import { __extends } from '../../../../../../tslib@2.3.0/node_modules/tslib/tslib.es6.mjs';
import { isArray, bind, clone, retrieve2, each, isString } from '../../../../../../zrender@6.0.0/node_modules/zrender/lib/core/util.mjs';
import { createIcon } from '../../util/graphic.mjs';
import { box } from '../../util/layout.mjs';
import LegendView from './LegendView.mjs';
import Group$1 from '../../../../../../zrender@6.0.0/node_modules/zrender/lib/graphic/Group.mjs';
import ZRText from '../../../../../../zrender@6.0.0/node_modules/zrender/lib/graphic/Text.mjs';
import Rect from '../../../../../../zrender@6.0.0/node_modules/zrender/lib/graphic/shape/Rect.mjs';
import { updateProps } from '../../animation/basicTransition.mjs';

var Group = Group$1;
var WH = ['width', 'height'];
var XY = ['x', 'y'];
var ScrollableLegendView = /** @class */function (_super) {
  __extends(ScrollableLegendView, _super);
  function ScrollableLegendView() {
    var _this = _super !== null && _super.apply(this, arguments) || this;
    _this.type = ScrollableLegendView.type;
    _this.newlineDisabled = true;
    _this._currentIndex = 0;
    return _this;
  }
  ScrollableLegendView.prototype.init = function () {
    _super.prototype.init.call(this);
    this.group.add(this._containerGroup = new Group());
    this._containerGroup.add(this.getContentGroup());
    this.group.add(this._controllerGroup = new Group());
  };
  /**
   * @override
   */
  ScrollableLegendView.prototype.resetInner = function () {
    _super.prototype.resetInner.call(this);
    this._controllerGroup.removeAll();
    this._containerGroup.removeClipPath();
    this._containerGroup.__rectSize = null;
  };
  /**
   * @override
   */
  ScrollableLegendView.prototype.renderInner = function (itemAlign, legendModel, ecModel, api, selector, orient, selectorPosition) {
    var self = this;
    // Render content items.
    _super.prototype.renderInner.call(this, itemAlign, legendModel, ecModel, api, selector, orient, selectorPosition);
    var controllerGroup = this._controllerGroup;
    // FIXME: support be 'auto' adapt to size number text length,
    // e.g., '3/12345' should not overlap with the control arrow button.
    var pageIconSize = legendModel.get('pageIconSize', true);
    var pageIconSizeArr = isArray(pageIconSize) ? pageIconSize : [pageIconSize, pageIconSize];
    createPageButton('pagePrev', 0);
    var pageTextStyleModel = legendModel.getModel('pageTextStyle');
    controllerGroup.add(new ZRText({
      name: 'pageText',
      style: {
        // Placeholder to calculate a proper layout.
        text: 'xx/xx',
        fill: pageTextStyleModel.getTextColor(),
        font: pageTextStyleModel.getFont(),
        verticalAlign: 'middle',
        align: 'center'
      },
      silent: true
    }));
    createPageButton('pageNext', 1);
    function createPageButton(name, iconIdx) {
      var pageDataIndexName = name + 'DataIndex';
      var icon = createIcon(legendModel.get('pageIcons', true)[legendModel.getOrient().name][iconIdx], {
        // Buttons will be created in each render, so we do not need
        // to worry about avoiding using legendModel kept in scope.
