pdfjs-dist/lib/web/secondary_toolbar.js

/**
 * @licstart The following is the entire license notice for the
 * Javascript code in this page
 *
 * Copyright 2019 Mozilla Foundation
 *
 * 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.
 *
 * @licend The above is the entire license notice for the
 * Javascript code in this page
 */
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.SecondaryToolbar = void 0;

var _ui_utils = require("./ui_utils");

var _pdf_cursor_tools = require("./pdf_cursor_tools");

var _pdf_single_page_viewer = require("./pdf_single_page_viewer");

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var SecondaryToolbar =
/*#__PURE__*/
function () {
  function SecondaryToolbar(options, mainContainer, eventBus) {
    var _this = this;

    _classCallCheck(this, SecondaryToolbar);

    this.toolbar = options.toolbar;
    this.toggleButton = options.toggleButton;
    this.toolbarButtonContainer = options.toolbarButtonContainer;
    this.buttons = [{
      element: options.presentationModeButton,
      eventName: 'presentationmode',
      close: true
    }, {
      element: options.openFileButton,
      eventName: 'openfile',
      close: true
    }, {
      element: options.printButton,
      eventName: 'print',
      close: true
    }, {
      element: options.downloadButton,
      eventName: 'download',
      close: true
    }, {
      element: options.viewBookmarkButton,
      eventName: null,
      close: true
    }, {
      element: options.firstPageButton,
      eventName: 'firstpage',
      close: true
    }, {
      element: options.lastPageButton,
      eventName: 'lastpage',
      close: true
    }, {
      element: options.pageRotateCwButton,
      eventName: 'rotatecw',
      close: false
    }, {
      element: options.pageRotateCcwButton,
      eventName: 'rotateccw',
      close: false
    }, {
      element: options.cursorSelectToolButton,
      eventName: 'switchcursortool',
      eventDetails: {
        tool: _pdf_cursor_tools.CursorTool.SELECT
      },
      close: true
    }, {
      element: options.cursorHandToolButton,
      eventName: 'switchcursortool',
      eventDetails: {
        tool: _pdf_cursor_tools.CursorTool.HAND
      },
      close: true
    }, {
      element: options.scrollVerticalButton,
      eventName: 'switchscrollmode',
      eventDetails: {
        mode: _ui_utils.ScrollMode.VERTICAL
      },
      close: true
    }, {
      element: options.scrollHorizontalButton,
      eventName: 'switchscrollmode',
      eventDetails: {
        mode: _ui_utils.ScrollMode.HORIZONTAL
      },
      close: true
    }, {
      element: options.scrollWrappedButton,
      eventName: 'switchscrollmode',
      eventDetails: {
        mode: _ui_utils.ScrollMode.WRAPPED
      },
      close: true
    }, {
      element: options.spreadNoneButton,
      eventName: 'switchspreadmode',
      eventDetails: {
        mode: _ui_utils.SpreadMode.NONE
      },
      close: true
    }, {
      element: options.spreadOddButton,
      eventName: 'switchspreadmode',
      eventDetails: {
        mode: _ui_utils.SpreadMode.ODD
      },
      close: true
    }, {
      element: options.spreadEvenButton,
      eventName: 'switchspreadmode',
      eventDetails: {
        mode: _ui_utils.SpreadMode.EVEN
      },
      close: true
    }, {
      element: options.documentPropertiesButton,
      eventName: 'documentproperties',
      close: true
    }];
    this.items = {
      firstPage: options.firstPageButton,
      lastPage: options.lastPageButton,
      pageRotateCw: options.pageRotateCwButton,
      pageRotateCcw: options.pageRotateCcwButton
    };
    this.mainContainer = mainContainer;
    this.eventBus = eventBus;
    this.opened = false;
    this.containerHeight = null;
    this.previousContainerHeight = null;
    this.reset();

    this._bindClickListeners();

    this._bindCursorToolsListener(options);

    this._bindScrollModeListener(options);

    this._bindSpreadModeListener(options);

    this.eventBus.on('resize', this._setMaxHeight.bind(this));
    this.eventBus.on('baseviewerinit', function (evt) {
      if (evt.source instanceof _pdf_single_page_viewer.PDFSinglePageViewer) {
        _this.toolbarButtonContainer.classList.add('hiddenScrollModeButtons', 'hiddenSpreadModeButtons');
      } else {
        _this.toolbarButtonContainer.classList.remove('hiddenScrollModeButtons', 'hiddenSpreadModeButtons');
      }
    });
  }

