From 443daab1287d4e05b9f63472fce9882ff199d8b0 Mon Sep 17 00:00:00 2001 From: Mouse Reeve Date: Fri, 19 Mar 2021 10:47:32 -0700 Subject: [PATCH] Move tabs javascript into separate file --- bookwyrm/static/js/shared.js | 259 ---------------------- bookwyrm/static/js/tabs.js | 261 +++++++++++++++++++++++ bookwyrm/templates/feed/feed_layout.html | 3 + bookwyrm/templates/layout.html | 1 + 4 files changed, 265 insertions(+), 259 deletions(-) create mode 100644 bookwyrm/static/js/tabs.js diff --git a/bookwyrm/static/js/shared.js b/bookwyrm/static/js/shared.js index a7f30660a..98525f6e7 100644 --- a/bookwyrm/static/js/shared.js +++ b/bookwyrm/static/js/shared.js @@ -15,10 +15,6 @@ window.onload = function() { input.addEventListener('change', toggleAllCheckboxes); }); - // tab groups - Array.from(document.getElementsByClassName('tab-group')) - .forEach(t => new TabGroup(t)); - // handle aria settings on menus Array.from(document.getElementsByClassName('pulldown-menu')) .forEach(t => t.onclick = toggleMenu); @@ -174,258 +170,3 @@ function removeClass(el, className) { } el.className = classes.join(' '); } - -/* -* The content below is licensed according to the W3C Software License at -* https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document -* Heavily modified to web component by Zach Leatherman -* Modified back to vanilla JavaScript with support for Bulma markup and nested tabs by Ned Zimmerman -*/ -class TabGroup { - constructor(container) { - this.container = container; - - this.tablist = this.container.querySelector('[role="tablist"]'); - this.buttons = this.tablist.querySelectorAll('[role="tab"]'); - this.panels = this.container.querySelectorAll(':scope > [role="tabpanel"]'); - this.delay = this.determineDelay(); - - if(!this.tablist || !this.buttons.length || !this.panels.length) { - return; - } - - this.keys = this.keys(); - this.direction = this.direction(); - this.initButtons(); - this.initPanels(); - } - - keys() { - return { - end: 35, - home: 36, - left: 37, - up: 38, - right: 39, - down: 40 - }; - } - - // Add or substract depending on key pressed - direction() { - return { - 37: -1, - 38: -1, - 39: 1, - 40: 1 - }; - } - - initButtons() { - let count = 0; - for(let button of this.buttons) { - let isSelected = button.getAttribute("aria-selected") === "true"; - button.setAttribute("tabindex", isSelected ? "0" : "-1"); - - button.addEventListener('click', this.clickEventListener.bind(this)); - button.addEventListener('keydown', this.keydownEventListener.bind(this)); - button.addEventListener('keyup', this.keyupEventListener.bind(this)); - - button.index = count++; - } - } - - initPanels() { - let selectedPanelId = this.tablist.querySelector('[role="tab"][aria-selected="true"]').getAttribute("aria-controls"); - for(let panel of this.panels) { - if(panel.getAttribute("id") !== selectedPanelId) { - panel.setAttribute("hidden", ""); - } - panel.setAttribute("tabindex", "0"); - } - } - - clickEventListener(event) { - let button = event.target.closest('a'); - - event.preventDefault(); - - this.activateTab(button, false); - } - - // Handle keydown on tabs - keydownEventListener(event) { - var key = event.keyCode; - - switch (key) { - case this.keys.end: - event.preventDefault(); - // Activate last tab - this.activateTab(this.buttons[this.buttons.length - 1]); - break; - case this.keys.home: - event.preventDefault(); - // Activate first tab - this.activateTab(this.buttons[0]); - break; - - // Up and down are in keydown - // because we need to prevent page scroll >:) - case this.keys.up: - case this.keys.down: - this.determineOrientation(event); - break; - } - } - - // Handle keyup on tabs - keyupEventListener(event) { - var key = event.keyCode; - - switch (key) { - case this.keys.left: - case this.keys.right: - this.determineOrientation(event); - break; - } - } - - // When a tablist’s aria-orientation is set to vertical, - // only up and down arrow should function. - // In all other cases only left and right arrow function. - determineOrientation(event) { - var key = event.keyCode; - var vertical = this.tablist.getAttribute('aria-orientation') == 'vertical'; - var proceed = false; - - if (vertical) { - if (key === this.keys.up || key === this.keys.down) { - event.preventDefault(); - proceed = true; - } - } - else { - if (key === this.keys.left || key === this.keys.right) { - proceed = true; - } - } - - if (proceed) { - this.switchTabOnArrowPress(event); - } - } - - // Either focus the next, previous, first, or last tab - // depending on key pressed - switchTabOnArrowPress(event) { - var pressed = event.keyCode; - - for (let button of this.buttons) { - button.addEventListener('focus', this.focusEventHandler.bind(this)); - } - - if (this.direction[pressed]) { - var target = event.target; - if (target.index !