2 * Collection of grid related classses and interfaces.
4 import {TemplateRef, EventEmitter, QueryList} from '@angular/core';
5 import {Observable, Subscription} from 'rxjs';
6 import {IdlService, IdlObject} from '@eg/core/idl.service';
7 import {OrgService} from '@eg/core/org.service';
8 import {ServerStoreService} from '@eg/core/server-store.service';
9 import {FormatService} from '@eg/core/format.service';
10 import {Pager} from '@eg/share/util/pager';
11 import {GridFilterControlComponent} from './grid-filter-control.component';
13 const MAX_ALL_ROW_COUNT = 10000;
15 export class GridColumn {
24 // IDL class of the object which contains this field.
25 // Not to be confused with the class of a linked object.
29 datePlusTime: boolean;
31 timezoneContextOrg: number;
32 cellTemplate: TemplateRef<any>;
33 dateOnlyIntervalField: string;
37 isDragTarget: boolean;
39 isFilterable: boolean;
41 isMultiSortable: boolean;
42 disableTooltip: boolean;
43 asyncSupportsEmptyTermClick: boolean;
44 comparator: (valueA: any, valueB: any) => number;
46 // True if the column was automatically generated.
51 filterOperator: string;
52 filterInputDisabled: boolean;
53 filterIncludeOrgAncestors: boolean;
54 filterIncludeOrgDescendants: boolean;
56 flesher: (obj: any, col: GridColumn, item: any) => any;
58 getCellContext(row: any) {
62 userContext: this.cellContext
71 this.isFiltered = false;
72 this.filterValue = undefined;
73 this.filterOperator = '=';
74 this.filterInputDisabled = false;
75 this.filterIncludeOrgAncestors = false;
76 this.filterIncludeOrgDescendants = false;
80 export class GridColumnSet {
81 columns: GridColumn[];
83 indexColumn: GridColumn;
85 isFilterable: boolean;
86 isMultiSortable: boolean;
87 stockVisible: string[];
89 defaultHiddenFields: string[];
90 defaultVisibleFields: string[];
92 constructor(idl: IdlService, idlClass?: string) {
95 this.stockVisible = [];
96 this.idlClass = idlClass;
99 add(col: GridColumn) {
101 this.applyColumnDefaults(col);
103 if (!this.insertColumn(col)) {
104 // Column was rejected as a duplicate.
108 if (col.isIndex) { this.indexColumn = col; }
110 // track which fields are visible on page load.
112 this.stockVisible.push(col.name);
115 this.applyColumnSortability(col);
116 this.applyColumnFilterability(col);
119 // Returns true if the new column was inserted, false otherwise.
120 // Declared columns take precedence over auto-generated columns
121 // when collisions occur.
122 // Declared columns are inserted in front of auto columns.
123 insertColumn(col: GridColumn): boolean {
126 if (this.getColByName(col.name)) {
127 // New auto-generated column conflicts with existing
131 // No collisions. Add to the end of the list
132 this.columns.push(col);
137 // Adding a declared column.
140 for (let idx = 0; idx < this.columns.length; idx++) {
141 const testCol = this.columns[idx];
142 if (testCol.name === col.name) { // match found
143 if (testCol.isAuto) {
144 // new column takes precedence, remove the existing column.
145 this.columns.splice(idx, 1);
148 // New column does not take precedence. Avoid
155 // Delcared columns are inserted just before the first auto-column
156 for (let idx = 0; idx < this.columns.length; idx++) {
157 const testCol = this.columns[idx];
158 if (testCol.isAuto) {
160 this.columns.unshift(col);
162 this.columns.splice(idx, 0, col);
168 // No insertion point found. Toss the new column on the end.
169 this.columns.push(col);
173 getColByName(name: string): GridColumn {
174 return this.columns.filter(c => c.name === name)[0];
177 idlInfoFromDotpath(dotpath: string): any {
178 if (!dotpath || !this.idlClass) { return null; }
183 let nextIdlClass = this.idl.classes[this.idlClass];
185 const pathParts = dotpath.split(/\./);
187 for (let i = 0; i < pathParts.length; i++) {
189 const part = pathParts[i];
190 idlParent = idlField;
191 idlClass = nextIdlClass;
192 idlField = idlClass.field_map[part];
194 if (!idlField) { return null; } // invalid IDL path
196 if (i === pathParts.length - 1) {
197 // No more links to process.