        onclick: bind(self._pageGo, self, pageDataIndexName, legendModel, api)
      }, {
        x: -pageIconSizeArr[0] / 2,
        y: -pageIconSizeArr[1] / 2,
        width: pageIconSizeArr[0],
        height: pageIconSizeArr[1]
      });
      icon.name = name;
      controllerGroup.add(icon);
    }
  };
  /**
   * @override
   */
  ScrollableLegendView.prototype.layoutInner = function (legendModel, itemAlign, maxSize, isFirstRender, selector, selectorPosition) {
    var selectorGroup = this.getSelectorGroup();
    var orientIdx = legendModel.getOrient().index;
    var wh = WH[orientIdx];
    var xy = XY[orientIdx];
    var hw = WH[1 - orientIdx];
    var yx = XY[1 - orientIdx];
    selector && box(
    // Buttons in selectorGroup always layout horizontally
    'horizontal', selectorGroup, legendModel.get('selectorItemGap', true));
    var selectorButtonGap = legendModel.get('selectorButtonGap', true);
    var selectorRect = selectorGroup.getBoundingRect();
    var selectorPos = [-selectorRect.x, -selectorRect.y];
    var processMaxSize = clone(maxSize);
    selector && (processMaxSize[wh] = maxSize[wh] - selectorRect[wh] - selectorButtonGap);
    var mainRect = this._layoutContentAndController(legendModel, isFirstRender, processMaxSize, orientIdx, wh, hw, yx, xy);
    if (selector) {
      if (selectorPosition === 'end') {
        selectorPos[orientIdx] += mainRect[wh] + selectorButtonGap;
      } else {
        var offset = selectorRect[wh] + selectorButtonGap;
        selectorPos[orientIdx] -= offset;
        mainRect[xy] -= offset;
      }
      mainRect[wh] += selectorRect[wh] + selectorButtonGap;
      selectorPos[1 - orientIdx] += mainRect[yx] + mainRect[hw] / 2 - selectorRect[hw] / 2;
      mainRect[hw] = Math.max(mainRect[hw], selectorRect[hw]);
      mainRect[yx] = Math.min(mainRect[yx], selectorRect[yx] + selectorPos[1 - orientIdx]);
      selectorGroup.x = selectorPos[0];
      selectorGroup.y = selectorPos[1];
      selectorGroup.markRedraw();
    }
    return mainRect;
  };
  ScrollableLegendView.prototype._layoutContentAndController = function (legendModel, isFirstRender, maxSize, orientIdx, wh, hw, yx, xy) {
    var contentGroup = this.getContentGroup();
    var containerGroup = this._containerGroup;
    var controllerGroup = this._controllerGroup;
    // Place items in contentGroup.
    box(legendModel.get('orient'), contentGroup, legendModel.get('itemGap'), !orientIdx ? null : maxSize.width, orientIdx ? null : maxSize.height);
    box(
    // Buttons in controller are layout always horizontally.
    'horizontal', controllerGroup, legendModel.get('pageButtonItemGap', true));
    var contentRect = contentGroup.getBoundingRect();
    var controllerRect = controllerGroup.getBoundingRect();
    var showController = this._showController = contentRect[wh] > maxSize[wh];
    // In case that the inner elements of contentGroup layout do not based on [0, 0]
    var contentPos = [-contentRect.x, -contentRect.y];
    // Remain contentPos when scroll animation perfroming.
    // If first rendering, `contentGroup.position` is [0, 0], which
    // does not make sense and may cause unexepcted animation if adopted.
    if (!isFirstRender) {
      contentPos[orientIdx] = contentGroup[xy];
    }
    // Layout container group based on 0.
    var containerPos = [0, 0];
    var controllerPos = [-controllerRect.x, -controllerRect.y];
    var pageButtonGap = retrieve2(legendModel.get('pageButtonGap', true), legendModel.get('itemGap', true));
    // Place containerGroup and controllerGroup and contentGroup.
    if (showController) {
      var pageButtonPosition = legendModel.get('pageButtonPosition', true);
      // controller is on the right / bottom.
      if (pageButtonPosition === 'end') {
        controllerPos[orientIdx] += maxSize[wh] - controllerRect[wh];
      }
      // controller is on the left / top.
      else {
        containerPos[orientIdx] += controllerRect[wh] + pageButtonGap;
      }
    }
    // Always align controller to content as 'middle'.
    controllerPos[1 - orientIdx] += contentRect[hw] / 2 - controllerRect[hw] / 2;
    contentGroup.setPosition(contentPos);
    containerGroup.setPosition(containerPos);
    controllerGroup.setPosition(controllerPos);
    // Calculate `mainRect` and set `clipPath`.