== undefined) { - if (this.buttons[target.index + this.direction[pressed]]) { - this.buttons[target.index + this.direction[pressed]].focus(); - } - else if (pressed === this.keys.left || pressed === this.keys.up) { - this.focusLastTab(); - } - else if (pressed === this.keys.right || pressed == this.keys.down) { - this.focusFirstTab(); - } - } - } - } - - // Activates any given tab panel - activateTab (tab, setFocus) { - if(tab.getAttribute("role") !== "tab") { - tab = tab.closest('[role="tab"]'); - } - - setFocus = setFocus || true; - - // Deactivate all other tabs - this.deactivateTabs(); - - // Remove tabindex attribute - tab.removeAttribute('tabindex'); - - // Set the tab as selected - tab.setAttribute('aria-selected', 'true'); - - // Give the tab parent an is-active class - tab.parentNode.classList.add('is-active'); - - // Get the value of aria-controls (which is an ID) - var controls = tab.getAttribute('aria-controls'); - - // Remove hidden attribute from tab panel to make it visible - document.getElementById(controls).removeAttribute('hidden'); - - // Set focus when required - if (setFocus) { - tab.focus(); - } - } - - // Deactivate all tabs and tab panels - deactivateTabs() { - for (let button of this.buttons) { - button.parentNode.classList.remove('is-active'); - button.setAttribute('tabindex', '-1'); - button.setAttribute('aria-selected', 'false'); - button.removeEventListener('focus', this.focusEventHandler.bind(this)); - } - - for (let panel of this.panels) { - panel.setAttribute('hidden', 'hidden'); - } - } - - focusFirstTab() { - this.buttons[0].focus(); - } - - focusLastTab() { - this.buttons[this.buttons.length - 1].focus(); - } - - // Determine whether there should be a delay - // when user navigates with the arrow keys - determineDelay() { - var hasDelay = this.tablist.hasAttribute('data-delay'); - var delay = 0; - - if (hasDelay) { - var delayValue = this.tablist.getAttribute('data-delay'); - if (delayValue) { - delay = delayValue; - } - else { - // If no value is specified, default to 300ms - delay = 300; - } - } - - return delay; - } - - focusEventHandler(event) { - var target = event.target; - - setTimeout(this.checkTabFocus.bind(this), this.delay, target); - } - - // Only activate tab on focus if it still has focus after the delay - checkTabFocus(target) { - let focused = document.activeElement; - - if (target === focused) { - this.activateTab(target, false); - } - } -} diff --git a/bookwyrm/static/js/tabs.js b/bookwyrm/static/js/tabs.js new file mode 100644 index 000000000..e32312a3a --- /dev/null +++ b/bookwyrm/static/js/tabs.js @@ -0,0 +1,261 @@ +// tab groups +window.onload = function() { + Array.from(document.getElementsByClassName('tab-group')) + .forEach(t => new TabGroup(t)); +}; + + +/* +* The content below is licensed according to the W3C Software License at +* https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document +* Heavily modified to web component by Zach Leatherman +* Modified back to vanilla JavaScript with support for Bulma markup and nested tabs by Ned Zimmerman +*/ +class TabGroup { + constructor(container) { + this.container = container; + + this.tablist = this.container.querySelector('[role="tablist"]'); + this.buttons = this.tablist.querySelectorAll('[role="tab"]'); + this.panels = this.container.querySelectorAll(':scope > [role="tabpanel"]'); + this.delay = this.determineDelay(); + + if(!this.tablist || !this.buttons.length || !this.panels.length) { + return; + } + + this.keys = this.keys(); + this.direction = this.direction(); + this.initButtons(); + this.initPanels(); + } + + keys() { + return { + end: 35, + home: 36, + left: 37, + up: 38, + right: 39, + down: 40 + }; + } + + // Add or substract depending on key pressed + direction() { + return { + 37: -1, + 38: -1, + 39: 1, + 40: 1 + }; + } + + initButtons() { + let count = 0; + for(let button of this.buttons) { + let isSelected = button.getAttribute("aria-selected") === "true"; + button.setAttribute("tabindex", isSelected ? "0" : "-1"); + + button.addEventListener('click', this.clickEventListener.bind(this)); + button.addEventListener('keydown', this.keydownEventListener.bind(this)); + button.addEventListener('keyup', this.keyupEventListener.bind(this)); + + button.index = count++; + } + } + + initPanels() { + let selectedPanelId = this.tablist.querySelector('[role="tab"][aria-selected="true"]').getAttribute("aria-controls"); + for(let panel of this.panels) { + if(panel.getAttribute("id") !