201 if (idlField['class'] && (
202 idlField.datatype === 'link' ||
203 idlField.datatype === 'org_unit')) {
204 // The link class on the current field refers to the
205 // class of the link destination, not the current field.
206 // Mark it for processing during the next iteration.
207 nextIdlClass = this.idl.classes[idlField['class']];
212 idlParent: idlParent,
220 this.columns.forEach(col => {
224 col.visible = this.stockVisible.includes(col.name);
228 applyColumnDefaults(col: GridColumn) {
230 if (!col.idlFieldDef) {
231 const idlInfo = this.idlInfoFromDotpath(col.path || col.name);
233 col.idlFieldDef = idlInfo.idlField;
234 col.idlClass = idlInfo.idlClass.name;
236 col.datatype = col.idlFieldDef.datatype;
239 col.label = col.idlFieldDef.label || col.idlFieldDef.name;
244 if (!col.name) { col.name = col.path; }
245 if (!col.flex) { col.flex = 2; }
246 if (!col.align) { col.align = 'left'; }
247 if (!col.label) { col.label = col.name; }
248 if (!col.datatype) { col.datatype = 'text'; }
250 col.visible = !col.hidden;
253 applyColumnSortability(col: GridColumn) {
254 // column sortability defaults to the sortability of the column set.
255 if (col.isSortable === undefined && this.isSortable) {
256 col.isSortable = true;
259 if (col.isMultiSortable === undefined && this.isMultiSortable) {
260 col.isMultiSortable = true;
263 if (col.isMultiSortable) {
264 col.isSortable = true;
267 applyColumnFilterability(col: GridColumn) {
268 // column filterability defaults to the afilterability of the column set.
269 if (col.isFilterable === undefined && this.isFilterable) {
270 col.isFilterable = true;
274 displayColumns(): GridColumn[] {
275 return this.columns.filter(c => c.visible);
278 // Sorted visible columns followed by sorted non-visible columns.
279 // Note we don't sort this.columns directly as it would impact
280 // grid column display ordering.
281 sortForColPicker(): GridColumn[] {
282 const visible = this.columns.filter(c => c.visible);
283 const invisible = this.columns.filter(c => !c.visible);
285 visible.sort((a, b) => a.label < b.label ? -1 : 1);
286 invisible.sort((a, b) => a.label < b.label ? -1 : 1);
288 return visible.concat(invisible);
291 insertBefore(source: GridColumn, target: GridColumn) {
294 this.columns.forEach((col, idx) => {
295 if (col.name === target.name) { targetIdx = idx; }});
297 this.columns.forEach((col, idx) => {
298 if (col.name === source.name) { sourceIdx = idx; }});
300 if (sourceIdx >= 0) {
301 this.columns.splice(sourceIdx, 1);
304 this.columns.splice(targetIdx, 0, source);
307 // Move visible columns to the front of the list.
308 moveVisibleToFront() {
309 const newCols = this.displayColumns();
310 this.columns.forEach(col => {
311 if (!col.visible) { newCols.push(col); }});
312 this.columns = newCols;
315 moveColumn(col: GridColumn, diff: number) {
316 let srcIdx, targetIdx;
318 this.columns.forEach((c, i) => {
319 if (c.name === col.name) { srcIdx = i; }
322 targetIdx = srcIdx + diff;
325 } else if (targetIdx >= this.columns.length) {
326 // Target index follows the last visible column.
328 this.columns.forEach((c, idx) => {
329 if (c.visible) { lastVisible = idx; }
332 // When moving a column (down) causes one or more
333 // visible columns to shuffle forward, our column
334 // moves into the slot of the last visible column.
335 // Otherwise, put it into the slot directly following
336 // the last visible column.
337 targetIdx = srcIdx <= lastVisible ? lastVisible : lastVisible + 1;
340 // Splice column out of old position, insert at new position.
341 this.columns.splice(srcIdx, 1);
342 this.columns.splice(targetIdx, 0, col);
345 compileSaveObject(): GridColumnPersistConf[] {
346 // only store information about visible columns.
347 // scrunch the data down to just the needed info.
