systelab-components
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systelab-components is a set of components that use wide accepted and adopted standard technologies like Angular and Bootstrap, as well as other popular libraries. Please read the ATTRIBUTION.md file for a complete list of dependencies.
85 lines • 13.6 kB
JavaScript
export function initializeCalculatedGridState(autoSizeColumnsToContent = true) {
return {
minRow: -1,
maxRow: -1,
top: undefined,
calculatedDisplayedCols: [],
autoSizeColumnsToContent: autoSizeColumnsToContent
};
}
export class AutosizeGridHelper {
static itWasPreviouslyCalculated(event, gridState, gridOptions) {
let previouslyCalculated = false;
if (event?.direction === 'vertical') {
previouslyCalculated = this.itWasVerticallyCalculated(gridState, gridOptions, event);
}
else if (event?.direction === 'horizontal') {
previouslyCalculated = this.itWasHorizontallyCalculated(gridState, gridOptions);
}
return previouslyCalculated;
}
static itWasVerticallyCalculated(gridState, gridOptions, event) {
if (!event.top) {
gridState.top = event.top;
}
let previouslyCalculated = false;
//Scrolling up
if (event.top <= gridState.top && gridState.minRow <= gridOptions.api.getFirstDisplayedRow()) {
previouslyCalculated = true;
}
//Scrolling down
if (event.top >= gridState.top && gridState.maxRow >= gridOptions.api.getLastDisplayedRow()) {
previouslyCalculated = true;
}
gridState.top = event.top;
gridState.minRow = gridOptions.api.getFirstDisplayedRow();
gridState.maxRow = gridOptions.api.getLastDisplayedRow();
return previouslyCalculated;
}
static itWasHorizontallyCalculated(gridState, gridOptions) {
const displayedColumns = gridOptions.columnApi.getAllDisplayedColumns();
const newColumnOnDisplay = displayedColumns.find(col => !gridState.calculatedDisplayedCols.includes(col.getColId()));
gridState.calculatedDisplayedCols = displayedColumns.map(col => col.getColId());
return !newColumnOnDisplay;
}
static doAutoSizeManagement(calculatedGridState, gridOptions, event) {
if (!event || !calculatedGridState) {
calculatedGridState = initializeCalculatedGridState(calculatedGridState?.autoSizeColumnsToContent);
}
if (calculatedGridState.autoSizeColumnsToContent) {
const previouslyCalculated = this.itWasPreviouslyCalculated(event, calculatedGridState, gridOptions);
if (!previouslyCalculated) {
gridOptions.columnApi.getColumns()
.forEach(col => {
if (!col.getColDef().suppressSizeToFit) {
gridOptions.columnApi.autoSizeColumn(col.getColId(), true);
}
});
}
}
else {
this.sizeColumnsToFit(gridOptions);
}
}
//This is to reduce the size of the last autosized column by 1 pixel.
// This is necessary because some browsers do not correctly calculate
// the available grid size when it is not an integer.
// For example, if the actual available size is 99.6, some browsers return 99.6
// for the parent size (viewport) and 100 for the grid size (container). And now,
// since the container is bigger than its viewport, an horizontal scrollbar appears.
// Additionally, as the size in difference is less than 1 (caused because of
// rounding), the scrollbar is empty, having no bar handle.
//This is only necessary for sizeColumnsToFit, autoSizeColumns does it correctly.
