515 lines
16 KiB
JavaScript
515 lines
16 KiB
JavaScript
const common = {};
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common.INPUT_TYPES = new Set(["INPUT", "TEXTAREA"]);
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common._request =
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function _request(method, url, callback)
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{
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const request = new XMLHttpRequest();
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const response = {
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"completed": false,
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};
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request.onreadystatechange = function()
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{
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if (request.readyState != 4)
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{return;}
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if (callback == null)
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{return;}
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response.meta = {
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"request_url": url,
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"status": request.status
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}
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if (request.status != 0)
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{
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response.completed = true;
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try
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{
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response.data = JSON.parse(request.responseText);
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response.meta.json_ok = true;
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}
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catch (exc)
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{
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response.meta.json_ok = false;
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}
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}
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callback(response);
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};
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const asynchronous = true;
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request.open(method, url, asynchronous);
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return request;
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}
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common.get =
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function get(url, callback)
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{
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request = common._request("GET", url, callback);
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request.send();
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}
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common.post =
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function post(url, data, callback)
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{
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request = common._request("POST", url, callback);
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request.send(data);
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}
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common.bind_box_to_button =
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function bind_box_to_button(box, button, ctrl_enter)
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{
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/*
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Bind a textbox to a button so that pressing Enter within the textbox is the
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same as clicking the button.
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If `ctrl_enter` is true, then you must press ctrl+Enter to trigger the
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button, which is important for textareas.
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Thanks Yaroslav Yakovlev
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http://stackoverflow.com/a/9343095
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*/
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const bound_box_hook = function(event)
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{
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if (event.key !== "Enter")
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{return;}
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ctrl_success = !ctrl_enter || (event.ctrlKey);
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if (! ctrl_success)
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{return;}
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button.click();
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}
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box.addEventListener("keyup", bound_box_hook);
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}
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common.create_message_bubble =
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function create_message_bubble(message_area, message_positivity, message_text, lifespan)
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{
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if (lifespan === undefined)
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{
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lifespan = 8000;
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}
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const message = document.createElement("div");
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message.className = "message_bubble " + message_positivity;
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const span = document.createElement("span");
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span.innerHTML = message_text;
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message.appendChild(span);
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message_area.appendChild(message);
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setTimeout(function(){message_area.removeChild(message);}, lifespan);
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}
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common.delete_all_children =
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function delete_all_children(element)
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{
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while (element.firstChild)
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{
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element.removeChild(element.firstChild);
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}
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}
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common.entry_with_history_hook =
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function entry_with_history_hook(event)
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{
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const box = event.target;
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if (box.entry_history === undefined)
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{box.entry_history = [];}
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if (box.entry_history_pos === undefined)
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{box.entry_history_pos = null;}
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if (event.key === "Enter")
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{
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if (box.value === "")
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{return;}
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box.entry_history.push(box.value);
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box.entry_history_pos = null;
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}
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else if (event.key === "Escape")
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{
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box.entry_history_pos = null;
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box.value = "";
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}
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if (box.entry_history.length == 0)
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{return}
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if (box.entry_history_pos !== null && box.value !== box.entry_history[box.entry_history_pos])
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{return;}
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if (event.key === "ArrowUp")
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{
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if (box.entry_history_pos === null)
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{box.entry_history_pos = box.entry_history.length - 1;}
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else if (box.entry_history_pos == 0)
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{;}
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else
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{box.entry_history_pos -= 1;}
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if (box.entry_history_pos === null)
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{box.value = "";}
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else
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{box.value = box.entry_history[box.entry_history_pos];}
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setTimeout(function(){box.selectionStart = box.value.length;}, 0);
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}
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else if (event.key === "ArrowDown")
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{
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if (box.entry_history_pos === null)
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{;}
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else if (box.entry_history_pos == box.entry_history.length-1)
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{box.entry_history_pos = null;}
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else
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{box.entry_history_pos += 1;}
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if (box.entry_history_pos === null)
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{box.value = "";}
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else
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{box.value = box.entry_history[box.entry_history_pos];}
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setTimeout(function(){box.selectionStart = box.value.length;}, 0);
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}
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}
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common.html_to_element =
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function html_to_element(html)
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{
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const template = document.createElement("template");
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template.innerHTML = html.trim();
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return template.content.firstElementChild;
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}
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common.init_atag_merge_params =
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function init_atag_merge_params(a)
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{
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/*
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To create an <a> tag where the ?parameters written on the href are merged
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with the parameters of the current page URL, give it the class
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"merge_params". If the URL and href contain the same parameter, the href
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takes priority.
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Optional:
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data-merge-params: A whitelist of parameter names, separated by commas
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or spaces. Only these parameters will be merged from the page URL.
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data-merge-params-except: A blacklist of parameter names, separated by
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commas or spaces. All parameters except these will be merged from
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the page URL.
