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Consolidate dropdown controllers (maybe-finance#600)
* Basic listbox and popover controllers with temporary example * Separate select and menu controllers
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app/javascript/controllers/currency_dropdown_controller.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| import { Controller } from "@hotwired/stimulus"; | ||
|
|
||
| /** | ||
| * A "menu" can contain arbitrary content including non-clickable items, links, buttons, and forms. | ||
| * | ||
| * - If you need a form-enabled "select" element, use the "listbox" controller instead. | ||
| */ | ||
| export default class extends Controller { | ||
| static targets = ["button", "content"]; | ||
|
|
||
| connect() { | ||
| this.show = false; | ||
| this.contentTarget.classList.add("hidden"); // Initially hide the popover | ||
| this.buttonTarget.addEventListener("click", this.toggle); | ||
| this.element.addEventListener("keydown", this.handleKeydown); | ||
| document.addEventListener("click", this.handleOutsideClick); | ||
| document.addEventListener("turbo:load", this.handleTurboLoad); | ||
| } | ||
|
|
||
| disconnect() { | ||
| this.element.removeEventListener("keydown", this.handleKeydown); | ||
| this.buttonTarget.removeEventListener("click", this.toggle); | ||
| document.removeEventListener("click", this.handleOutsideClick); | ||
| document.removeEventListener("turbo:load", this.handleTurboLoad); | ||
| this.close(); | ||
| } | ||
|
|
||
| // If turbo reloads, we maintain the state of the menu | ||
| handleTurboLoad = () => { | ||
| if (!this.show) this.close(); | ||
| }; | ||
|
|
||
| handleOutsideClick = (event) => { | ||
| if (this.show && !this.element.contains(event.target)) { | ||
| this.close(); | ||
| } | ||
| }; | ||
|
|
||
| handleKeydown = (event) => { | ||
| switch (event.key) { | ||
| case " ": | ||
| event.preventDefault(); // Prevent the default action to avoid scrolling | ||
| if (document.activeElement === this.buttonTarget) { | ||
| this.toggle(); | ||
| } | ||
| case "Escape": | ||
| this.close(); | ||
| this.buttonTarget.focus(); // Bring focus back to the button | ||
| break; | ||
| } | ||
| }; | ||
|
|
||
| toggle = () => { | ||
| this.show = !this.show; | ||
| this.contentTarget.classList.toggle("hidden", !this.show); | ||
| if (this.show) { | ||
| this.focusFirstElement(); | ||
| } | ||
| }; | ||
|
|
||
| close() { | ||
| this.show = false; | ||
| this.contentTarget.classList.add("hidden"); | ||
| } | ||
|
|
||
| focusFirstElement() { | ||
| const focusableElements = | ||
| 'button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])'; | ||
| const firstFocusableElement = | ||
| this.contentTarget.querySelectorAll(focusableElements)[0]; | ||
| if (firstFocusableElement) { | ||
| firstFocusableElement.focus(); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,141 @@ | ||
| import { Controller } from "@hotwired/stimulus"; | ||
|
|
||
| /** | ||
| * A custom "select" element that follows accessibility patterns of a native select element. | ||
| * | ||
| * - If you need to display arbitrary content including non-clickable items, links, buttons, and forms, use the "popover" controller instead. | ||
| */ | ||
| export default class extends Controller { | ||
| static classes = ["active"]; | ||
| static targets = ["option", "button", "list", "input", "buttonText"]; | ||
|
|
||
| connect() { | ||
| this.show = false; | ||
| this.syncButtonTextWithInput(); | ||
| this.listTarget.classList.add("hidden"); | ||
| this.buttonTarget.addEventListener("click", this.toggleList); | ||
| this.element.addEventListener("keydown", this.handleKeydown); | ||
| document.addEventListener("click", this.handleOutsideClick); | ||
| this.element.addEventListener("turbo:load", this.handleTurboLoad); | ||
| } | ||
|
|
||
| disconnect() { | ||
| this.element.removeEventListener("keydown", this.handleKeydown); | ||
