source: trip-planner-front/node_modules/@angular/material/fesm2015/button-toggle.js@ 8d391a1

Last change on this file since 8d391a1 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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1import { FocusMonitor } from '@angular/cdk/a11y';
2import { coerceBooleanProperty } from '@angular/cdk/coercion';
3import { SelectionModel } from '@angular/cdk/collections';
4import { InjectionToken, forwardRef, EventEmitter, Directive, ChangeDetectorRef, Optional, Inject, ContentChildren, Input, Output, Component, ViewEncapsulation, ChangeDetectionStrategy, ElementRef, Attribute, ViewChild, NgModule } from '@angular/core';
5import { NG_VALUE_ACCESSOR } from '@angular/forms';
6import { mixinDisableRipple, MatCommonModule, MatRippleModule } from '@angular/material/core';
7
8/**
9 * @license
10 * Copyright Google LLC All Rights Reserved.
11 *
12 * Use of this source code is governed by an MIT-style license that can be
13 * found in the LICENSE file at https://angular.io/license
14 */
15/**
16 * Injection token that can be used to configure the
17 * default options for all button toggles within an app.
18 */
19const MAT_BUTTON_TOGGLE_DEFAULT_OPTIONS = new InjectionToken('MAT_BUTTON_TOGGLE_DEFAULT_OPTIONS');
20/**
21 * Injection token that can be used to reference instances of `MatButtonToggleGroup`.
22 * It serves as alternative token to the actual `MatButtonToggleGroup` class which
23 * could cause unnecessary retention of the class and its component metadata.
24 */
25const MAT_BUTTON_TOGGLE_GROUP = new InjectionToken('MatButtonToggleGroup');
26/**
27 * Provider Expression that allows mat-button-toggle-group to register as a ControlValueAccessor.
28 * This allows it to support [(ngModel)].
29 * @docs-private
30 */
31const MAT_BUTTON_TOGGLE_GROUP_VALUE_ACCESSOR = {
32 provide: NG_VALUE_ACCESSOR,
33 useExisting: forwardRef(() => MatButtonToggleGroup),
34 multi: true
35};
36// Counter used to generate unique IDs.
37let uniqueIdCounter = 0;
38/** Change event object emitted by MatButtonToggle. */
39class MatButtonToggleChange {
40 constructor(
41 /** The MatButtonToggle that emits the event. */
42 source,
43 /** The value assigned to the MatButtonToggle. */
44 value) {
45 this.source = source;
46 this.value = value;
47 }
48}
49/** Exclusive selection button toggle group that behaves like a radio-button group. */
50class MatButtonToggleGroup {
51 constructor(_changeDetector, defaultOptions) {
52 this._changeDetector = _changeDetector;
53 this._vertical = false;
54 this._multiple = false;
55 this._disabled = false;
56 /**
57 * The method to be called in order to update ngModel.
58 * Now `ngModel` binding is not supported in multiple selection mode.
59 */
60 this._controlValueAccessorChangeFn = () => { };
61 /** onTouch function registered via registerOnTouch (ControlValueAccessor). */
62 this._onTouched = () => { };
63 this._name = `mat-button-toggle-group-${uniqueIdCounter++}`;
64 /**
65 * Event that emits whenever the value of the group changes.
66 * Used to facilitate two-way data binding.