348 return this.displayColumns().map(col => {
349 const c: GridColumnPersistConf = {name : col.name};
350 if (col.align !== 'left') { c.align = col.align; }
351 if (col.flex !== 2) { c.flex = Number(col.flex); }
352 if (Number(col.sort)) { c.sort = Number(col.sort); }
357 applyColumnSettings(conf: GridColumnPersistConf[]) {
359 if (!conf || conf.length === 0) {
360 // No configuration is available, but we have a list of
361 // fields to show or hide by default
363 if (this.defaultVisibleFields) {
364 this.columns.forEach(col => {
365 if (this.defaultVisibleFields.includes(col.name)) {
372 } else if (this.defaultHiddenFields) {
373 this.defaultHiddenFields.forEach(name => {
374 const col = this.getColByName(name);
386 conf.forEach(colConf => {
387 const col = this.getColByName(colConf.name);
388 if (!col) { return; } // no such column in this grid.
391 if (colConf.align) { col.align = colConf.align; }
392 if (colConf.flex) { col.flex = Number(colConf.flex); }
393 if (colConf.sort) { col.sort = Number(colConf.sort); }
395 // Add to new columns array, avoid dupes.
396 if (newCols.filter(c => c.name === col.name).length === 0) {
401 // columns which are not expressed within the saved
402 // configuration are marked as non-visible and
403 // appended to the end of the new list of columns.
404 this.columns.forEach(c => {
405 if (conf.filter(cf => cf.name === c.name).length === 0) {
411 this.columns = newCols;
415 // Maps colunm names to functions which return plain text values for
416 // each mapped column on a given row. This is primarily useful for
417 // generating print-friendly content for grid cells rendered via
420 // USAGE NOTE: Since a cellTemplate can be passed arbitrary context
421 // but a GridCellTextGenerator only gets the row object,
422 // if it's important to include content that's not available
423 // by default in the row object, you may want to stick
424 // it in the row object as an additional attribute.
426 export interface GridCellTextGenerator {
427 [columnName: string]: (row: any) => string;
430 export class GridRowSelector {
431 indexes: {[string: string]: boolean};
433 // Track these so we can emit the selectionChange event
434 // only when the selection actually changes.
435 previousSelection: string[] = [];
437 // Emits the selected indexes on selection change
438 selectionChange: EventEmitter<string[]> = new EventEmitter<string[]>();
444 // Returns true if all of the requested indexes exist in the selector.
445 contains(index: string | string[]): boolean {
446 const indexes = [].concat(index);
447 for (let i = 0; i < indexes.length; i++) { // early exit
448 if (!this.indexes[indexes[i]]) {
456 const keys = this.selected();
458 if (keys.length === this.previousSelection.length &&
459 this.contains(this.previousSelection)) {
460 return; // No change has occurred
463 this.previousSelection = keys;
464 this.selectionChange.emit(keys);
467 select(index: string | string[]) {
468 const indexes = [].concat(index);
469 indexes.forEach(i => this.indexes[i] = true);
473 deselect(index: string | string[]) {
474 const indexes = [].concat(index);
475 indexes.forEach(i => delete this.indexes[i]);
479 toggle(index: string) {
480 if (this.indexes[index]) {
481 this.deselect(index);
487 selected(): string[] {
488 return Object.keys(this.indexes);
492 return this.selected().length === 0;
501 export interface GridRowFlairEntry {
502 icon: string; // name of material icon
503 title?: string; // tooltip string
506 export class GridColumnPersistConf {
513 export class GridPersistConf {
516 columns: GridColumnPersistConf[];
517 hideToolbarActions: string[];
520 export class GridContext {
525 isFilterable: boolean;
526 stickyGridHeader: boolean;
527 isMultiSortable: boolean;
528 useLocalSort: boolean;
530 disableMultiSelect: boolean;
531 disableSelect: boolean;
532 dataSource: GridDataSource;
533 columnSet: GridColumnSet;
534 autoGeneratedColumnOrder: string;
535 rowSelector: GridRowSelector;
536 toolbarLabel: string;
537 toolbarButtons: GridToolbarButton[];
538 toolbarCheckboxes: GridToolbarCheckbox[];
539 toolbarActions: GridToolbarAction[];
540 lastSelectedIndex: any;
541 pageChanges: Subscription;
542 rowFlairIsEnabled: boolean;
543 rowFlairCallback: (row: any) => GridRowFlairEntry;
544 rowClassCallback: (row: any) => string;
545 cellClassCallback: (row: any, col: GridColumn) => string;
546 defaultVisibleFields: string[];
547 defaultHiddenFields: string[];
548 ignoredFields: string[];
549 overflowCells: boolean;
550 disablePaging: boolean;
551 showDeclaredFieldsOnly: boolean;
552 cellTextGenerator: GridCellTextGenerator;
554 // Allow calling code to know when the select-all-rows-in-page
555 // action has occurred.
