pdfjs-dist/lib/web/pdf_find_bar.js

/* Copyright 2017 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.
 */
'use strict';
var uiUtils = require('./ui_utils.js');
var pdfFindController = require('./pdf_find_controller.js');
var mozL10n = uiUtils.mozL10n;
var FindStates = pdfFindController.FindStates;
var PDFFindBar = function PDFFindBarClosure() {
 function PDFFindBar(options) {
  this.opened = false;
  this.bar = options.bar || null;
  this.toggleButton = options.toggleButton || null;
  this.findField = options.findField || null;
  this.highlightAll = options.highlightAllCheckbox || null;
  this.caseSensitive = options.caseSensitiveCheckbox || null;
  this.findMsg = options.findMsg || null;
  this.findResultsCount = options.findResultsCount || null;
  this.findStatusIcon = options.findStatusIcon || null;
  this.findPreviousButton = options.findPreviousButton || null;
  this.findNextButton = options.findNextButton || null;
  this.findController = options.findController || null;
  this.eventBus = options.eventBus;
  if (this.findController === null) {
   throw new Error('PDFFindBar cannot be used without a ' + 'PDFFindController instance.');
  }
  var self = this;
  this.toggleButton.addEventListener('click', function () {
   self.toggle();
  });
  this.findField.addEventListener('input', function () {
   self.dispatchEvent('');
  });
  this.bar.addEventListener('keydown', function (evt) {
   switch (evt.keyCode) {
   case 13:
    if (evt.target === self.findField) {
     self.dispatchEvent('again', evt.shiftKey);
    }
    break;
   case 27:
    self.close();
    break;
   }
  });
  this.findPreviousButton.addEventListener('click', function () {
   self.dispatchEvent('again', true);
  });
  this.findNextButton.addEventListener('click', function () {
   self.dispatchEvent('again', false);
  });
  this.highlightAll.addEventListener('click', function () {
   self.dispatchEvent('highlightallchange');
  });
  this.caseSensitive.addEventListener('click', function () {
   self.dispatchEvent('casesensitivitychange');
  });
 }
 PDFFindBar.prototype = {
  reset: function PDFFindBar_reset() {
   this.updateUIState();
  },
  dispatchEvent: function PDFFindBar_dispatchEvent(type, findPrev) {
   this.eventBus.dispatch('find', {
    source: this,
    type: type,
    query: this.findField.value,
    caseSensitive: this.caseSensitive.checked,
    phraseSearch: true,
    highlightAll: this.highlightAll.checked,
    findPrevious: findPrev
   });
  },
  updateUIState: function PDFFindBar_updateUIState(state, previous, matchCount) {
   var notFound = false;
   var findMsg = '';
   var status = '';
   switch (state) {
   case FindStates.FIND_FOUND:
    break;
   case FindStates.FIND_PENDING:
    status = 'pending';
    break;
   case FindStates.FIND_NOTFOUND:
    findMsg = mozL10n.get('find_not_found', null, 'Phrase not found');
    notFound = true;
    break;
   case FindStates.FIND_WRAPPED:
    if (previous) {
     findMsg = mozL10n.get('find_reached_top', null, 'Reached top of document, continued from bottom');
    } else {
     findMsg = mozL10n.get('find_reached_bottom', null, 'Reached end of document, continued from top');
    }
    break;
   }
   if (notFound) {
    this.findField.classList.add('notFound');
   } else {
    this.findField.classList.remove('notFound');
   }
   this.findField.setAttribute('data-status', status);
   this.findMsg.textContent = findMsg;
   this.updateResultsCount(matchCount);
  },
  updateResultsCount: function (matchCount) {
   if (!this.findResultsCount) {
    return;
   }
   if (!matchCount) {
    this.findResultsCount.classList.add('hidden');
    return;
   }
   this.findResultsCount.textContent = matchCount.toLocaleString();
   this.findResultsCount.classList.remove('hidden');
  },
  open: function PDFFindBar_open() {
   if (!this.opened) {
    this.opened = true;
    this.toggleButton.classList.add('toggled');
    this.bar.classList.remove('hidden');
   }
   this.findField.select();
   this.findField.focus();
  },
  close: function PDFFindBar_close() {
   if (!this.opened) {
    return;
   }
   this.opened = false;
   this.toggleButton.classList.remove('toggled');
   this.bar.classList.add('hidden');
   this.findController.active = false;
  },
  toggle: function PDFFindBar_toggle() {
   if (this.opened) {
    this.close();
   } else {
    this.open();
   }
  }
 };
 return PDFFindBar;
}();
exports.PDFFindBar = PDFFindBar;