67 * @docs-private
68 */
69 this.valueChange = new EventEmitter();
70 /** Event emitted when the group's value changes. */
71 this.change = new EventEmitter();
72 this.appearance =
73 defaultOptions && defaultOptions.appearance ? defaultOptions.appearance : 'standard';
74 }
75 /** `name` attribute for the underlying `input` element. */
76 get name() { return this._name; }
77 set name(value) {
78 this._name = value;
79 if (this._buttonToggles) {
80 this._buttonToggles.forEach(toggle => {
81 toggle.name = this._name;
82 toggle._markForCheck();
83 });
84 }
85 }
86 /** Whether the toggle group is vertical. */
87 get vertical() { return this._vertical; }
88 set vertical(value) {
89 this._vertical = coerceBooleanProperty(value);
90 }
91 /** Value of the toggle group. */
92 get value() {
93 const selected = this._selectionModel ? this._selectionModel.selected : [];
94 if (this.multiple) {
95 return selected.map(toggle => toggle.value);
96 }
97 return selected[0] ? selected[0].value : undefined;
98 }
99 set value(newValue) {
100 this._setSelectionByValue(newValue);
101 this.valueChange.emit(this.value);
102 }
103 /** Selected button toggles in the group. */
104 get selected() {
105 const selected = this._selectionModel ? this._selectionModel.selected : [];
106 return this.multiple ? selected : (selected[0] || null);
107 }
108 /** Whether multiple button toggles can be selected. */
109 get multiple() { return this._multiple; }
110 set multiple(value) {
111 this._multiple = coerceBooleanProperty(value);
112 }
113 /** Whether multiple button toggle group is disabled. */
114 get disabled() { return this._disabled; }
115 set disabled(value) {
116 this._disabled = coerceBooleanProperty(value);
117 if (this._buttonToggles) {
118 this._buttonToggles.forEach(toggle => toggle._markForCheck());
119 }
120 }
121 ngOnInit() {
122 this._selectionModel = new SelectionModel(this.multiple, undefined, false);
123 }
124 ngAfterContentInit() {
125 this._selectionModel.select(...this._buttonToggles.filter(toggle => toggle.checked));
126 }
127 /**
128 * Sets the model value. Implemented as part of ControlValueAccessor.
129 * @param value Value to be set to the model.
130 */
131 writeValue(value) {
132 this.value = value;
133 this._changeDetector.markForCheck();
134 }
135 // Implemented as part of ControlValueAccessor.
136 registerOnChange(fn) {
137 this._controlValueAccessorChangeFn = fn;
138 }
139 // Implemented as part of ControlValueAccessor.
140 registerOnTouched(fn) {
141 this._onTouched = fn;
142 }
143 // Implemented as part of ControlValueAccessor.
144 setDisabledState(isDisabled) {
145 this.disabled = isDisabled;
146 }
147 /** Dispatch change event with current selection and group value. */
148 _emitChangeEvent() {
149 const selected = this.selected;
150 const source = Array.isArray(selected) ? selected[selected.length - 1] : selected;
151 const event = new MatButtonToggleChange(source, this.value);
152 this._controlValueAccessorChangeFn(event.value);
153 this.change.emit(event);
154 }
155 /**
156 * Syncs a button toggle's selected state with the model value.
157 * @param toggle Toggle to be synced.
158 * @param select Whether the toggle should be selected.
159 * @param isUserInput Whether the change was a result of a user interaction.
160 * @param deferEvents Whether to defer emitting the change events.
161 */
162 _syncButtonToggle(toggle, select, isUserInput = false, deferEvents = false) {
163 // Deselect the currently-selected toggle, if we're in single-selection
164 // mode and the button being toggled isn't selected at the moment.
165 if (!this.multiple && this.selected && !toggle.checked) {
166 this.selected.checked = false;
167 }
168 if (this._selectionModel) {
169 if (select) {
170 this._selectionModel.select(toggle);
171 }
172 else {
173 this._selectionModel.deselect(toggle);
174 }
175 }
176 else {
177 deferEvents = true;
178 }
179 // We need to defer in some cases in order to avoid "changed after checked errors", however
180 // the side-effect is that we may end up updating the model value out of sequence in others
181 // The `deferEvents` flag allows us to decide whether to do it on a case-by-case basis.