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Example:
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URL: ?filter=hello&orderby=score
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href: "?orderby=date"
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Result: "?filter=hello&orderby=date"
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*/
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const page_params = Array.from(new URLSearchParams(window.location.search));
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let to_merge;
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if (a.dataset.mergeParams)
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{
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const keep = new Set(a.dataset.mergeParams.split(/[\s,]+/));
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to_merge = page_params.filter(key_value => keep.has(key_value[0]));
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delete a.dataset.mergeParams;
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}
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else if (a.dataset.mergeParamsExcept)
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{
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const remove = new Set(a.dataset.mergeParamsExcept.split(/[\s,]+/));
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to_merge = page_params.filter(key_value => (! remove.has(key_value[0])));
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delete a.dataset.mergeParamsExcept;
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}
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else
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{
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to_merge = page_params;
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}
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to_merge = to_merge.concat(Array.from(new URLSearchParams(a.search)));
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const new_params = new URLSearchParams();
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for (const [key, value] of to_merge)
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{ new_params.set(key, value); }
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a.search = new_params.toString();
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a.classList.remove("merge_params");
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}
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common.init_all_atag_merge_params =
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function init_all_atag_merge_params()
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{
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const page_params = Array.from(new URLSearchParams(window.location.search));
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const as = Array.from(document.getElementsByClassName("merge_params"));
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for (const a of as)
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{
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setTimeout(() => common.init_atag_merge_params(a), 0);
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}
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}
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common.init_button_with_confirm =
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function init_button_with_confirm(button)
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{
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/*
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To create a button that requires a second confirmation step, assign it the
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class "button_with_confirm".
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Required:
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data-onclick: String that would normally be the button's onclick.
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This is done so that if the button_with_confirm fails to initialize,
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the button will be non-operational as opposed to being operational
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but with no confirmation. For dangerous actions I think this is a
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worthwhile move though it could lead to feature downtime.
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Optional:
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data-prompt: Text that appears next to the confirm button. Default is
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"Are you sure?".
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data-prompt-class: CSS class for the prompt span.
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data-confirm: Text inside the confirm button. Default is to inherit the
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original button's text.
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data-confirm-class: CSS class for the confirm button. Default is to
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inheret all classes of the original button, except for
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"button_with_confirm" of course.
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data-cancel: Text inside the cancel button. Default is "Cancel".
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data-cancel-class: CSS class for the cancel button.
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data-holder-class: CSS class for the new span that holds the menu.
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*/
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button.classList.remove("button_with_confirm");
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const holder = document.createElement("span");
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holder.className = "confirm_holder " + (button.dataset.holderClass || "");
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button.parentElement.insertBefore(holder, button);
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const holder_stage1 = document.createElement("span");
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holder_stage1.className = "confirm_holder_stage1";
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holder_stage1.appendChild(button);
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holder.appendChild(holder_stage1);
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const holder_stage2 = document.createElement("span");
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holder_stage2.className = "confirm_holder_stage2 hidden";
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holder.appendChild(holder_stage2);
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let prompt;
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let input_source;
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if (button.dataset.isInput)
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{
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prompt = document.createElement("input");
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prompt.placeholder = button.dataset.prompt || "";
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input_source = prompt;
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}
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else
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{
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prompt = document.createElement("span");
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prompt.innerText = (button.dataset.prompt || "Are you sure?") + " ";
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input_source = undefined;
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}
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prompt.className = button.dataset.promptClass || "";
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holder_stage2.appendChild(prompt)
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delete button.dataset.prompt;
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delete button.dataset.promptClass;
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const button_confirm = document.createElement("button");
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button_confirm.innerText = (button.dataset.confirm || button.innerText).trim();
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if (button.dataset.confirmClass === undefined)
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{
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button_confirm.className = button.className;
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button_confirm.classList.remove("button_with_confirm");
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}
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else
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{
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button_confirm.className = button.dataset.confirmClass;
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}
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button_confirm.input_source = input_source;
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holder_stage2.appendChild(button_confirm);
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holder_stage2.appendChild(document.createTextNode(" "));
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if (button.dataset.isInput)
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{
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common.bind_box_to_button(prompt, button_confirm);
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}
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delete button.dataset.confirm;
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delete button.dataset.confirmClass;
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delete button.dataset.isInput;
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const button_cancel = document.createElement("button");
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button_cancel.innerText = button.dataset.cancel || "Cancel";
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button_cancel.className = button.dataset.cancelClass || "";
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holder_stage2.appendChild(button_cancel);
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delete button.dataset.cancel;
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delete button.dataset.cancelClass;
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// If this is stupid, let me know.