556 selectRowsInPageEmitter: EventEmitter<void>;
558 filterControls: QueryList<GridFilterControlComponent>;
560 // Services injected by our grid component
563 store: ServerStoreService;
564 format: FormatService;
569 store: ServerStoreService,
570 format: FormatService) {
575 this.format = format;
576 this.pager = new Pager();
577 this.rowSelector = new GridRowSelector();
578 this.toolbarButtons = [];
579 this.toolbarCheckboxes = [];
580 this.toolbarActions = [];
584 this.selectRowsInPageEmitter = new EventEmitter<void>();
585 this.columnSet = new GridColumnSet(this.idl, this.idlClass);
586 this.columnSet.isSortable = this.isSortable === true;
587 this.columnSet.isFilterable = this.isFilterable === true;
588 this.columnSet.isMultiSortable = this.isMultiSortable === true;
589 this.columnSet.defaultHiddenFields = this.defaultHiddenFields;
590 this.columnSet.defaultVisibleFields = this.defaultVisibleFields;
591 if (!this.pager.limit) {
592 this.pager.limit = this.disablePaging ? MAX_ALL_ROW_COUNT : 10;
594 this.generateColumns();
597 // Load initial settings and data.
599 this.applyGridConfig()
600 .then(ok => this.dataSource.requestPage(this.pager))
601 .then(ok => this.listenToPager());
608 applyGridConfig(): Promise<void> {
609 return this.getGridConfig(this.persistKey)
613 columns = conf.columns;
614 if (conf.limit && !this.disablePaging) {
615 this.pager.limit = conf.limit;
617 this.applyToolbarActionVisibility(conf.hideToolbarActions);
620 // This is called regardless of the presence of saved
621 // settings so defaults can be applied.
622 this.columnSet.applyColumnSettings(columns);
626 applyToolbarActionVisibility(hidden: string[]) {
627 if (!hidden || hidden.length === 0) { return; }
630 this.toolbarActions.forEach(action => {
631 if (action.isGroup) {
633 } else if (!action.isSeparator) {
634 action.hidden = hidden.includes(action.label);
638 // If all actions in a group are hidden, hide the group as well.
639 // Note the group may be marked as hidden in the configuration,
640 // but the addition of new entries within a group should cause
641 // it to be visible again.
642 groups.forEach(group => {
643 const visible = this.toolbarActions
644 .filter(action => action.group === group.label && !action.hidden);
645 group.hidden = visible.length === 0;
650 // Give the UI time to settle before reloading grid data.
651 // This can help when data retrieval depends on a value
652 // getting modified by an angular digest cycle.
655 this.dataSource.reset();
656 this.dataSource.requestPage(this.pager);
660 reloadWithoutPagerReset() {
662 this.dataSource.reset();
663 this.dataSource.requestPage(this.pager);
667 // Sort the existing data source instead of requesting sorted
668 // data from the client. Reset pager to page 1. As with reload(),
669 // give the client a chance to setting before redisplaying.
673 this.sortLocalData();
674 this.dataSource.requestPage(this.pager);
678 // Subscribe or unsubscribe to page-change events from the pager.