static sizeColumnsToFit(gridOptions) {
gridOptions.api.sizeColumnsToFit();
const cols = gridOptions.columnApi.getColumns();
for (let i = cols.length - 1; i >= 0; i--) {
const col = cols[i];
if (!col.getColDef().suppressSizeToFit && col.getActualWidth() > 1) {
gridOptions.columnApi.setColumnWidth(col, col.getActualWidth() - 1);
break;
}
}
}
}
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{ Column, GridOptions } from 'ag-grid-community';\n\nexport interface CalculatedGridState {\n\tminRow: number;\n\tmaxRow: number;\n\ttop: number | undefined;\n\tcalculatedDisplayedCols: string[];\n\tautoSizeColumnsToContent: boolean;\n}\n\nexport function initializeCalculatedGridState(autoSizeColumnsToContent: boolean = true): CalculatedGridState {\n\treturn {\n\t\tminRow: -1,\n\t\tmaxRow: -1,\n\t\ttop: undefined,\n\t\tcalculatedDisplayedCols: [],\n\t\tautoSizeColumnsToContent: autoSizeColumnsToContent\n\t};\n}\n\nexport class AutosizeGridHelper {\n\n\tprivate static itWasPreviouslyCalculated(event: any, gridState: CalculatedGridState, gridOptions: GridOptions) {\n\t\tlet previouslyCalculated = false;\n\t\tif (event?.direction === 'vertical') {\n\t\t\tpreviouslyCalculated = this.itWasVerticallyCalculated(gridState, gridOptions, event);\n\t\t} else if (event?.direction === 'horizontal') {\n\t\t\tpreviouslyCalculated = this.itWasHorizontallyCalculated(gridState, gridOptions);\n\t\t}\n\t\treturn previouslyCalculated;\n\t}\n\n\tprivate static itWasVerticallyCalculated(gridState: CalculatedGridState, gridOptions: GridOptions, event: any) {\n\t\tif (!event.top) {\n\t\t\tgridState.top = event.top;\n\t\t}\n\n\t\tlet previouslyCalculated = false;\n\t\t//Scrolling up\n\t\tif (event.top <= gridState.top && gridState.minRow <= gridOptions.api.getFirstDisplayedRow()) {\n\t\t\tpreviouslyCalculated = true;\n\t\t}\n\n\t\t//Scrolling down\n\t\tif (event.top >= gridState.top && gridState.maxRow >= gridOptions.api.getLastDisplayedRow()) {\n\t\t\tpreviouslyCalculated = true;\n\t\t}\n\n\t\tgridState.top = event.top;\n\t\tgridState.minRow = gridOptions.api.getFirstDisplayedRow();\n\t\tgridState.maxRow = gridOptions.api.getLastDisplayedRow();\n\n\t\treturn previouslyCalculated;\n\t}\n\n\tprivate static itWasHorizontallyCalculated(gridState: CalculatedGridState, gridOptions: GridOptions) {\n\t\tconst displayedColumns: Column[] = gridOptions.columnApi.getAllDisplayedColumns();\n\t\tconst newColumnOnDisplay: Column = displayedColumns.find(col => !gridState.calculatedDisplayedCols.includes(col.getColId()));\n\n\t\tgridState.calculatedDisplayedCols = displayedColumns.map(col => col.getColId());\n\t\treturn !newColumnOnDisplay;\n\t}\n\n\tpublic static doAutoSizeManagement(calculatedGridState: CalculatedGridState, gridOptions: GridOptions, event?: any) {\n\t\tif(!event || !calculatedGridState) {\n\t\t\tcalculatedGridState = initializeCalculatedGridState(calculatedGridState?.autoSizeColumnsToContent);\n\t\t}\n\n\t\tif(calculatedGridState.autoSizeColumnsToContent) {\n\t\t\tconst previouslyCalculated = this.itWasPreviouslyCalculated(event, calculatedGridState, gridOptions);\n\t\t\tif (!previouslyCalculated) {\n\t\t\t\tgridOptions.columnApi.getColumns()\n\t\t\t\t\t.forEach(col => {\n\t\t\t\t\t\tif (!col.getColDef().suppressSizeToFit) {\n\t\t\t\t\t\t\tgridOptions.columnApi.autoSizeColumn(col.getColId(), true);\n\t\t\t\t\t\t}\n\t\t\t\t\t});\n\t\t\t}\n\t\t} else {\n\t\t\tthis.sizeColumnsToFit(gridOptions);\n\t\t}\n\t}\n\n\t//This is to reduce the size of the last autosized column by 1 pixel.\n\t// \tThis is necessary because some browsers do not correctly calculate\n\t// \tthe available grid size when it is not an integer.\n\t//\tFor example, if the actual available size is 99.6, some browsers return 99.6\n\t//\tfor the parent size (viewport) and 100 for the grid size (container). And now,\n\t//\tsince the container is bigger than its viewport, an horizontal scrollbar appears.\n\t//\tAdditionally, as the size in difference is less than 1 (caused because of\n\t//\trounding), the scrollbar is empty, having no bar handle.\n\t//This is only necessary for sizeColumnsToFit, autoSizeColumns does it correctly.\n\tpublic static sizeColumnsToFit(gridOptions: GridOptions) {\n\t\tgridOptions.api.sizeColumnsToFit();\n\n\t\tconst cols: Column[] = gridOptions.columnApi.getColumns();\n\t\tfor(let i: number = cols.length - 1; i >= 0; i--) {\n\t\t\tconst col: Column = cols[i];\n\t\t\tif(!col.getColDef().suppressSizeToFit && col.getActualWidth() > 1) {\n\t\t\t\tgridOptions.columnApi.setColumnWidth(col, col.getActualWidth() - 1);\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n}\n"]}