diff options
Diffstat (limited to 'input/select.js')
| -rw-r--r-- | input/select.js | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/input/select.js b/input/select.js new file mode 100644 index 0000000..ba8b919 --- /dev/null +++ b/input/select.js @@ -0,0 +1,152 @@ +// SPDX-FileCopyrightText: 2021 M. Shulhan <ms@kilabit.info> +// SPDX-License-Identifier: GPL-3.0-or-later +const WUI_INPUT_SELECT_CLASS = "wui_input_select"; +const WUI_INPUT_SELECT_CLASS_HINT = "wui_input_select_hint"; +const WUI_INPUT_SELECT_CLASS_HINT_TOGGLER = "wui_input_select_hint_toggler"; +const WUI_INPUT_SELECT_CLASS_INPUT = "wui_input_select_input"; +const WUI_INPUT_SELECT_CLASS_LABEL = "wui_input_select_label"; +// WuiInputSelect create an HTML input for selecting one more item. +// +// Format of generated HTML output, +// +// <div [id=${id}] class="${WUI_INPUT_SELECT_CLASS}"> +// <div> +// <label class="${WUI_INPUT_SELECT_CLASS_LABEL} [${class_label}]"> +// ${label} | HTMLElement +// </label> +// <select +// name=${name} +// class="${WUI_INPUT_SELECT_CLASS_INPUT} [${class_input}]" +// [disabled=${is_disabled}] +// > +// <option value="${options[key].value}">${key in options}</option> +// </select> +// [<span class="${WUI_INPUT_SELECT_CLASS_HINT_TOGGLER}">i </span>] +// </div> +// [<div class="${WUI_INPUT_SELECT_CLASS_HINT}">${hint}</div>] +// </div> +// +// The "hint" option is optional, if it set the input will have a hint toggler +// to display or hide the input information. +// +// User can set onChangeHandler to receive new value when the input value +// changes. +export class WuiInputSelect { + constructor(opts) { + this.opts = opts; + this.value_key = {}; // The reverse of options.options + this.value = ""; + this.el = document.createElement("div"); + if (opts.id) { + this.el.id = opts.id; + } + this.el.classList.add(WUI_INPUT_SELECT_CLASS); + this.el.style.padding = "2px"; + const wrapper = document.createElement("div"); + this.generateLabel(wrapper); + this.generateInput(wrapper); + if (opts.hint) { + this.generateHintToggler(wrapper); + } + this.el.appendChild(wrapper); + if (opts.hint) { + this.generateHint(); + } + } + generateLabel(wrapper) { + this.el_label = document.createElement("label"); + this.el_label.classList.add(WUI_INPUT_SELECT_CLASS_LABEL); + if (this.opts.class_label) { + this.el_label.classList.add(this.opts.class_label); + } + if (typeof this.opts.label === "string") { + this.el_label.innerHTML = `${this.opts.label} `; + } + else { + this.el_label.appendChild(this.opts.label); + } + wrapper.appendChild(this.el_label); + } + generateInput(wrapper) { + this.el_input = document.createElement("select"); + this.el_input.name = this.opts.name; + this.el_input.classList.add(WUI_INPUT_SELECT_CLASS_INPUT); + if (this.opts.class_input) { + this.el_input.classList.add(this.opts.class_input); + } + Object.entries(this.opts.options).forEach(([key, option]) => { + const elOption = document.createElement("option"); + elOption.value = option.value; + elOption.innerHTML = key; + if (option.selected) { + elOption.selected = true; + } + this.el_input.appendChild(elOption); + this.value_key[option.value] = key; + }); + if (this.opts.is_disabled) { + this.el_input.disabled = true; + } + if (this.opts.onChangeHandler) { + this.el_input.onclick = (ev) => { + ev.preventDefault(); + ev.stopPropagation(); + this.onClickInput(); + }; + } + wrapper.appendChild(this.el_input); + } + generateHintToggler(wrapper) { + this.el_hint_toggler = document.createElement("span"); + this.el_hint_toggler.classList.add(WUI_INPUT_SELECT_CLASS_HINT_TOGGLER); + this.el_hint_toggler.innerHTML = " ℹ"; + this.el_hint_toggler.onmouseover = () => { + this.el_hint_toggler.style.cursor = "pointer"; + }; + this.el_hint_toggler.onclick = () => { + this.onClickHintToggler(); + }; + wrapper.appendChild(this.el_hint_toggler); + } + generateHint() { + this.el_hint = document.createElement("div"); + this.el_hint.classList.add(WUI_INPUT_SELECT_CLASS_HINT); + this.el_hint.innerHTML = this.opts.hint || ""; + if (this.opts.is_hint_toggled) { + this.el_hint.style.display = "block"; + } + else { + this.el_hint.style.display = "none"; + } + this.el_hint.style.borderRadius = "2px"; + this.el_hint.style.padding = "4px"; + this.el_hint.style.marginTop = "2px"; + this.el.appendChild(this.el_hint); + } + onClickHintToggler() { + if (this.el_hint.style.display === "none") { + this.el_hint.style.display = "block"; + } + else { + this.el_hint.style.display = "none"; + } + } + onClickInput() { + if (!this.opts.onChangeHandler) { + return false; + } + const value = this.el_input.value; + if (this.value !== value) { + const key = this.value_key[value]; + if (key) { + this.opts.onChangeHandler(key, value); + this.value = value; + } + } + return true; + } + // set the input value. + set(v) { + this.el_input.value = v; + } +} |