680 if (this.pageChanges) { return; }
681 this.pageChanges = this.pager.onChange$.subscribe(
682 val => this.dataSource.requestPage(this.pager));
686 if (!this.pageChanges) { return; }
687 this.pageChanges.unsubscribe();
688 this.pageChanges = null;
691 // Sort data in the data source array
694 const sortDefs = this.dataSource.sort.map(sort => {
695 const column = this.columnSet.getColByName(sort.name);
703 if (!def.col.comparator) {
704 switch (def.col.datatype) {
708 def.col.comparator = (a, b) => {
711 if (a < b) { return -1; }
712 if (a > b) { return 1; }
717 def.col.comparator = (a, b) => {
718 if (a < b) { return -1; }
719 if (a > b) { return 1; }
728 this.dataSource.data.sort((rowA, rowB) => {
730 for (let idx = 0; idx < sortDefs.length; idx++) {
731 const sortDef = sortDefs[idx];
733 const valueA = this.getRowColumnValue(rowA, sortDef.col);
734 const valueB = this.getRowColumnValue(rowB, sortDef.col);
736 if (valueA === '' && valueB === '') { continue; }
737 if (valueA === '' && valueB !== '') { return 1; }
738 if (valueA !== '' && valueB === '') { return -1; }
740 const diff = sortDef.col.comparator(valueA, valueB);
741 if (diff === 0) { continue; }
743 return sortDef.dir === 'DESC' ? -diff : diff;
746 return 0; // No differences found.
750 getRowIndex(row: any): any {
751 const col = this.columnSet.indexColumn;
753 throw new Error('grid index column required');
755 return this.getRowColumnValue(row, col);
758 // Returns position in the data source array of the row with
759 // the provided index.
760 getRowPosition(index: any): number {
761 // for-loop for early exit
762 for (let idx = 0; idx < this.dataSource.data.length; idx++) {
763 const row = this.dataSource.data[idx];
764 if (row !== undefined && index === this.getRowIndex(row)) {
770 // Return the row with the provided index.
771 getRowByIndex(index: any): any {
772 for (let idx = 0; idx < this.dataSource.data.length; idx++) {
773 const row = this.dataSource.data[idx];
774 if (row !== undefined && index === this.getRowIndex(row)) {
780 // Returns all selected rows, regardless of whether they are
781 // currently visible in the grid display.
782 // De-selects previously selected rows which are no longer
783 // present in the grid.
784 getSelectedRows(): any[] {
788 this.rowSelector.selected().forEach(index => {
789 const row = this.getRowByIndex(index);
797 this.rowSelector.deselect(deleted);
801 rowIsSelected(row: any): boolean {
802 const index = this.getRowIndex(row);
803 return this.rowSelector.selected().filter(
808 getRowColumnBareValue(row: any, col: GridColumn): any {
809 if (col.name in row) {
810 return this.getObjectFieldValue(row, col.name);
811 } else if (col.path) {
812 return this.nestedItemFieldValue(row, col);
816 getRowColumnValue(row: any, col: GridColumn): any {
817 const val = this.getRowColumnBareValue(row, col);
819 if (col.datatype === 'bool') {
820 // Avoid string-ifying bools so we can use an <eg-bool/>
821 // in the grid template.
826 const intField = col.dateOnlyIntervalField;
829 this.columnSet.columns.filter(c => c.path === intField)[0];
831 interval = this.getRowColumnBareValue(row, intCol);
835 return this.format.transform({
837 idlClass: col.idlClass,
838 idlField: col.idlFieldDef ? col.idlFieldDef.name : col.name,
839 datatype: col.datatype,
840 datePlusTime: Boolean(col.datePlusTime),
841 timezoneContextOrg: Number(col.timezoneContextOrg),
842 dateOnlyInterval: interval
846 getObjectFieldValue(obj: any, name: string): any {
847 if (typeof obj[name] === 'function') {
854 nestedItemFieldValue(obj: any, col: GridColumn): string {
858 const original = obj;
859 const steps = col.path.split('.');
861 for (let i = 0; i < steps.length; i++) {
862 const step = steps[i];
864 if (obj === null || obj === undefined || typeof obj !== 'object') {
865 // We have run out of data to step through before
866 // reaching the end of the path. Conclude fleshing via
867 // callback if provided then exit.
868 if (col.flesher && obj !== undefined) {
869 return col.flesher(obj, col, original);
874 const class_ = obj.classname;
875 if (class_ && (idlClassDef = this.idl.classes[class_])) {
876 idlField = idlClassDef.field_map[step];
879 obj = this.getObjectFieldValue(obj, step);
882 // We found a nested IDL object which may or may not have
883 // been configured as a top-level column. Flesh the column
884 // metadata with our newly found IDL info.
