@ux-aspects/ux-aspects
Version:
Open source user interface framework for building modern, responsive, mobile big data applications
184 lines • 31.8 kB
JavaScript
import { Injectable } from '@angular/core';
import { BaseResizableTableService, ResizableTableType } from '../resizable-table-base.service';
import * as i0 from "@angular/core";
export class ResizableTableService extends BaseResizableTableService {
constructor() {
super(...arguments);
/** Define the type of resizing we should use */
this.type = ResizableTableType.Standard;
}
/** Store the size of each column */
setColumns(columns) {
// store the current columns
this._columns = columns;
// store the sizes
this.columns = columns.map(column => (column.getNaturalWidth() / this.tableWidth) * 100);
// check if there is any overflow
this.columns = this.ensureNoOverflow(this.columns);
// ensure all the columns fit
this._columns.forEach((column, idx) => {
if (!column.disabled) {
this.resizeColumn(idx, 0, false);
}
});
// indicate we are now initialised
if (this.isInitialised$.value === false) {
this.isInitialised$.next(true);
}
}
/** Set all resizable columns to the same width */
setUniformWidths() {
// set any disabled columns to their specified width
this.columns = this._columns.map(column => column.disabled ? (column.getNaturalWidth() / this.tableWidth) * 100 : 0);
// check to see if we've reached 100% of the table width
const totalWidth = this.columns.reduce((partial, columnWidth) => partial + columnWidth);
if (totalWidth > 100) {
// remove overflow
this.columns = this.ensureNoOverflow(this.columns);
}
else {
// get the list of resizable columns
const resizableColumns = this._columns.toArray().filter(column => !column.disabled);
// work out what we need to add to each column to make up the full width
const newWidth = (100 - totalWidth) / resizableColumns.length;
// set the non-disabled columns to the new width
this.columns = this._columns.map((column, idx) => column.disabled ? this.columns[idx] : newWidth);
}
// do the resizing
this._columns.forEach((column, idx) => {
if (!column.disabled) {
this.resizeColumn(idx, 0, false);
}
});
}
ensureNoOverflow(columns) {
// get the total width
const total = columns.reduce((width, column) => width + column);
// if we have no overflow then we don't need to do anything
if (total <= 100) {
return columns;
}
// if there is overflow identify which columns can be resized
const variableColumns = this._columns.filter(column => !column.disabled && this.getColumnWidth(column.getCellIndex(), ColumnUnit.Pixel, columns) > column.minWidth);
// if there are no columns that can be resized then stop here
if (variableColumns.length === 0) {
return columns;
}
// determine the total width of the variable columns
const totalWidth = this._columns.reduce((width, column) => width + this.getColumnWidth(column.getCellIndex(), ColumnUnit.Pixel, columns), 0);
// determine to the width of all the variable columns
const variableColumnsWidth = variableColumns.reduce((width, column) => width + this.getColumnWidth(column.getCellIndex(), ColumnUnit.Pixel, columns), 0);
// determine how much the columns are currently too large (ignoring fixed columns)
const targetWidth = this.tableWidth - (totalWidth - variableColumnsWidth);
// determine how much we need to reduce a column by
const difference = variableColumnsWidth - targetWidth;
// find the column with the largest size
const target = variableColumns.reduce((widest, column) => {
const columnWidth = this.getColumnWidth(column.getCellIndex(), ColumnUnit.Pixel, columns);
const widestWidth = this.getColumnWidth(widest.getCellIndex(), ColumnUnit.Pixel, columns);
return columnWidth > widestWidth ? column : widest;
});
// perform the resize
columns = this.setColumnWidth(target.getCellIndex(), this.getColumnWidth(target.getCellIndex(), ColumnUnit.Pixel, columns) - difference, ColumnUnit.Pixel, columns);
// check if we are still over the limit (allow some variance for javascript double precision)
if (columns.reduce((width, column) => width + column) > 100.01) {
return this.ensureNoOverflow(columns);
}
return columns;
}
/** Allow setting the column size in any unit */
setColumnWidth(index, value, unit, columns = this.columns) {
// create a new array so we keep the instance array immutable
const sizes = [...columns];
