text: /**
   * Copyright (c) 2016 Guyon Roche
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   *
   */
  'use strict';
  
  var utils = require('../../../utils/utils');
  var colCache = require('../../../utils/col-cache');
  var BaseXform = require('../base-xform');
  
  var VIEW_STATES = {
    frozen: 'frozen',
    frozenSplit: 'frozen',
    split: 'split'
  };
  
  var SheetViewXform = module.exports = function() {
  };
  
  utils.inherits(SheetViewXform, BaseXform, {
    
    get tag() { return 'sheetView'; },
    
    prepare: function(model) {
      switch(model.state) {
        case 'frozen':
        case 'split':
          break;
        default:
          model.state = 'normal';
          break;
      }
    },
  
    render: function(xmlStream, model) {
      xmlStream.openNode('sheetView', {
        workbookViewId: model.workbookViewId || 0
      });
      var add = function(name, value, included) {
        if (included) {
          xmlStream.addAttribute(name, value);
        }
      };
      add('tabSelected', '1', model.tabSelected);
      add('showRuler', '0', model.showRuler === false);
      add('showRowColHeaders', '0', model.showRowColHeaders === false);
      add('showGridlines', '0', model.showGridlines === false);
      add('zoomScale', model.zoomScale, model.zoomScale);
      add('zoomScaleNormal', model.zoomScaleNormal, model.zoomScaleNormal);
      add('view', model.style, model.style);
      
      var topLeftCell, xSplit, ySplit, activePane;
      switch(model.state) {
        case 'frozen':
          //  <sheetView tabSelected="1" workbookViewId="0">
          //   <pane xSplit="2" ySplit="2" topLeftCell="C3" activePane="bottomRight" state="frozen"/>
          //   <selection pane="bottomRight" activeCell="C3" sqref="C3"/>
          //  </sheetView>
          xSplit = model.xSplit || 0;
          ySplit = model.ySplit || 0;
          topLeftCell = model.topLeftCell || colCache.getAddress(ySplit + 1, xSplit + 1).address;
          activePane = (model.xSplit && model.ySplit) ? 'bottomRight' : (model.xSplit ? 'topRight' : 'bottomLeft');
          xmlStream.leafNode('pane', {
            xSplit: model.xSplit || undefined,
            ySplit: model.ySplit || undefined,
            topLeftCell: topLeftCell,
            activePane: activePane,
            state: 'frozen'
          });
          xmlStream.leafNode('selection', {
            pane: activePane,
            activeCell: model.activeCell,
            sqref: model.activeCell
          });
          break;
        case 'split':
          //  <sheetView tabSelected="1" workbookViewId="1">
          //   <pane xSplit="3432" ySplit="1152" topLeftCell="D4" activePane="bottomRight"/>
          //   <selection pane="bottomRight" activeCell="D4" sqref="D4"/>
          //  </sheetView>
          if (model.activePane === 'topLeft') {
            model.activePane = undefined;
          }
          xmlStream.leafNode('pane', {
            xSplit: model.xSplit || undefined,
            ySplit:  model.ySplit || undefined,
            topLeftCell: model.topLeftCell,
            activePane: model.activePane
          });
          xmlStream.leafNode('selection', {
            pane: model.activePane,
            activeCell: model.activeCell,
            sqref: model.activeCell
          });
          break;
        case 'normal':
          if (model.activeCell) {
            xmlStream.leafNode('selection', {
              activeCell: model.activeCell,
              sqref: model.activeCell
            });
          }
          break;
      }
      xmlStream.closeNode();
    },
    
    parseOpen: function(node) {
      switch(node.name) {
        case 'sheetView':
          this.sheetView = {
            workbookViewId: parseInt(node.attributes.workbookViewId),
            tabSelected: node.attributes.tabSelected === '1',
            showRuler: !(node.attributes.showRuler === '0'),
            showRowColHeaders: !(node.attributes.showRowColHeaders === '0'),
            showGridlines: !(node.attributes.showGridlines === '0'),
            zoomScale: parseInt(node.attributes.zoomScale || 100),
            zoomScaleNormal: parseInt(node.attributes.zoomScaleNormal || 100),
            style: node.attributes.view
          };
          this.pane = undefined;
          this.selections = {};
          return true;
        case 'pane':
          this.pane = {
            xSplit: parseInt(node.attributes.xSplit || 0),
            ySplit: parseInt(node.attributes.ySplit || 0),
            topLeftCell: node.attributes.topLeftCell,
            activePane:  node.attributes.activePane || 'topLeft',
            state: node.attributes.state
          };
          return true;
        case 'selection':
          var name = node.attributes.pane || 'topLeft';
          this.selections[name] = {
            pane: name,
            activeCell: node.attributes.activeCell
          };
          return true;
        default:
          return false;
      }
    },
    parseText: function() {
    },
    parseClose: function(name) {
      var model, selection;
      switch(name) {
        case 'sheetView':
          if (this.sheetView && this.pane) {
            model = this.model = {
              workbookViewId: this.sheetView.workbookViewId,
              state: VIEW_STATES[this.pane.state] || 'split', // split is default
              xSplit: this.pane.xSplit,
              ySplit: this.pane.ySplit,
              topLeftCell: this.pane.topLeftCell,
              showRuler: this.sheetView.showRuler,
              showRowColHeaders: this.sheetView.showRowColHeaders,
              showGridlines: this.sheetView.showGridlines,
              zoomScale: this.sheetView.zoomScale,
              zoomScaleNormal: this.sheetView.zoomScaleNormal
            };
            if (this.model.state === 'split') {
              model.activePane = this.pane.activePane;
            }
            selection = this.selections[this.pane.activePane];
            if (selection && selection.activeCell) {
              model.activeCell = selection.activeCell;
            }
            if (this.sheetView.style) {
              model.style = this.sheetView.style;
            }
          } else {
            model = this.model = {
              workbookViewId: this.sheetView.workbookViewId,
              state: 'normal',
              showRuler: this.sheetView.showRuler,
              showRowColHeaders: this.sheetView.showRowColHeaders,
              showGridlines: this.sheetView.showGridlines,
              zoomScale: this.sheetView.zoomScale,
              zoomScaleNormal: this.sheetView.zoomScaleNormal
            };
            selection = this.selections.topLeft;
            if (selection && selection.activeCell) {
              model.activeCell = selection.activeCell;
            }
            if (this.sheetView.style) {
              model.style = this.sheetView.style;
            }
          }
          return false;
        default:
          return true;
      }
    },
    
    reconcile: function(model, options) {
    }
  });
  