    // mainRect should not be calculated by `this.group.getBoundingRect()`
    // for sake of the overflow.
    var mainRect = {
      x: 0,
      y: 0
    };
    // Consider content may be overflow (should be clipped).
    mainRect[wh] = showController ? maxSize[wh] : contentRect[wh];
    mainRect[hw] = Math.max(contentRect[hw], controllerRect[hw]);
    // `containerRect[yx] + containerPos[1 - orientIdx]` is 0.
    mainRect[yx] = Math.min(0, controllerRect[yx] + controllerPos[1 - orientIdx]);
    containerGroup.__rectSize = maxSize[wh];
    if (showController) {
      var clipShape = {
        x: 0,
        y: 0
      };
      clipShape[wh] = Math.max(maxSize[wh] - controllerRect[wh] - pageButtonGap, 0);
      clipShape[hw] = mainRect[hw];
      containerGroup.setClipPath(new Rect({
        shape: clipShape
      }));
      // Consider content may be larger than container, container rect
      // can not be obtained from `containerGroup.getBoundingRect()`.
      containerGroup.__rectSize = clipShape[wh];
    } else {
      // Do not remove or ignore controller. Keep them set as placeholders.
      controllerGroup.eachChild(function (child) {
        child.attr({
          invisible: true,
          silent: true
        });
      });
    }
    // Content translate animation.
    var pageInfo = this._getPageInfo(legendModel);
    pageInfo.pageIndex != null && updateProps(contentGroup, {
      x: pageInfo.contentPosition[0],
      y: pageInfo.contentPosition[1]
    },
    // When switch from "show controller" to "not show controller", view should be
    // updated immediately without animation, otherwise causes weird effect.
    showController ? legendModel : null);
    this._updatePageInfoView(legendModel, pageInfo);
    return mainRect;
  };
  ScrollableLegendView.prototype._pageGo = function (to, legendModel, api) {
    var scrollDataIndex = this._getPageInfo(legendModel)[to];
    scrollDataIndex != null && api.dispatchAction({
      type: 'legendScroll',
      scrollDataIndex: scrollDataIndex,
      legendId: legendModel.id
    });
  };
  ScrollableLegendView.prototype._updatePageInfoView = function (legendModel, pageInfo) {
    var controllerGroup = this._controllerGroup;
    each(['pagePrev', 'pageNext'], function (name) {
      var key = name + 'DataIndex';
      var canJump = pageInfo[key] != null;
      var icon = controllerGroup.childOfName(name);
      if (icon) {
        icon.setStyle('fill', canJump ? legendModel.get('pageIconColor', true) : legendModel.get('pageIconInactiveColor', true));
        icon.cursor = canJump ? 'pointer' : 'default';
      }
    });
    var pageText = controllerGroup.childOfName('pageText');
    var pageFormatter = legendModel.get('pageFormatter');
    var pageIndex = pageInfo.pageIndex;
    var current = pageIndex != null ? pageIndex + 1 : 0;
    var total = pageInfo.pageCount;
    pageText && pageFormatter && pageText.setStyle('text', isString(pageFormatter) ? pageFormatter.replace('{current}', current == null ? '' : current + '').replace('{total}', total == null ? '' : total + '') : pageFormatter({
      current: current,
      total: total
    }));
  };
  /**
   *  contentPosition: Array.<number>, null when data item not found.
   *  pageIndex: number, null when data item not found.
   *  pageCount: number, always be a number, can be 0.
   *  pagePrevDataIndex: number, null when no previous page.
   *  pageNextDataIndex: number, null when no next page.
   * }
   */
  ScrollableLegendView.prototype._getPageInfo = function (legendModel) {
    var scrollDataIndex = legendModel.get('scrollDataIndex', true);
    var contentGroup = this.getContentGroup();
    var containerRectSize = this._containerGroup.__rectSize;
    var orientIdx = legendModel.getOrient().index;
    var wh = WH[orientIdx];
    var xy = XY[orientIdx];
    var targetItemIndex = this._findTargetItemIndex(scrollDataIndex);
    var children = contentGroup.children();
    var targetItem = children[targetItemIndex];
    var itemCount = children.length;
    var pCount = !itemCount ? 0 : 1;
    var result = {
      contentPosition: [contentGroup.x, contentGroup.y],
      pageCount: pCount,
      pageIndex: pCount - 1,
      pagePrevDataIndex: null,
      pageNextDataIndex: null
    };
    if (!targetItem) {
      return result;
    }
    var targetItemInfo = getItemInfo(targetItem);
    result.contentPosition[orientIdx] = -targetItemInfo.s;
    // Strategy:
    // (1) Always align based on the left/top most item.