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const confirm_onclick = `
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let holder = event.target.parentElement.parentElement;
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holder.getElementsByClassName("confirm_holder_stage1")[0].classList.remove("hidden");
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holder.getElementsByClassName("confirm_holder_stage2")[0].classList.add("hidden");
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` + button.dataset.onclick;
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button_confirm.onclick = Function(confirm_onclick);
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button.removeAttribute("onclick");
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button.onclick = function(event)
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{
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const holder = event.target.parentElement.parentElement;
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holder.getElementsByClassName("confirm_holder_stage1")[0].classList.add("hidden");
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holder.getElementsByClassName("confirm_holder_stage2")[0].classList.remove("hidden");
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const input = holder.getElementsByTagName("input")[0];
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if (input)
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{
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input.focus();
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}
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}
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button_cancel.onclick = function(event)
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{
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const holder = event.target.parentElement.parentElement;
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holder.getElementsByClassName("confirm_holder_stage1")[0].classList.remove("hidden");
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holder.getElementsByClassName("confirm_holder_stage2")[0].classList.add("hidden");
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}
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delete button.dataset.onclick;
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}
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common.init_all_button_with_confirm =
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function init_all_button_with_confirm()
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{
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const buttons = Array.from(document.getElementsByClassName("button_with_confirm"));
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for (const button of buttons)
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{
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setTimeout(() => common.init_button_with_confirm(button), 0);
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}
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}
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common.init_enable_on_pageload =
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function init_enable_on_pageload(element)
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{
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/*
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To create an input element which is disabled at first, and is enabled when
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the DOM has completed loading, give it the disabled attribute and the
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class "enable_on_pageload".
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*/
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element.disabled = false;
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element.classList.remove("enable_on_pageload");
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}
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common.init_all_enable_on_pageload =
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function init_all_enable_on_pageload()
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{
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const elements = Array.from(document.getElementsByClassName("enable_on_pageload"));
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for (const element of elements)
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{
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setTimeout(() => common.init_enable_on_pageload(element), 0);
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}
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}
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common.init_entry_with_history =
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function init_entry_with_history(input)
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{
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input.addEventListener("keydown", common.entry_with_history_hook);
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input.classList.remove("entry_with_history");
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}
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common.init_all_entry_with_history =
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function init_all_entry_with_history()
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{
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const inputs = Array.from(document.getElementsByClassName("entry_with_history"));
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for (const input of inputs)
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{
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setTimeout(() => common.init_entry_with_history(input), 0);
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}
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}
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common.init_tabbed_container =
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function init_tabbed_container(tabbed_container)
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{
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const button_container = document.createElement("div");
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button_container.className = "tab_buttons";
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tabbed_container.prepend(button_container);
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const tabs = Array.from(tabbed_container.getElementsByClassName("tab"));
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for (const tab of tabs)
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{
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tab.classList.add("hidden");
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const tab_id = tab.dataset.tabId || tab.dataset.tabTitle;
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tab.dataset.tabId = tab_id;
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tab.style.borderTopColor = "transparent";
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const button = document.createElement("button");
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button.className = "tab_button tab_button_inactive";
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button.onclick = common.tabbed_container_switcher;
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button.innerText = tab.dataset.tabTitle;
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button.dataset.tabId = tab_id;
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button_container.append(button);
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}
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tabs[0].classList.remove("hidden");
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button_container.firstElementChild.classList.remove("tab_button_inactive");
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button_container.firstElementChild.classList.add("tab_button_active");
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}
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common.init_all_tabbed_container =
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function init_all_tabbed_container()
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{
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const tabbed_containers = Array.from(document.getElementsByClassName("tabbed_container"));
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for (const tabbed_container of tabbed_containers)
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{
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setTimeout(() => common.init_tabbed_container(tabbed_container), 0);
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}
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}
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common.is_narrow_mode =
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function is_narrow_mode()
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{
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return getComputedStyle(document.documentElement).getPropertyValue("--narrow").trim() === "1";
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}
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common.is_wide_mode =
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function is_wide_mode()
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{
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return getComputedStyle(document.documentElement).getPropertyValue("--wide").trim() === "1";
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}
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common.tabbed_container_switcher =
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function tabbed_container_switcher(event)
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{
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const tab_button = event.target;
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if (tab_button.classList.contains("tab_button_active"))
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{ return; }
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const tab_id = tab_button.dataset.tabId;
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const tab_buttons = tab_button.parentElement.getElementsByClassName("tab_button");
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const tabs = tab_button.parentElement.parentElement.getElementsByClassName("tab");
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for (const tab_button of tab_buttons)
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{
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if (tab_button.dataset.tabId === tab_id)
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{
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tab_button.classList.remove("tab_button_inactive");
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tab_button.classList.add("tab_button_active");
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}
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else
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{
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tab_button.classList.remove("tab_button_active");
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tab_button.classList.add("tab_button_inactive");
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}
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}
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for (const tab of tabs)
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{
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if (tab.dataset.tabId === tab_id)
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{ tab.classList.remove("hidden"); }
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else
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{ tab.classList.add("hidden"); }
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}
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}
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common.refresh =
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function refresh()
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{
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window.location.reload();
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}
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common.on_pageload =
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function on_pageload()
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{
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common.init_all_atag_merge_params();
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common.init_all_button_with_confirm();
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common.init_all_enable_on_pageload();
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common.init_all_entry_with_history();
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common.init_all_tabbed_container();
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}
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document.addEventListener("DOMContentLoaded", common.on_pageload);
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