887 col.datatype = idlField.datatype;
889 if (!col.idlFieldDef) {
890 idlField = col.idlFieldDef;
893 col.idlClass = idlClassDef.name;
896 col.label = idlField.label || idlField.name;
904 getColumnTextContent(row: any, col: GridColumn): string {
905 if (this.columnHasTextGenerator(col)) {
906 const str = this.cellTextGenerator[col.name](row);
907 return (str === null || str === undefined) ? '' : str;
909 if (col.cellTemplate) {
910 return ''; // avoid 'undefined' values
912 return this.getRowColumnValue(row, col);
917 selectOneRow(index: any) {
918 this.rowSelector.clear();
919 this.rowSelector.select(index);
920 this.lastSelectedIndex = index;
923 selectMultipleRows(indexes: any[]) {
924 this.rowSelector.clear();
925 this.rowSelector.select(indexes);
926 this.lastSelectedIndex = indexes[indexes.length - 1];
929 // selects or deselects an item, without affecting the others.
930 // returns true if the item is selected; false if de-selected.
931 toggleSelectOneRow(index: any) {
932 if (this.rowSelector.contains(index)) {
933 this.rowSelector.deselect(index);
937 this.rowSelector.select(index);
938 this.lastSelectedIndex = index;
942 selectRowByPos(pos: number) {
943 const row = this.dataSource.data[pos];
945 this.selectOneRow(this.getRowIndex(row));
949 selectPreviousRow() {
950 if (!this.lastSelectedIndex) { return; }
951 const pos = this.getRowPosition(this.lastSelectedIndex);
952 if (pos === this.pager.offset) {
953 this.toPrevPage().then(ok => this.selectLastRow(), err => {});
955 this.selectRowByPos(pos - 1);
960 if (!this.lastSelectedIndex) { return; }
961 const pos = this.getRowPosition(this.lastSelectedIndex);
962 if (pos === (this.pager.offset + this.pager.limit - 1)) {
963 this.toNextPage().then(ok => this.selectFirstRow(), err => {});
965 this.selectRowByPos(pos + 1);
970 // Select the previous row in addition to any currently selected row.
971 // However, if the previous row is already selected, assume the user
972 // has reversed direction and now wants to de-select the last selected row.
973 selectMultiRowsPrevious() {
974 if (!this.lastSelectedIndex) { return; }
975 const pos = this.getRowPosition(this.lastSelectedIndex);
976 const selectedIndexes = this.rowSelector.selected();
978 const promise = // load the previous page of data if needed
979 (pos === this.pager.offset) ? this.toPrevPage() : Promise.resolve();
983 const row = this.dataSource.data[pos - 1];
984 const newIndex = this.getRowIndex(row);
985 if (selectedIndexes.filter(i => i === newIndex).length > 0) {
986 // Prev row is already selected. User is reversing direction.
987 this.rowSelector.deselect(this.lastSelectedIndex);
988 this.lastSelectedIndex = newIndex;
990 this.selectMultipleRows(selectedIndexes.concat(newIndex));
997 // Select all rows between the previously selected row and
998 // the provided row, including the provided row.
999 // This is additive only -- rows are never de-selected.
1000 selectRowRange(index: any) {
1002 if (!this.lastSelectedIndex) {
1003 this.selectOneRow(index);
1007 const next = this.getRowPosition(index);
1008 const prev = this.getRowPosition(this.lastSelectedIndex);
1009 const start = Math.min(prev, next);
1010 const end = Math.max(prev, next);
1012 for (let idx = start; idx <= end; idx++) {
1013 const row = this.dataSource.data[idx];
1015 this.rowSelector.select(this.getRowIndex(row));
1019 this.lastSelectedIndex = index;
1023 // Select the next row in addition to any currently selected row.
1024 // However, if the next row is already selected, assume the user
1025 // has reversed direction and wants to de-select the last selected row.
1026 selectMultiRowsNext() {
1027 if (!this.lastSelectedIndex) { return; }
1028 const pos = this.getRowPosition(this.lastSelectedIndex);
1029 const selectedIndexes = this.rowSelector.selected();
1031 const promise = // load the next page of data if needed
1032 (pos === (this.pager.offset + this.pager.limit - 1)) ?