  _createClass(SecondaryToolbar, [{
    key: "setPageNumber",
    value: function setPageNumber(pageNumber) {
      this.pageNumber = pageNumber;

      this._updateUIState();
    }
  }, {
    key: "setPagesCount",
    value: function setPagesCount(pagesCount) {
      this.pagesCount = pagesCount;

      this._updateUIState();
    }
  }, {
    key: "reset",
    value: function reset() {
      this.pageNumber = 0;
      this.pagesCount = 0;

      this._updateUIState();

      this.eventBus.dispatch('secondarytoolbarreset', {
        source: this
      });
    }
  }, {
    key: "_updateUIState",
    value: function _updateUIState() {
      this.items.firstPage.disabled = this.pageNumber <= 1;
      this.items.lastPage.disabled = this.pageNumber >= this.pagesCount;
      this.items.pageRotateCw.disabled = this.pagesCount === 0;
      this.items.pageRotateCcw.disabled = this.pagesCount === 0;
    }
  }, {
    key: "_bindClickListeners",
    value: function _bindClickListeners() {
      var _this2 = this;

      this.toggleButton.addEventListener('click', this.toggle.bind(this));

      var _loop = function _loop(button) {
        var _this2$buttons$button = _this2.buttons[button],
            element = _this2$buttons$button.element,
            eventName = _this2$buttons$button.eventName,
            close = _this2$buttons$button.close,
            eventDetails = _this2$buttons$button.eventDetails;
        element.addEventListener('click', function (evt) {
          if (eventName !== null) {
            var details = {
              source: _this2
            };

            for (var property in eventDetails) {
              details[property] = eventDetails[property];
            }

            _this2.eventBus.dispatch(eventName, details);
          }

          if (close) {
            _this2.close();
          }
        });
      };

      for (var button in this.buttons) {
        _loop(button);
      }
    }
  }, {
    key: "_bindCursorToolsListener",
    value: function _bindCursorToolsListener(buttons) {
      this.eventBus.on('cursortoolchanged', function (_ref) {
        var tool = _ref.tool;
        buttons.cursorSelectToolButton.classList.toggle('toggled', tool === _pdf_cursor_tools.CursorTool.SELECT);
        buttons.cursorHandToolButton.classList.toggle('toggled', tool === _pdf_cursor_tools.CursorTool.HAND);
      });
    }
  }, {
    key: "_bindScrollModeListener",
    value: function _bindScrollModeListener(buttons) {
      var _this3 = this;

      function scrollModeChanged(_ref2) {
        var mode = _ref2.mode;
        buttons.scrollVerticalButton.classList.toggle('toggled', mode === _ui_utils.ScrollMode.VERTICAL);
        buttons.scrollHorizontalButton.classList.toggle('toggled', mode === _ui_utils.ScrollMode.HORIZONTAL);
        buttons.scrollWrappedButton.classList.toggle('toggled', mode === _ui_utils.ScrollMode.WRAPPED);
        var isScrollModeHorizontal = mode === _ui_utils.ScrollMode.HORIZONTAL;
        buttons.spreadNoneButton.disabled = isScrollModeHorizontal;
        buttons.spreadOddButton.disabled = isScrollModeHorizontal;
        buttons.spreadEvenButton.disabled = isScrollModeHorizontal;
      }

      this.eventBus.on('scrollmodechanged', scrollModeChanged);
      this.eventBus.on('secondarytoolbarreset', function (evt) {
        if (evt.source === _this3) {
          scrollModeChanged({
            mode: _ui_utils.ScrollMode.VERTICAL
          });
        }
      });
    }
  }, {
    key: "_bindSpreadModeListener",
    value: function _bindSpreadModeListener(buttons) {
      var _this4 = this;

      function spreadModeChanged(_ref3) {
        var mode = _ref3.mode;
        buttons.spreadNoneButton.classList.toggle('toggled', mode === _ui_utils.SpreadMode.NONE);
        buttons.spreadOddButton.classList.toggle('toggled', mode === _ui_utils.SpreadMode.ODD);
        buttons.spreadEvenButton.classList.toggle('toggled', mode === _ui_utils.SpreadMode.EVEN);
      }

      this.eventBus.on('spreadmodechanged', spreadModeChanged);
      this.eventBus.on('secondarytoolbarreset', function (evt) {
        if (evt.source === _this4) {
          spreadModeChanged({
            mode: _ui_utils.SpreadMode.NONE
          });
        }
      });
    }
  }, {
    key: "open",
    value: function open() {
      if (this.opened) {
        return;
      }

      this.opened = true;

      this._setMaxHeight();

      this.toggleButton.classList.add('toggled');
      this.toolbar.classList.remove('hidden');
    }
  }, {
    key: "close",
    value: function close() {
      if (!this.opened) {
        return;
      }

      this.opened = false;
      this.toolbar.classList.add('hidden');
      this.toggleButton.classList.remove('toggled');
    }
  }, {
    key: "toggle",
    value: function toggle() {
      if (this.opened) {
        this.close();
      } else {
        this.open();
      }
    }
  }, {
    key: "_setMaxHeight",
    value: function _setMaxHeight() {
      if (!this.opened) {
        return;
      }

      this.containerHeight = this.mainContainer.clientHeight;

      if (this.containerHeight === this.previousContainerHeight) {
        return;
      }

      this.toolbarButtonContainer.setAttribute('style', 'max-height: ' + (this.containerHeight - _ui_utils.SCROLLBAR_PADDING) + 'px;');
      this.previousContainerHeight = this.containerHeight;
    }
  }, {
    key: "isOpen",
    get: function get() {
      return this.opened;
    }
  }]);

  return SecondaryToolbar;
}();

exports.SecondaryToolbar = SecondaryToolbar;