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| define(["require", "exports", "@syncfusion/ej2-base", "../services/row-model-generator", "../services/group-model-generator"], function (require, exports, ej2_base_1, row_model_generator_1, group_model_generator_1) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var VirtualRowModelGenerator = (function () {
function VirtualRowModelGenerator(parent) {
this.cOffsets = {};
this.cache = {};
this.data = {};
this.groups = {};
this.parent = parent;
this.model = this.parent.pageSettings;
this.rowModelGenerator = this.parent.allowGrouping ? new group_model_generator_1.GroupModelGenerator(this.parent) : new row_model_generator_1.RowModelGenerator(this.parent);
}
VirtualRowModelGenerator.prototype.generateRows = function (data, notifyArgs) {
var _this = this;
var info = notifyArgs.virtualInfo = notifyArgs.virtualInfo || this.getData();
var xAxis = info.sentinelInfo && info.sentinelInfo.axis === 'X';
var page = !xAxis && info.loadNext && !info.loadSelf ? info.nextInfo.page : info.page;
var result = [];
var center = ~~(this.model.pageSize / 2);
var indexes = this.getBlockIndexes(page);
var loadedBlocks = [];
this.checkAndResetCache(notifyArgs.requestType);
if (this.parent.enableColumnVirtualization) {
info.blockIndexes.forEach(function (value) {
if (_this.isBlockAvailable(value)) {
_this.cache[value] = _this.rowModelGenerator.refreshRows(_this.cache[value]);
}
});
}
info.blockIndexes.forEach(function (value) {
if (!_this.isBlockAvailable(value)) {
var rows = _this.rowModelGenerator.generateRows(data, {
virtualInfo: info, startIndex: _this.getStartIndex(value, data)
});
var median = ~~Math.max(rows.length, _this.model.pageSize) / 2;
Eif (!_this.isBlockAvailable(indexes[0])) {
_this.cache[indexes[0]] = rows.slice(0, median);
}
Eif (!_this.isBlockAvailable(indexes[1])) {
_this.cache[indexes[1]] = rows.slice(median);
}
}
if (_this.parent.groupSettings.columns.length && !xAxis && _this.cache[value]) {
_this.cache[value] = _this.updateGroupRow(_this.cache[value], value);
}
result.push.apply(result, _this.cache[value]);
Eif (_this.isBlockAvailable(value)) {
loadedBlocks.push(value);
}
});
info.blockIndexes = loadedBlocks;
var grouping = 'records';
if (this.parent.allowGrouping) {
this.parent.currentViewData[grouping] = result.map(function (m) { return m.data; });
}
else {
this.parent.currentViewData = result.map(function (m) { return m.data; });
}
return result;
};
VirtualRowModelGenerator.prototype.getBlockIndexes = function (page) {
return [page + (page - 1), page * 2];
};
VirtualRowModelGenerator.prototype.getPage = function (block) {
return block % 2 === 0 ? block / 2 : (block + 1) / 2;
};
VirtualRowModelGenerator.prototype.isBlockAvailable = function (value) {
return value in this.cache;
};
VirtualRowModelGenerator.prototype.getData = function () {
return {
page: this.model.currentPage,
blockIndexes: this.getBlockIndexes(this.model.currentPage),
direction: 'down',
columnIndexes: this.parent.getColumnIndexesInView()
};
};
VirtualRowModelGenerator.prototype.getStartIndex = function (blk, data, full) {
if (full === void 0) { full = true; }
var page = this.getPage(blk);
var even = blk % 2 === 0;
var index = (page - 1) * this.model.pageSize;
return full || !even ? index : index + ~~(this.model.pageSize / 2);
};
VirtualRowModelGenerator.prototype.getColumnIndexes = function (content) {
var _this = this;
if (content === void 0) { content = this.parent.getHeaderContent().firstChild; }
var indexes = [];
var sLeft = content.scrollLeft | 0;
var keys = Object.keys(this.cOffsets);
var cWidth = content.getBoundingClientRect().width;
sLeft = Math.min(this.cOffsets[keys.length - 1] - cWidth, sLeft);
var calWidth = ej2_base_1.Browser.isDevice ? 2 * cWidth : cWidth / 2;
var left = sLeft + cWidth + (sLeft === 0 ? calWidth : 0);
keys.some(function (offset, indx, input) {
var iOffset = Number(offset);
var offsetVal = _this.cOffsets[offset];
var border = sLeft - calWidth <= offsetVal && left + calWidth >= offsetVal;
if (border) {
indexes.push(iOffset);
}
return left + calWidth < offsetVal;
});
return indexes;
};
VirtualRowModelGenerator.prototype.checkAndResetCache = function (action) {
var clear = ['paging', 'refresh', 'sorting', 'filtering', 'searching', 'grouping', 'ungrouping', 'reorder']
.some(function (value) { return action === value; });
if (clear) {
this.cache = {};
this.data = {};
this.groups = {};
}
return clear;
};
VirtualRowModelGenerator.prototype.refreshColOffsets = function () {
var _this = this;
var col = 0;
this.cOffsets = {};
var gLen = this.parent.groupSettings.columns.length;
var cols = this.parent.columns;
var cLen = cols.length;
var isVisible = function (column) { return column.visible &&
(!_this.parent.groupSettings.showGroupedColumn ? _this.parent.groupSettings.columns.indexOf(column.field) < 0 : column.visible); };
this.parent.groupSettings.columns.forEach(function (c, n) { return _this.cOffsets[n] = (_this.cOffsets[n - 1] | 0) + 30; });
Array.apply(null, Array(cLen)).map(function () { return col++; }).forEach(function (block, i) {
block = block + gLen;
_this.cOffsets[block] = (_this.cOffsets[block - 1] | 0) + (isVisible(cols[i]) ? parseInt(cols[i].width, 10) : 0);
});
};
VirtualRowModelGenerator.prototype.updateGroupRow = function (current, block) {
var _this = this;
var currentFirst = current[0];
var rows = [];
Object.keys(this.cache).forEach(function (key) {
if (Number(key) < block) {
rows = rows.concat(_this.cache[key]);
}
});
if ((currentFirst && currentFirst.isDataRow) || block % 2 === 0) {
return current;
}
return this.iterateGroup(current, rows);
};
VirtualRowModelGenerator.prototype.iterateGroup = function (current, rows) {
var currentFirst = current[0];
var offset = 0;
if (currentFirst && currentFirst.isDataRow) {
return current;
}
var isPresent = current.some(function (row) {
return rows.some(function (oRow, index) {
var res = oRow && oRow.data.field !== undefined && oRow.data.field === row.data.field &&
oRow.data.key === row.data.key;
Eif (res) {
offset = index;
}
return res;
});
});
if (isPresent) {
current.shift();
current = this.iterateGroup(current, rows.slice(offset));
}
return current;
};
VirtualRowModelGenerator.prototype.getRows = function () {
var _this = this;
var rows = [];
Object.keys(this.cache).forEach(function (key) { return rows = rows.concat(_this.cache[key]); });
return rows;
};
return VirtualRowModelGenerator;
}());
exports.VirtualRowModelGenerator = VirtualRowModelGenerator;
});
|