1033 this.toNextPage() : Promise.resolve();
1037 const row = this.dataSource.data[pos + 1];
1038 const newIndex = this.getRowIndex(row);
1039 if (selectedIndexes.filter(i => i === newIndex).length > 0) {
1040 // Next row is already selected. User is reversing direction.
1041 this.rowSelector.deselect(this.lastSelectedIndex);
1042 this.lastSelectedIndex = newIndex;
1044 this.selectMultipleRows(selectedIndexes.concat(newIndex));
1051 getFirstRowInPage(): any {
1052 return this.dataSource.data[this.pager.offset];
1055 getLastRowInPage(): any {
1056 return this.dataSource.data[this.pager.offset + this.pager.limit - 1];
1060 this.selectOneRow(this.getRowIndex(this.getFirstRowInPage()));
1064 this.selectOneRow(this.getRowIndex(this.getLastRowInPage()));
1067 selectRowsInPage() {
1068 const rows = this.dataSource.getPageOfRows(this.pager);
1069 const indexes = rows.map(r => this.getRowIndex(r));
1070 this.rowSelector.select(indexes);
1071 this.selectRowsInPageEmitter.emit();
1074 toPrevPage(): Promise<any> {
1075 if (this.pager.isFirstPage()) {
1076 return Promise.reject('on first');
1078 // temp ignore pager events since we're calling requestPage manually.
1080 this.pager.decrement();
1081 this.listenToPager();
1082 return this.dataSource.requestPage(this.pager);
1085 toNextPage(): Promise<any> {
1086 if (this.pager.isLastPage()) {
1087 return Promise.reject('on last');
1089 // temp ignore pager events since we're calling requestPage manually.
1091 this.pager.increment();
1092 this.listenToPager();
1093 return this.dataSource.requestPage(this.pager);
1096 getAllRows(): Promise<any> {
1097 const pager = new Pager();
1099 pager.limit = MAX_ALL_ROW_COUNT;
1100 return this.dataSource.requestPage(pager);
1103 // Returns a key/value pair object of visible column data as text.
1104 getRowAsFlatText(row: any): any {
1106 this.columnSet.displayColumns().forEach(col => {
1108 this.getColumnTextContent(row, col);
1113 getAllRowsAsText(): Observable<any> {
1114 return Observable.create(observer => {
1115 this.getAllRows().then(ok => {
1116 this.dataSource.data.forEach(row => {
1117 observer.next(this.getRowAsFlatText(row));
1119 observer.complete();
1124 removeFilters(): void {
1125 this.dataSource.filters = {};
1126 this.columnSet.displayColumns().forEach(col => { col.removeFilter(); });
1127 this.filterControls.forEach(ctl => ctl.reset());
1130 filtersSet(): boolean {
1131 return Object.keys(this.dataSource.filters).length > 0;
1134 gridToCsv(): Promise<string> {
1137 const columns = this.columnSet.displayColumns();
1140 columns.forEach(col => {
1141 csvStr += this.valueToCsv(col.label),
1145 csvStr = csvStr.replace(/,$/, '\n');
1147 return new Promise(resolve => {
1148 this.getAllRowsAsText().subscribe(
1150 columns.forEach(col => {
1151 csvStr += this.valueToCsv(row[col.name]);
1154 csvStr = csvStr.replace(/,$/, '\n');
1157 () => resolve(csvStr)
1163 // prepares a string for inclusion within a CSV document
1164 // by escaping commas and quotes and removing newlines.
1165 valueToCsv(str: string): string {
1167 if (!str) { return ''; }
1168 str = str.replace(/\n/g, '');
1169 if (str.match(/\,/) || str.match(/"/)) {
1170 str = str.replace(/"/g, '""');
1171 str = '"' + str + '"';
1177 if (!this.columnSet.idlClass) { return; }
1179 const pkeyField = this.idl.classes[this.columnSet.idlClass].pkey;
1180 const specifiedColumnOrder = this.autoGeneratedColumnOrder ?
1181 this.autoGeneratedColumnOrder.split(/,/) : [];
1183 // generate columns for all non-virtual fields on the IDL class
1184 const fields = this.idl.classes[this.columnSet.idlClass].fields
1185 .filter(field => !field.virtual);
1187 const sortedFields = this.autoGeneratedColumnOrder ?