182 if (deferEvents) {
183 Promise.resolve().then(() => this._updateModelValue(isUserInput));
184 }
185 else {
186 this._updateModelValue(isUserInput);
187 }
188 }
189 /** Checks whether a button toggle is selected. */
190 _isSelected(toggle) {
191 return this._selectionModel && this._selectionModel.isSelected(toggle);
192 }
193 /** Determines whether a button toggle should be checked on init. */
194 _isPrechecked(toggle) {
195 if (typeof this._rawValue === 'undefined') {
196 return false;
197 }
198 if (this.multiple && Array.isArray(this._rawValue)) {
199 return this._rawValue.some(value => toggle.value != null && value === toggle.value);
200 }
201 return toggle.value === this._rawValue;
202 }
203 /** Updates the selection state of the toggles in the group based on a value. */
204 _setSelectionByValue(value) {
205 this._rawValue = value;
206 if (!this._buttonToggles) {
207 return;
208 }
209 if (this.multiple && value) {
210 if (!Array.isArray(value) && (typeof ngDevMode === 'undefined' || ngDevMode)) {
211 throw Error('Value must be an array in multiple-selection mode.');
212 }
213 this._clearSelection();
214 value.forEach((currentValue) => this._selectValue(currentValue));
215 }
216 else {
217 this._clearSelection();
218 this._selectValue(value);
219 }
220 }
221 /** Clears the selected toggles. */
222 _clearSelection() {
223 this._selectionModel.clear();
224 this._buttonToggles.forEach(toggle => toggle.checked = false);
225 }
226 /** Selects a value if there's a toggle that corresponds to it. */
227 _selectValue(value) {
228 const correspondingOption = this._buttonToggles.find(toggle => {
229 return toggle.value != null && toggle.value === value;
230 });
231 if (correspondingOption) {
232 correspondingOption.checked = true;
233 this._selectionModel.select(correspondingOption);
234 }
235 }
236 /** Syncs up the group's value with the model and emits the change event. */
237 _updateModelValue(isUserInput) {
238 // Only emit the change event for user input.
239 if (isUserInput) {
240 this._emitChangeEvent();
241 }
242 // Note: we emit this one no matter whether it was a user interaction, because
243 // it is used by Angular to sync up the two-way data binding.
244 this.valueChange.emit(this.value);
245 }
246}
247MatButtonToggleGroup.decorators = [
248 { type: Directive, args: [{
249 selector: 'mat-button-toggle-group',
250 providers: [
251 MAT_BUTTON_TOGGLE_GROUP_VALUE_ACCESSOR,
252 { provide: MAT_BUTTON_TOGGLE_GROUP, useExisting: MatButtonToggleGroup },
253 ],
254 host: {
255 'role': 'group',
256 'class': 'mat-button-toggle-group',
257 '[attr.aria-disabled]': 'disabled',
258 '[class.mat-button-toggle-vertical]': 'vertical',
259 '[class.mat-button-toggle-group-appearance-standard]': 'appearance === "standard"',
260 },
261 exportAs: 'matButtonToggleGroup',
262 },] }
263];
264MatButtonToggleGroup.ctorParameters = () => [
265 { type: ChangeDetectorRef },
266 { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [MAT_BUTTON_TOGGLE_DEFAULT_OPTIONS,] }] }
267];
268MatButtonToggleGroup.propDecorators = {
269 _buttonToggles: [{ type: ContentChildren, args: [forwardRef(() => MatButtonToggle), {
270 // Note that this would technically pick up toggles
271 // from nested groups, but that's not a case that we support.
272 descendants: true
273 },] }],
274 appearance: [{ type: Input }],
275 name: [{ type: Input }],
276 vertical: [{ type: Input }],
277 value: [{ type: Input }],
278 valueChange: [{ type: Output }],
279 multiple: [{ type: Input }],
280 disabled: [{ type: Input }],
281 change: [{ type: Output }]
282};
283// Boilerplate for applying mixins to the MatButtonToggle class.
