"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.DragManager = void 0;
var _crProtocolHelper = require("./crProtocolHelper");
var _utils = require("../../utils");
/**
 * Copyright (c) Microsoft Corporation.
 *
 * 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.
*/

class DragManager {
  constructor(page) {
    this._crPage = void 0;
    this._dragState = null;
    this._lastPosition = {
      x: 0,
      y: 0
    };
    this._crPage = page;
  }
  async cancelDrag() {
    if (!this._dragState) return false;
    await this._crPage._mainFrameSession._client.send('Input.dispatchDragEvent', {
      type: 'dragCancel',
      x: this._lastPosition.x,
      y: this._lastPosition.y,
      data: {
        items: [],
        dragOperationsMask: 0xFFFF
      }
    });
    this._dragState = null;
    return true;
  }
  async interceptDragCausedByMove(x, y, button, buttons, modifiers, moveCallback) {
    this._lastPosition = {
      x,
      y
    };
    if (this._dragState) {
      await this._crPage._mainFrameSession._client.send('Input.dispatchDragEvent', {
        type: 'dragOver',
        x,
        y,
        data: this._dragState,
        modifiers: (0, _crProtocolHelper.toModifiersMask)(modifiers)
      });
      return;
    }
    if (button !== 'left') return moveCallback();
    const client = this._crPage._mainFrameSession._client;
    let onDragIntercepted;
    const dragInterceptedPromise = new Promise(x => onDragIntercepted = x);
    function setupDragListeners() {
      let didStartDrag = Promise.resolve(false);
      let dragEvent = null;
      const dragListener = event => dragEvent = event;
      const mouseListener = () => {
        didStartDrag = new Promise(callback => {
          window.addEventListener('dragstart', dragListener, {
            once: true,
            capture: true
          });
          setTimeout(() => callback(dragEvent ? !dragEvent.defaultPrevented : false), 0);
        });
      };
      window.addEventListener('mousemove', mouseListener, {
        once: true,
        capture: true
      });
      window.__cleanupDrag = async () => {
        const val = await didStartDrag;
        window.removeEventListener('mousemove', mouseListener, {
          capture: true
        });
        window.removeEventListener('dragstart', dragListener, {
          capture: true
        });
        delete window.__cleanupDrag;
        return val;
      };
    }
    await this._crPage._page.safeNonStallingEvaluateInAllFrames(`(${setupDragListeners.toString()})()`, 'utility');
    client.on('Input.dragIntercepted', onDragIntercepted);
    try {
      await client.send('Input.setInterceptDrags', {
        enabled: true
      });
    } catch {
      // If Input.setInterceptDrags is not supported, just do a regular move.
      // This can be removed once we stop supporting old Electron.
      client.off('Input.dragIntercepted', onDragIntercepted);
      return moveCallback();
    }
    await moveCallback();
    const expectingDrag = (await Promise.all(this._crPage._page.frames().map(async frame => {
      return frame.nonStallingEvaluateInExistingContext('window.__cleanupDrag && window.__cleanupDrag()', 'utility').catch(() => false);
    }))).some(x => x);
    this._dragState = expectingDrag ? (await dragInterceptedPromise).data : null;
    client.off('Input.dragIntercepted', onDragIntercepted);
    await client.send('Input.setInterceptDrags', {
      enabled: false
    });
    if (this._dragState) {
      await this._crPage._mainFrameSession._client.send('Input.dispatchDragEvent', {
        type: 'dragEnter',
        x,
        y,
        data: this._dragState,
        modifiers: (0, _crProtocolHelper.toModifiersMask)(modifiers)
      });
    }
  }
  isDragging() {
    return !!this._dragState;
  }
  async drop(x, y, modifiers) {
    (0, _utils.assert)(this._dragState, 'missing drag state');
    await this._crPage._mainFrameSession._client.send('Input.dispatchDragEvent', {
      type: 'drop',
      x,
      y,
      data: this._dragState,
      modifiers: (0, _crProtocolHelper.toModifiersMask)(modifiers)
    });
    this._dragState = null;
  }
}
exports.DragManager = DragManager;