switch (unit) {
case ColumnUnit.Percentage:
sizes[index] = value;
break;
case ColumnUnit.Pixel:
sizes[index] = (value / this.tableWidth) * 100;
break;
}
// update the instance variable
return sizes;
}
/** Resize a column by a specific pixel amount */
resizeColumn(index, delta, isDragging = true) {
// get the sibling column that will also be resized
const sibling = this.getSiblingColumn(index);
// if there is no sibling that can be resized then stop here
if (!sibling) {
return;
}
// create a new array for the sizes
let columns = [...this.columns];
// resize the column to the desired size
columns = this.setColumnWidth(index, Math.round(this.getColumnWidth(index, ColumnUnit.Pixel) + delta), ColumnUnit.Pixel, columns);
columns = this.setColumnWidth(sibling, Math.round(this.getColumnWidth(sibling, ColumnUnit.Pixel) - delta), ColumnUnit.Pixel, columns);
// if the move is not possible then stop here
if (!this.isWidthValid(index, this.getColumnWidth(index, ColumnUnit.Pixel, columns)) || !this.isWidthValid(sibling, this.getColumnWidth(sibling, ColumnUnit.Pixel, columns))) {
return;
}
// check that we add up to exactly 100%
const total = columns.reduce((count, column) => column + count, 0);
// if the columns to not add to 100 ensure we make them
if (total !== 100) {
// get the column with a variable width
const target = this.getVariableColumn(100 - total);
if (target && !isDragging) {
columns[this._columns.toArray().indexOf(target)] += (100 - total);
}
else {
columns[index] += (100 - total);
}
}
// store the new sizes
this.columns = columns;
// emit the resize event for each column
this.onResize$.next();
}
getVariableColumn(delta) {
// get all variable width columns that are not disabled
const variableColumns = this._columns.filter(column => !column.isFixedWidth && !column.disabled);
// find one that is greater than its min width by enough
return variableColumns.reverse().find(column => this.getColumnWidth(column.getCellIndex(), ColumnUnit.Pixel) >= column.minWidth + delta);
}
getColumn(index) {
return this._columns ? this._columns.toArray()[index] : null;
}
getColumnDisabled(index) {
return this.getColumn(index) ? this.getColumn(index).disabled : false;
}
/** Determine whether a column is above or below its minimum width */
isWidthValid(index, width) {
// get the column at a given position
const column = this.getColumnInstance(index);
// determine if the specified width is greater than the min width
return column && width >= column.minWidth;
}
/** Get the next column in the sequence of columns */
getSiblingColumn(index) {
// find the first sibling that is not disabled
for (let idx = index + 1; idx < this.columns.length; idx++) {
const sibling = this.getColumnInstance(idx);
if (!sibling || !sibling.disabled) {
return idx;
}
}
return null;
}
/** Get the column class from our query list */
getColumnInstance(index) {
return this._columns ? this._columns.toArray()[index] : null;
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: ResizableTableService, deps: null, target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: ResizableTableService }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: ResizableTableService, decorators: [{
type: Injectable
}] });
export var ColumnUnit;
(function (ColumnUnit) {
ColumnUnit[ColumnUnit["Pixel"] = 0] = "Pixel";
ColumnUnit[ColumnUnit["Percentage"] = 1] = "Percentage";
})(ColumnUnit || (ColumnUnit = {}));
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{ Injectable, QueryList } from '@angular/core';\nimport { ResizableTableColumnComponent } from '../resizable-table-column.component';\nimport { BaseResizableTableService, ResizableTableType } from '../resizable-table-base.service';\n\n@Injectable()\nexport class ResizableTableService extends BaseResizableTableService {\n\n    /** Define the type of resizing we should use */\n    type: ResizableTableType = ResizableTableType.Standard;\n\n    /** Store the QueryList of columns */\n    private _columns: QueryList<ResizableTableColumnComponent>;\n\n    /** Store the size of each column */\n    setColumns(columns: QueryList<ResizableTableColumnComponent>): void {\n\n        // store the current columns\n        this._columns = columns;\n\n        // store the sizes\n        this.columns = columns.map(column => (column.getNaturalWidth() / this.tableWidth) * 100);\n\n        // check if there is any overflow\n        this.columns = this.ensureNoOverflow(this.columns);\n\n        // ensure all the columns fit\n        this._columns.forEach((column, idx) => {\n            if (!column.disabled) {\n                this.resizeColumn(idx, 0, false);\n            }\n        });\n\n        // indicate we are now initialised\n        if (this.isInitialised$.value === false) {\n            this.isInitialised$.next(true);\n        }\n    }\n\n    /** Set all resizable columns to the same width */\n    setUniformWidths(): void {\n\n        // set any disabled columns to their specified width\n        this.columns = this._columns.map(column => column.disabled ? (column.getNaturalWidth() / this.tableWidth) * 100 : 0);\n\n        // check to see if we've reached 100% of the table width\n        const totalWidth = this.columns.reduce((partial, columnWidth) => partial + columnWidth);\n\n        if (totalWidth > 100) {\n            // remove overflow\n            this.columns = this.ensureNoOverflow(this.columns);\n        } else {\n            // get the list of resizable columns\n            const resizableColumns = this._columns.toArray().filter(column => !column.disabled);\n\n            // work out what we need to add to each column to make up the full width\n            const newWidth = (100 - totalWidth) / resizableColumns.length;\n\n            // set the non-disabled columns to the new width\n            this.columns = this._columns.map((column, idx) => column.disabled ? this.columns[idx] : newWidth);\n        }\n\n        // do the resizing\n        this._columns.forEach((column, idx) => {\n            if (!column.disabled) {\n                this.resizeColumn(idx, 0, false);\n            }\n        });\n\n    }\n\n    ensureNoOverflow(columns: ReadonlyArray<number>): ReadonlyArray<number> {\n\n        // get the total width\n        const total = columns.reduce((width, column) => width + column);\n\n        // if we have no overflow then we don't need to do anything\n        if (total <= 100) {\n            return columns;\n        }\n\n        // if there is overflow identify which columns can be resized\n        const variableColumns = this._columns.filter(column => !column.disabled && this.getColumnWidth(column.getCellIndex(), ColumnUnit.Pixel, columns) > column.minWidth);\n\n        // if there are no columns that can be resized then stop here\n        if (variableColumns.length === 0) {\n            return columns;\n        }\n\n        // determine the total width of the variable columns\n        const totalWidth = this._columns.reduce((width, column) => width + this.getColumnWidth(column.getCellIndex(), ColumnUnit.Pixel, columns), 0);\n\n        // determine to the width of all the variable columns\n        const variableColumnsWidth = variableColumns.reduce((width, column) => width + this.getColumnWidth(column.getCellIndex(), ColumnUnit.Pixel, columns), 0);\n\n        // determine how much the columns are currently too large (ignoring fixed columns)\n        const targetWidth = this.tableWidth - (totalWidth - variableColumnsWidth);\n\n        // determine how much we need to reduce a column by\n        const difference = variableColumnsWidth - targetWidth;\n\n        // find the column with the largest size\n        const target = variableColumns.reduce((widest, column) => {\n            const columnWidth = this.getColumnWidth(column.getCellIndex(), ColumnUnit.Pixel, columns);\n            const widestWidth = this.getColumnWidth(widest.getCellIndex(), ColumnUnit.Pixel, columns);\n\n            return columnWidth > widestWidth ? column : widest;\n        });\n\n        // perform the resize\n        columns = this.setColumnWidth(target.getCellIndex(), this.getColumnWidth(target.getCellIndex(), ColumnUnit.Pixel, columns) - difference, ColumnUnit.Pixel, columns);\n\n        // check if we are still over the limit (allow some variance for javascript double precision)\n        if (columns.reduce((width, column) => width + column) > 100.01) {\n            return this.ensureNoOverflow(columns);\n        }\n\n        return columns;\n    }\n\n    /** Allow setting the column size in any unit */\n    setColumnWidth(index: number, value: number, unit: ColumnUnit, columns: ReadonlyArray<number> = this.columns): ReadonlyArray<number> {\n\n        // create a new array so we keep the instance array immutable\n        const sizes = [...columns];\n\n        switch (unit) {\n\n            case ColumnUnit.Percentage:\n                sizes[index] = value;\n                break;\n\n            case ColumnUnit.Pixel:\n                sizes[index] = (value / this.tableWidth) * 100;\n                break;\n        }\n\n        // update the instance variable\n        return sizes;\n    }\n\n    /** Resize a column by a specific pixel amount */\n    resizeColumn(index: number, delta: number, isDragging: boolean = true): void {\n\n        // get the sibling column that will also be resized\n        const sibling = this.getSiblingColumn(index);\n\n        // if there is no sibling that can be resized then stop here\n        if (!sibling) {\n            return;\n        }\n\n        // create a new array for the sizes\n        let columns = [...this.columns] as number[];\n\n        // resize the column to the desired size\n        columns = this.setColumnWidth(index, Math.round(this.getColumnWidth(index, ColumnUnit.Pixel) + delta), ColumnUnit.Pixel, columns) as number[];\n        columns = this.setColumnWidth(sibling, Math.round(this.getColumnWidth(sibling, ColumnUnit.Pixel) - delta), ColumnUnit.Pixel, columns) as number[];\n\n        // if the move is not possible then stop here\n        if (!this.isWidthValid(index, this.getColumnWidth(index, ColumnUnit.Pixel, columns)) || !this.isWidthValid(sibling, this.getColumnWidth(sibling, ColumnUnit.Pixel, columns))) {\n            return;\n        }\n\n        // check that we add up to exactly 100%\n        const total = columns.reduce((count, column) => column + count, 0);\n\n        // if the columns to not add to 100 ensure we make them\n        if (total !== 100) {\n\n            // get the column with a variable width\n            const target = this.getVariableColumn(100 - total);\n\n            if (target && !isDragging) {\n                columns[this._columns.toArray().indexOf(target)] += (100 - total);\n            } else {\n                columns[index] += (100 - total);\n            }\n        }\n\n        // store the new sizes\n        this.columns = columns;\n\n        // emit the resize event for each column\n        this.onResize$.next();\n    }\n\n    getVariableColumn(delta: number): ResizableTableColumnComponent | null {\n\n        // get all variable width columns that are not disabled\n        const variableColumns = this._columns.filter(column => !column.isFixedWidth && !column.disabled);\n\n        // find one that is greater than its min width by enough\n        return variableColumns.reverse().find(column => this.getColumnWidth(column.getCellIndex(), ColumnUnit.Pixel) >= column.minWidth + delta);\n    }\n\n    getColumn(index: number): ResizableTableColumnComponent | null {\n        return this._columns ? this._columns.toArray()[index] : null;\n    }\n\n    getColumnDisabled(index: number): boolean {\n        return this.getColumn(index) ? this.getColumn(index).disabled : false;\n    }\n\n    /** Determine whether a column is above or below its minimum width */\n    private isWidthValid(index: number, width: number): boolean {\n\n        // get the column at a given position\n        const column = this.getColumnInstance(index);\n\n        // determine if the specified width is greater than the min width\n        return column && width >= column.minWidth;\n    }\n\n    /** Get the next column in the sequence of columns */\n    private getSiblingColumn(index: number): number | null {\n\n        // find the first sibling that is not disabled\n        for (let idx = index + 1; idx < this.columns.length; idx++) {\n\n            const sibling = this.getColumnInstance(idx);\n\n            if (!sibling || !sibling.disabled) {\n                return idx;\n            }\n        }\n\n        return null;\n    }\n\n    /** Get the column class from our query list */\n    private getColumnInstance(index: number): ResizableTableColumnComponent | null {\n        return this._columns ? this._columns.toArray()[index] : null;\n    }\n\n}\n\nexport enum ColumnUnit {\n    Pixel,\n    Percentage\n}"]}