| document.removeEventListener("click", this.handleOutsideClick); | ||
| this.buttonTarget.removeEventListener("click", this.toggleList); | ||
| this.element.removeEventListener("turbo:load", this.handleTurboLoad); | ||
| } | ||
|
|
||
| handleOutsideClick = (event) => { | ||
| if (this.show && !this.element.contains(event.target)) { | ||
| this.close(); | ||
| } | ||
| }; | ||
|
|
||
| handleTurboLoad = () => { | ||
| this.close(); | ||
| this.syncButtonTextWithInput(); | ||
| }; | ||
|
|
||
| handleKeydown = (event) => { | ||
| switch (event.key) { | ||
| case " ": | ||
| case "Enter": | ||
| event.preventDefault(); // Prevent the default action to avoid scrolling | ||
| if (document.activeElement === this.buttonTarget) { | ||
| this.toggleList(); | ||
| } else { | ||
| this.selectOption(event); | ||
| } | ||
| break; | ||
| case "ArrowDown": | ||
| event.preventDefault(); // Prevent the default action to avoid scrolling | ||
| this.focusNextOption(); | ||
| break; | ||
| case "ArrowUp": | ||
| event.preventDefault(); // Prevent the default action to avoid scrolling | ||
| this.focusPreviousOption(); | ||
| break; | ||
| case "Escape": | ||
| this.close(); | ||
| this.buttonTarget.focus(); // Bring focus back to the button | ||
| break; | ||
| case "Tab": | ||
| this.close(); | ||
| break; | ||
| } | ||
| }; | ||
|
|
||
| focusNextOption() { | ||
| this.focusOptionInDirection(1); | ||
| } | ||
|
|
||
| focusPreviousOption() { | ||
| this.focusOptionInDirection(-1); | ||
| } | ||
|
|
||
| focusOptionInDirection(direction) { | ||
| const currentFocusedIndex = this.optionTargets.findIndex( | ||
| (option) => option === document.activeElement | ||
| ); | ||
| const optionsCount = this.optionTargets.length; | ||
| const nextIndex = | ||
| (currentFocusedIndex + direction + optionsCount) % optionsCount; | ||
| this.optionTargets[nextIndex].focus(); | ||
| } | ||
|
|
||
| toggleList = () => { | ||
| this.show = !this.show; | ||
| this.listTarget.classList.toggle("hidden", !this.show); | ||
| this.buttonTarget.setAttribute("aria-expanded", this.show.toString()); | ||
|
|
||
| if (this.show) { | ||
| // Focus the first option or the selected option when the list is shown | ||
| const selectedOption = this.optionTargets.find( | ||
| (option) => option.getAttribute("aria-selected") === "true" | ||
| ); | ||
| (selectedOption || this.optionTargets[0]).focus(); | ||
| } | ||
| }; | ||
|
|
||
| close() { | ||
| this.show = false; | ||
| this.listTarget.classList.add("hidden"); | ||
| this.buttonTarget.setAttribute("aria-expanded", "false"); | ||
| } | ||
|
|
||
| selectOption(event) { | ||
| const selectedOption = | ||
| event.type === "keydown" ? document.activeElement : event.currentTarget; | ||
| this.optionTargets.forEach((option) => { | ||
| option.setAttribute("aria-selected", "false"); | ||
| option.setAttribute("tabindex", "-1"); | ||
| option.classList.remove(...this.activeClasses); | ||
| }); | ||
| selectedOption.classList.add(...this.activeClasses); | ||
| selectedOption.setAttribute("aria-selected", "true"); | ||
| selectedOption.focus(); | ||
| this.close(); // Close the list after selection | ||
|
|
||
| // Update the hidden input's value | ||
| const selectedValue = selectedOption.getAttribute("data-value"); | ||
| this.inputTarget.value = selectedValue; | ||
| this.syncButtonTextWithInput(); | ||
|
|
||
| // Auto-submit controller listens for this even to auto-submit | ||
| const inputEvent = new Event("input", { | ||
| bubbles: true, | ||
| cancelable: true, | ||
| }); | ||
| this.inputTarget.dispatchEvent(inputEvent); | ||
| } | ||
|
|
||
| syncButtonTextWithInput() { | ||
| const matchingOption = this.optionTargets.find( | ||
| (option) => option.getAttribute("data-value") === this.inputTarget.value | ||
| ); | ||
| if (matchingOption) { | ||
| this.buttonTextTarget.textContent = matchingOption.textContent.trim(); | ||
| } | ||
| } | ||
| } |
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