DAGGERHEART.UI.notifications.featureIsMissing'));
            return;
        }

        feature.sheet.render(true);
    }

    /**
     * Remove a feature from the item.
     * @param {PointerEvent} event - The originating click event
     * @param {HTMLElement} button - The capturing HTML element which defines the [data-action="removeFeature"]
     */
    static async #removeFeature(event, button) {
        event.stopPropagation();
        const target = button.closest('.feature-item');

        await this.document.update({
            'system.features': this.document.system.features
                .filter(feature => feature && feature.id !== target.id)
                .map(x => x.uuid)
        });
    }

    /* -------------------------------------------- */
    /*  Application Drag/Drop                       */
    /* -------------------------------------------- */

    /**
     * On dragStart on the item.
     * @param {DragEvent} event - The drag event
     */
    async _onDragStart(event) {
        const featureItem = event.currentTarget.closest('.feature-item');

        if (featureItem) {
            const feature = this.document.system.features.find(x => x?.id === featureItem.id);
            if (!feature) {
                ui.notifications.warn(game.i18n.localize('DAGGERHEART.UI.notifications.featureIsMissing'));
                return;
            }

            const featureData = { type: 'Item', data: { ...feature.toObject(), _id: null }, fromInternal: true };
            event.dataTransfer.setData('text/plain', JSON.stringify(featureData));
            event.dataTransfer.setDragImage(featureItem.querySelector('img'), 60, 0);
        }
    }

    /**
     * On drop on the item.
     * @param {DragEvent} event - The drag event
     */
    async _onDrop(event) {
        const data = foundry.applications.ux.TextEditor.implementation.getDragEventData(event);
        if (data.fromInternal) return;

        const item = await fromUuid(data.uuid);
        if (item?.type === 'feature') {
            const current = this.document.system.features.map(x => x.uuid);
            await this.document.update({ 'system.features': [...current, item.uuid] });
        }
    }
}