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Diffstat (limited to 'pydis_site/static/js/base/modal.js')
-rw-r--r-- | pydis_site/static/js/base/modal.js | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/pydis_site/static/js/base/modal.js b/pydis_site/static/js/base/modal.js new file mode 100644 index 00000000..eccc8845 --- /dev/null +++ b/pydis_site/static/js/base/modal.js @@ -0,0 +1,100 @@ +/* + modal.js: A simple way to wire up Bulma modals. + + This library is intended to be used with Bulma's modals, as described in the + official Bulma documentation. It's based on the JavaScript that Bulma + themselves use for this purpose on the modals documentation page. + + Note that, just like that piece of JavaScript, this library assumes that + you will only ever want to have one modal open at once. + */ + +"use strict"; + +// Event handler for the "esc" key, for closing modals. + +document.addEventListener("keydown", (event) => { + const e = event || window.event; + + if (e.code === "Escape" || e.keyCode === 27) { + closeModals(); + } +}); + +// An array of all the modal buttons we've already set up + +const modal_buttons = []; + +// Public API functions + +function setupModal(target) { + // Set up a modal's events, given a DOM element. This can be + // used later in order to set up a modal that was added after + // this library has been run. + + // We need to collect a bunch of elements to work with + const modal_background = Array.from(target.getElementsByClassName("modal-background")); + const modal_close = Array.from(target.getElementsByClassName("modal-close")); + + const modal_head = Array.from(target.getElementsByClassName("modal-card-head")); + const modal_foot = Array.from(target.getElementsByClassName("modal-card-foot")); + + const modal_delete = []; + const modal_button = []; + + modal_head.forEach((element) => modal_delete.concat(Array.from(element.getElementsByClassName("delete")))); + modal_foot.forEach((element) => modal_button.concat(Array.from(element.getElementsByClassName("button")))); + + // Collect all the elements that can be used to close modals + const modal_closers = modal_background.concat(modal_close).concat(modal_delete).concat(modal_button); + + // Assign click events for closing modals + modal_closers.forEach((element) => { + element.addEventListener("click", () => { + closeModals(); + }); + }); + + setupOpeningButtons(); +} + +function setupOpeningButtons() { + // Wire up all the opening buttons, avoiding buttons we've already wired up. + const modal_opening_buttons = Array.from(document.getElementsByClassName("modal-button")); + + modal_opening_buttons.forEach((element) => { + if (!modal_buttons.includes(element)) { + element.addEventListener("click", () => { + openModal(element.dataset.target); + }); + + modal_buttons.push(element); + } + }); +} + +function openModal(target) { + // Open a modal, given a string ID + const element = document.getElementById(target); + + document.documentElement.classList.add("is-clipped"); + element.classList.add("is-active"); +} + +function closeModals() { + // Close all open modals + const modals = Array.from(document.getElementsByClassName("modal")); + document.documentElement.classList.remove("is-clipped"); + + modals.forEach((element) => { + element.classList.remove("is-active"); + }); +} + +(function () { + // Set up all the modals currently on the page + const modals = Array.from(document.getElementsByClassName("modal")); + + modals.forEach((modal) => setupModal(modal)); + setupOpeningButtons(); +}()); |