1188 this.idl.sortIdlFields(fields, this.autoGeneratedColumnOrder.split(/,/)) :
1191 sortedFields.forEach(field => {
1192 if (!this.ignoredFields.filter(ignored => ignored === field.name).length) {
1193 const col = new GridColumn();
1194 col.name = field.name;
1195 col.label = field.label || field.name;
1196 col.idlFieldDef = field;
1197 col.idlClass = this.columnSet.idlClass;
1198 col.datatype = field.datatype;
1199 col.isIndex = (field.name === pkeyField);
1202 if (this.showDeclaredFieldsOnly) {
1206 this.columnSet.add(col);
1211 saveGridConfig(): Promise<any> {
1212 if (!this.persistKey) {
1213 throw new Error('Grid persistKey required to save columns');
1215 const conf = new GridPersistConf();
1217 conf.limit = this.pager.limit;
1218 conf.columns = this.columnSet.compileSaveObject();
1220 // Avoid persisting group visibility since that may change
1221 // with the addition of new columns. Always calculate that
1223 conf.hideToolbarActions = this.toolbarActions
1224 .filter(action => !action.isGroup && action.hidden)
1225 .map(action => action.label);
1227 return this.store.setItem('eg.grid.' + this.persistKey, conf);
1230 // TODO: saveGridConfigAsOrgSetting(...)
1232 getGridConfig(persistKey: string): Promise<GridPersistConf> {
1233 if (!persistKey) { return Promise.resolve(null); }
1234 return this.store.getItem('eg.grid.' + persistKey);
1237 columnHasTextGenerator(col: GridColumn): boolean {
1238 return this.cellTextGenerator && col.name in this.cellTextGenerator;
1243 // Actions apply to specific rows
1244 export class GridToolbarAction {
1246 onClick: EventEmitter<any []>;
1247 action: (rows: any[]) => any; // DEPRECATED
1250 isGroup: boolean; // used for group placeholder entries
1251 isSeparator: boolean;
1252 disableOnRows: (rows: any[]) => boolean;
1256 // Buttons are global actions
1257 export class GridToolbarButton {
1259 onClick: EventEmitter<any []>;
1260 action: () => any; // DEPRECATED
1264 export class GridToolbarCheckbox {
1267 onChange: EventEmitter<boolean>;
1270 export class GridDataSource {
1275 allRowsRetrieved: boolean;
1276 requestingData: boolean;
1277 retrievalError: boolean;
1278 getRows: (pager: Pager, sort: any[]) => Observable<any>;
1288 this.allRowsRetrieved = false;
1291 // called from the template -- no data fetching
1292 getPageOfRows(pager: Pager): any[] {
1294 return this.data.slice(
1295 pager.offset, pager.limit + pager.offset
1296 ).filter(row => row !== undefined);
1301 // called on initial component load and user action (e.g. paging, sorting).
1302 requestPage(pager: Pager): Promise<any> {
1305 this.getPageOfRows(pager).length === pager.limit
1306 // already have all data
1307 || this.allRowsRetrieved
1308 // have no way to get more data.
1311 return Promise.resolve();
1314 // If we have to call out for data, set inFetch
1315 this.requestingData = true;
1316 this.retrievalError = false;
1318 return new Promise((resolve, reject) => {
1319 let idx = pager.offset;
1320 return this.getRows(pager, this.sort).subscribe(
1322 this.data[idx++] = row;
1323 // not updating this.requestingData, as having
1324 // retrieved one row doesn't mean we're done
1325 this.retrievalError = false;
1328 console.error(`grid getRows() error ${err}`);
1329 this.requestingData = false;
1330 this.retrievalError = true;
1334 this.checkAllRetrieved(pager, idx);
1335 this.requestingData = false;
1336 this.retrievalError = false;
1343 // See if the last getRows() call resulted in the final set of data.
1344 checkAllRetrieved(pager: Pager, idx: number) {
1345 if (this.allRowsRetrieved) { return; }
1347 if (idx === 0 || idx < (pager.limit + pager.offset)) {
1348 // last query returned nothing or less than one page.
1349 // confirm we have all of the preceding pages.
1350 if (!this.data.includes(undefined)) {
1351 this.allRowsRetrieved = true;
1352 pager.resultCount = this.data.length;