284/** @docs-private */
285const _MatButtonToggleBase = mixinDisableRipple(class {
286});
287/** Single button inside of a toggle group. */
288class MatButtonToggle extends _MatButtonToggleBase {
289 constructor(toggleGroup, _changeDetectorRef, _elementRef, _focusMonitor, defaultTabIndex, defaultOptions) {
290 super();
291 this._changeDetectorRef = _changeDetectorRef;
292 this._elementRef = _elementRef;
293 this._focusMonitor = _focusMonitor;
294 this._isSingleSelector = false;
295 this._checked = false;
296 /**
297 * Users can specify the `aria-labelledby` attribute which will be forwarded to the input element
298 */
299 this.ariaLabelledby = null;
300 this._disabled = false;
301 /** Event emitted when the group value changes. */
302 this.change = new EventEmitter();
303 const parsedTabIndex = Number(defaultTabIndex);
304 this.tabIndex = (parsedTabIndex || parsedTabIndex === 0) ? parsedTabIndex : null;
305 this.buttonToggleGroup = toggleGroup;
306 this.appearance =
307 defaultOptions && defaultOptions.appearance ? defaultOptions.appearance : 'standard';
308 }
309 /** Unique ID for the underlying `button` element. */
310 get buttonId() { return `${this.id}-button`; }
311 /** The appearance style of the button. */
312 get appearance() {
313 return this.buttonToggleGroup ? this.buttonToggleGroup.appearance : this._appearance;
314 }
315 set appearance(value) {
316 this._appearance = value;
317 }
318 /** Whether the button is checked. */
319 get checked() {
320 return this.buttonToggleGroup ? this.buttonToggleGroup._isSelected(this) : this._checked;
321 }
322 set checked(value) {
323 const newValue = coerceBooleanProperty(value);
324 if (newValue !== this._checked) {
325 this._checked = newValue;
326 if (this.buttonToggleGroup) {
327 this.buttonToggleGroup._syncButtonToggle(this, this._checked);
328 }
329 this._changeDetectorRef.markForCheck();
330 }
331 }
332 /** Whether the button is disabled. */
333 get disabled() {
334 return this._disabled || (this.buttonToggleGroup && this.buttonToggleGroup.disabled);
335 }
336 set disabled(value) { this._disabled = coerceBooleanProperty(value); }
337 ngOnInit() {
338 const group = this.buttonToggleGroup;
339 this._isSingleSelector = group && !group.multiple;
340 this.id = this.id || `mat-button-toggle-${uniqueIdCounter++}`;
341 if (this._isSingleSelector) {
342 this.name = group.name;
343 }
344 if (group) {
345 if (group._isPrechecked(this)) {
346 this.checked = true;
347 }
348 else if (group._isSelected(this) !== this._checked) {
349 // As as side effect of the circular dependency between the toggle group and the button,
350 // we may end up in a state where the button is supposed to be checked on init, but it
351 // isn't, because the checked value was assigned too early. This can happen when Ivy
352 // assigns the static input value before the `ngOnInit` has run.
353 group._syncButtonToggle(this, this._checked);
354 }
355 }
356 }
357 ngAfterViewInit() {
358 this._focusMonitor.monitor(this._elementRef, true);
359 }
360 ngOnDestroy() {
361 const group = this.buttonToggleGroup;
362 this._focusMonitor.stopMonitoring(this._elementRef);
363 // Remove the toggle from the selection once it's destroyed. Needs to happen
364 // on the next tick in order to avoid "changed after checked" errors.
365 if (group && group._isSelected(this)) {
366 group._syncButtonToggle(this, false, false, true);
367 }
368 }
369 /** Focuses the button. */
370 focus(options) {
371 this._buttonElement.nativeElement.focus(options);
372 }
373 /** Checks the button toggle due to an interaction with the underlying native button. */
374 _onButtonClick() {
375 const newChecked = this._isSingleSelector ? true : !this._checked;
376 if (newChecked !== this._checked) {
377 this._checked = newChecked;
378 if (this.buttonToggleGroup) {
379 this.buttonToggleGroup._syncButtonToggle(this, this._checked, true);
380 this.buttonToggleGroup._onTouched();
381 }
382 }
383 // Emit a change event when it's the single selector
384 this.change.emit(new MatButtonToggleChange(this, this.value));
385 }
386 /**
387 * Marks the button toggle as needing checking for change detection.