== selectedPanelId) { + panel.setAttribute("hidden", ""); + } + panel.setAttribute("tabindex", "0"); + } + } + + clickEventListener(event) { + let button = event.target.closest('a'); + + event.preventDefault(); + + this.activateTab(button, false); + } + + // Handle keydown on tabs + keydownEventListener(event) { + var key = event.keyCode; + + switch (key) { + case this.keys.end: + event.preventDefault(); + // Activate last tab + this.activateTab(this.buttons[this.buttons.length - 1]); + break; + case this.keys.home: + event.preventDefault(); + // Activate first tab + this.activateTab(this.buttons[0]); + break; + + // Up and down are in keydown + // because we need to prevent page scroll >:) + case this.keys.up: + case this.keys.down: + this.determineOrientation(event); + break; + } + } + + // Handle keyup on tabs + keyupEventListener(event) { + var key = event.keyCode; + + switch (key) { + case this.keys.left: + case this.keys.right: + this.determineOrientation(event); + break; + } + } + + // When a tablist’s aria-orientation is set to vertical, + // only up and down arrow should function. + // In all other cases only left and right arrow function. + determineOrientation(event) { + var key = event.keyCode; + var vertical = this.tablist.getAttribute('aria-orientation') == 'vertical'; + var proceed = false; + + if (vertical) { + if (key === this.keys.up || key === this.keys.down) { + event.preventDefault(); + proceed = true; + } + } + else { + if (key === this.keys.left || key === this.keys.right) { + proceed = true; + } + } + + if (proceed) { + this.switchTabOnArrowPress(event); + } + } + + // Either focus the next, previous, first, or last tab + // depending on key pressed + switchTabOnArrowPress(event) { + var pressed = event.keyCode; + + for (let button of this.buttons) { + button.addEventListener('focus', this.focusEventHandler.bind(this)); + } + + if (this.direction[pressed]) { + var target = event.target; + if (target.index !== undefined) { + if (this.buttons[target.index + this.direction[pressed]]) { + this.buttons[target.index + this.direction[pressed]].focus(); + } + else if (pressed === this.keys.left || pressed === this.keys.up) { + this.focusLastTab(); + } + else if (pressed === this.keys.right || pressed == this.keys.down) { + this.focusFirstTab(); + } + } + } + } + + // Activates any given tab panel + activateTab (tab, setFocus) { + if(tab.getAttribute("role") !== "tab") { + tab = tab.closest('[role="tab"]'); + } + + setFocus = setFocus || true; + + // Deactivate all other tabs + this.deactivateTabs(); + + // Remove tabindex attribute + tab.removeAttribute('tabindex'); + + // Set the tab as selected + tab.setAttribute('aria-selected', 'true'); + + // Give the tab parent an is-active class + tab.parentNode.classList.add('is-active'); + + // Get the value of aria-controls (which is an ID) + var controls = tab.getAttribute('aria-controls'); + + // Remove hidden attribute from tab panel to make it visible + document.getElementById(controls).removeAttribute('hidden'); + + // Set focus when required + if (setFocus) { + tab.focus(); + } + } + + // Deactivate all tabs and tab panels + deactivateTabs() { + for (let button of this.buttons) { + button.parentNode.classList.remove('is-active'); + button.setAttribute('tabindex', '-1'); + button.setAttribute('aria-selected', 'false'); + button.removeEventListener('focus', this.focusEventHandler.bind(this)); + } + + for (let panel of this.panels) { + panel.setAttribute('hidden', 'hidden'); + } + } + + focusFirstTab() { + this.buttons[0].focus(); + } + + focusLastTab() { + this.buttons[this.buttons.length - 1].focus(); + } + + // Determine whether there should be a delay + // when user navigates with the arrow keys + determineDelay() { + var hasDelay = this.tablist.hasAttribute('data-delay'); + var delay = 0; + + if (hasDelay) { + var delayValue = this.tablist.getAttribute('data-delay'); + if (delayValue) { + delay = delayValue; + } + else { + // If no value is specified, default to 300ms + delay = 300; + } + } + + return delay; + } + + focusEventHandler(event) { + var target = event.target; + + setTimeout(this.checkTabFocus.bind(this), this.delay, target); + } + + // Only activate tab on focus if it still has focus after the delay + checkTabFocus(target) { + let focused = document.activeElement; + + if (target === focused) { + this.activateTab(target, false); + } + } +} diff --git a/bookwyrm/templates/feed/feed_layout.html b/bookwyrm/templates/feed/feed_layout.html index 04826a64d..24294e5d0 100644 --- a/bookwyrm/templates/feed/feed_layout.html +++ b/bookwyrm/templates/feed/feed_layout.html @@ -91,3 +91,6 @@ {% endblock %} +{% block scripts %} + +{% endblock %} diff --git a/bookwyrm/templates/layout.html b/bookwyrm/templates/layout.html index 7b0058539..c7d10b573 100644 --- a/bookwyrm/templates/layout.html +++ b/bookwyrm/templates/layout.html @@ -213,5 +213,6 @@ var csrf_token = '{{ csrf_token }}'; +{% block scripts %}{% endblock %}