    // (2) It is user-friendly that the last item shown in the
    // current window is shown at the begining of next window.
    // Otherwise if half of the last item is cut by the window,
    // it will have no chance to display entirely.
    // (3) Consider that item size probably be different, we
    // have calculate pageIndex by size rather than item index,
    // and we can not get page index directly by division.
    // (4) The window is to narrow to contain more than
    // one item, we should make sure that the page can be fliped.
    for (var i = targetItemIndex + 1, winStartItemInfo = targetItemInfo, winEndItemInfo = targetItemInfo, currItemInfo = null; i <= itemCount; ++i) {
      currItemInfo = getItemInfo(children[i]);
      if (
      // Half of the last item is out of the window.
      !currItemInfo && winEndItemInfo.e > winStartItemInfo.s + containerRectSize
      // If the current item does not intersect with the window, the new page
      // can be started at the current item or the last item.
      || currItemInfo && !intersect(currItemInfo, winStartItemInfo.s)) {
        if (winEndItemInfo.i > winStartItemInfo.i) {
          winStartItemInfo = winEndItemInfo;
        } else {
          // e.g., when page size is smaller than item size.
          winStartItemInfo = currItemInfo;
        }
        if (winStartItemInfo) {
          if (result.pageNextDataIndex == null) {
            result.pageNextDataIndex = winStartItemInfo.i;
          }
          ++result.pageCount;
        }
      }
      winEndItemInfo = currItemInfo;
    }
    for (var i = targetItemIndex - 1, winStartItemInfo = targetItemInfo, winEndItemInfo = targetItemInfo, currItemInfo = null; i >= -1; --i) {
      currItemInfo = getItemInfo(children[i]);
      if (
      // If the the end item does not intersect with the window started
      // from the current item, a page can be settled.
      (!currItemInfo || !intersect(winEndItemInfo, currItemInfo.s)
      // e.g., when page size is smaller than item size.
      ) && winStartItemInfo.i < winEndItemInfo.i) {
        winEndItemInfo = winStartItemInfo;
        if (result.pagePrevDataIndex == null) {
          result.pagePrevDataIndex = winStartItemInfo.i;
        }
        ++result.pageCount;
        ++result.pageIndex;
      }
      winStartItemInfo = currItemInfo;
    }
    return result;
    function getItemInfo(el) {
      if (el) {
        var itemRect = el.getBoundingRect();
        var start = itemRect[xy] + el[xy];
        return {
          s: start,
          e: start + itemRect[wh],
          i: el.__legendDataIndex
        };
      }
    }
    function intersect(itemInfo, winStart) {
      return itemInfo.e >= winStart && itemInfo.s <= winStart + containerRectSize;
    }
  };
  ScrollableLegendView.prototype._findTargetItemIndex = function (targetDataIndex) {
    if (!this._showController) {
      return 0;
    }
    var index;
    var contentGroup = this.getContentGroup();
    var defaultIndex;
    contentGroup.eachChild(function (child, idx) {
      var legendDataIdx = child.__legendDataIndex;
      // FIXME
      // If the given targetDataIndex (from model) is illegal,
      // we use defaultIndex. But the index on the legend model and
      // action payload is still illegal. That case will not be
      // changed until some scenario requires.
      if (defaultIndex == null && legendDataIdx != null) {
        defaultIndex = idx;
      }
      if (legendDataIdx === targetDataIndex) {
        index = idx;
      }
    });
    return index != null ? index : defaultIndex;
  };
  ScrollableLegendView.type = 'legend.scroll';
  return ScrollableLegendView;
}(LegendView);

export { ScrollableLegendView as default };