388 * This method is exposed because the parent button toggle group will directly
389 * update bound properties of the radio button.
390 */
391 _markForCheck() {
392 // When the group value changes, the button will not be notified.
393 // Use `markForCheck` to explicit update button toggle's status.
394 this._changeDetectorRef.markForCheck();
395 }
396}
397MatButtonToggle.decorators = [
398 { type: Component, args: [{
399 selector: 'mat-button-toggle',
400 template: "<button #button class=\"mat-button-toggle-button mat-focus-indicator\"\n type=\"button\"\n [id]=\"buttonId\"\n [attr.tabindex]=\"disabled ? -1 : tabIndex\"\n [attr.aria-pressed]=\"checked\"\n [disabled]=\"disabled || null\"\n [attr.name]=\"name || null\"\n [attr.aria-label]=\"ariaLabel\"\n [attr.aria-labelledby]=\"ariaLabelledby\"\n (click)=\"_onButtonClick()\">\n <span class=\"mat-button-toggle-label-content\">\n <ng-content></ng-content>\n </span>\n</button>\n\n<span class=\"mat-button-toggle-focus-overlay\"></span>\n<span class=\"mat-button-toggle-ripple\" matRipple\n [matRippleTrigger]=\"button\"\n [matRippleDisabled]=\"this.disableRipple || this.disabled\">\n</span>\n",
401 encapsulation: ViewEncapsulation.None,
402 exportAs: 'matButtonToggle',
403 changeDetection: ChangeDetectionStrategy.OnPush,
404 inputs: ['disableRipple'],
405 host: {
406 '[class.mat-button-toggle-standalone]': '!buttonToggleGroup',
407 '[class.mat-button-toggle-checked]': 'checked',
408 '[class.mat-button-toggle-disabled]': 'disabled',
409 '[class.mat-button-toggle-appearance-standard]': 'appearance === "standard"',
410 'class': 'mat-button-toggle',
411 '[attr.aria-label]': 'null',
412 '[attr.aria-labelledby]': 'null',
413 '[attr.id]': 'id',
414 '[attr.name]': 'null',
415 '(focus)': 'focus()',
416 'role': 'presentation',
417 },
418 styles: [".mat-button-toggle-standalone,.mat-button-toggle-group{position:relative;display:inline-flex;flex-direction:row;white-space:nowrap;overflow:hidden;border-radius:2px;-webkit-tap-highlight-color:transparent}.cdk-high-contrast-active .mat-button-toggle-standalone,.cdk-high-contrast-active .mat-button-toggle-group{outline:solid 1px}.mat-button-toggle-standalone.mat-button-toggle-appearance-standard,.mat-button-toggle-group-appearance-standard{border-radius:4px}.cdk-high-contrast-active .mat-button-toggle-standalone.mat-button-toggle-appearance-standard,.cdk-high-contrast-active .mat-button-toggle-group-appearance-standard{outline:0}.mat-button-toggle-vertical{flex-direction:column}.mat-button-toggle-vertical .mat-button-toggle-label-content{display:block}.mat-button-toggle{white-space:nowrap;position:relative}.mat-button-toggle .mat-icon svg{vertical-align:top}.mat-button-toggle.cdk-keyboard-focused .mat-button-toggle-focus-overlay{opacity:1}.cdk-high-contrast-active .mat-button-toggle.cdk-keyboard-focused .mat-button-toggle-focus-overlay{opacity:.5}.mat-button-toggle-appearance-standard:not(.mat-button-toggle-disabled):hover .mat-button-toggle-focus-overlay{opacity:.04}.mat-button-toggle-appearance-standard.cdk-keyboard-focused:not(.mat-button-toggle-disabled) .mat-button-toggle-focus-overlay{opacity:.12}.cdk-high-contrast-active .mat-button-toggle-appearance-standard.cdk-keyboard-focused:not(.mat-button-toggle-disabled) .mat-button-toggle-focus-overlay{opacity:.5}@media(hover: none){.mat-button-toggle-appearance-standard:not(.mat-button-toggle-disabled):hover .mat-button-toggle-focus-overlay{display:none}}.mat-button-toggle-label-content{-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;display:inline-block;line-height:36px;padding:0 16px;position:relative}.mat-button-toggle-appearance-standard .mat-button-toggle-label-content{padding:0 12px}.mat-button-toggle-label-content>*{vertical-align:middle}.mat-button-toggle-focus-overlay{border-radius:inherit;pointer-events:none;opacity:0;top:0;left:0;right:0;bottom:0;position:absolute}.mat-button-toggle-checked .mat-button-toggle-focus-overlay{border-bottom:solid 36px}.cdk-high-contrast-active .mat-button-toggle-checked .mat-button-toggle-focus-overlay{opacity:.5;height:0}.cdk-high-contrast-active .mat-button-toggle-checked.mat-button-toggle-appearance-standard .mat-button-toggle-focus-overlay{border-bottom:solid 500px}.mat-button-toggle .mat-button-toggle-ripple{top:0;left:0;right:0;bottom:0;position:absolute;pointer-events:none}.mat-button-toggle-button{border:0;background:none;color:inherit;padding:0;margin:0;font:inherit;outline:none;width:100%;cursor:pointer}.mat-button-toggle-disabled .mat-button-toggle-button{cursor:default}.mat-button-toggle-button::-moz-focus-inner{border:0}\n"]
419 },] }
420];
421MatButtonToggle.ctorParameters = () => [
422 { type: MatButtonToggleGroup, decorators: [{ type: Optional }, { type: Inject, args: [MAT_BUTTON_TOGGLE_GROUP,] }] },
423 { type: ChangeDetectorRef },
424 { type: ElementRef },
425 { type: FocusMonitor },
426 { type: String, decorators: [{ type: Attribute, args: ['tabindex',] }] },
427 { type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [MAT_BUTTON_TOGGLE_DEFAULT_OPTIONS,] }] }
428];
429MatButtonToggle.propDecorators = {
430 ariaLabel: [{ type: Input, args: ['aria-label',] }],
431 ariaLabelledby: [{ type: Input, args: ['aria-labelledby',] }],
432 _buttonElement: [{ type: ViewChild, args: ['button',] }],
433 id: [{ type: Input }],
434 name: [{ type: Input }],
435 value: [{ type: Input }],
436 tabIndex: [{ type: Input }],
437 appearance: [{ type: Input }],
438 checked: [{ type: Input }],
439 disabled: [{ type: Input }],
440 change: [{ type: Output }]
441};
442
443/**
444 * @license
445 * Copyright Google LLC All Rights Reserved.
446 *
447 * Use of this source code is governed by an MIT-style license that can be
448 * found in the LICENSE file at https://angular.io/license
449 */
450class MatButtonToggleModule {
451}
452MatButtonToggleModule.decorators = [
453 { type: NgModule, args: [{
454 imports: [MatCommonModule, MatRippleModule],
455 exports: [MatCommonModule, MatButtonToggleGroup, MatButtonToggle],
456 declarations: [MatButtonToggleGroup, MatButtonToggle],
457 },] }
458];
459
460/**
461 * @license
462 * Copyright Google LLC All Rights Reserved.
463 *
464 * Use of this source code is governed by an MIT-style license that can be
465 * found in the LICENSE file at https://angular.io/license
466 */
467
468/**
469 * Generated bundle index. Do not edit.
470 */
471
472export { MAT_BUTTON_TOGGLE_DEFAULT_OPTIONS, MAT_BUTTON_TOGGLE_GROUP, MAT_BUTTON_TOGGLE_GROUP_VALUE_ACCESSOR, MatButtonToggle, MatButtonToggleChange, MatButtonToggleGroup, MatButtonToggleModule };
473//# sourceMappingURL=button-toggle.js.map
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