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mldong-flow-designer-plus

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本项目包含了作者为B站课堂视频[《工作流设计器开发最佳实践》](https://www.bilibili.com/cheese/play/ss24484)的过程源码。教程中开发的组件也可用于实际生产环境中。以下是和使用文档和课程章节说明。 ## 实战项目 [演示地址](https://flow-pro.mldong.com/)

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import { computed, getCurrentInstance, defineComponent, useAttrs as useAttrs$1, useSlots, shallowRef, ref, watch, nextTick, onMounted, toRef, openBlock, createElementBlock, normalizeClass, unref, normalizeStyle, createCommentVNode, Fragment, renderSlot, createElementVNode, createBlock, withCtx, resolveDynamicComponent, mergeProps, withModifiers, createVNode, toDisplayString } from "vue"; import { u as useResizeObserver } from "./index-B5MEhWj_.js"; import { i as iconPropType, V as ValidateComponentsMap, v as view_default, h as hide_default, E as ElIcon, a as circle_close_default } from "./icon-DV3tCSN7.js"; import { h as isClient, j as isNumber, b as buildProps, d as definePropType, c as isString, f as debugWarn, u as useNamespace, N as NOOP, k as isObject, _ as _export_sfc, w as withInstall } from "./install-La2G4dPY.js"; import { u as useSizeProp } from "./index-CLW2rQKZ.js"; import { m as mutable } from "./typescript-D6L75muK.js"; import { u as useAriaProps } from "./index-Ds80FYRq.js"; import { U as UPDATE_MODEL_EVENT } from "./event-DSz0kuqc.js"; import { h as fromPairs, j as isNil } from "./index-BLhyZWKY.js"; import { u as useFormItem, e as useFormItemInputId, a as useFormSize, b as useFormDisabled } from "./use-form-common-props-BwON8RcZ.js"; import { u as useFocusController, a as useComposition } from "./index-BVZ8Smzo.js"; const isFirefox = () => isClient && /firefox/i.test(window.navigator.userAgent); let hiddenTextarea = void 0; const HIDDEN_STYLE = ` height:0 !important; visibility:hidden !important; ${isFirefox() ? "" : "overflow:hidden !important;"} position:absolute !important; z-index:-1000 !important; top:0 !important; right:0 !important; `; const CONTEXT_STYLE = [ "letter-spacing", "line-height", "padding-top", "padding-bottom", "font-family", "font-weight", "font-size", "text-rendering", "text-transform", "width", "text-indent", "padding-left", "padding-right", "border-width", "box-sizing" ]; function calculateNodeStyling(targetElement) { const style = window.getComputedStyle(targetElement); const boxSizing = style.getPropertyValue("box-sizing"); const paddingSize = Number.parseFloat(style.getPropertyValue("padding-bottom")) + Number.parseFloat(style.getPropertyValue("padding-top")); const borderSize = Number.parseFloat(style.getPropertyValue("border-bottom-width")) + Number.parseFloat(style.getPropertyValue("border-top-width")); const contextStyle = CONTEXT_STYLE.map((name) => `${name}:${style.getPropertyValue(name)}`).join(";"); return { contextStyle, paddingSize, borderSize, boxSizing }; } function calcTextareaHeight(targetElement, minRows = 1, maxRows) { var _a; if (!hiddenTextarea) { hiddenTextarea = document.createElement("textarea"); document.body.appendChild(hiddenTextarea); } const { paddingSize, borderSize, boxSizing, contextStyle } = calculateNodeStyling(targetElement); hiddenTextarea.setAttribute("style", `${contextStyle};${HIDDEN_STYLE}`); hiddenTextarea.value = targetElement.value || targetElement.placeholder || ""; let height = hiddenTextarea.scrollHeight; const result = {}; if (boxSizing === "border-box") { height = height + borderSize; } else if (boxSizing === "content-box") { height = height - paddingSize; } hiddenTextarea.value = ""; const singleRowHeight = hiddenTextarea.scrollHeight - paddingSize; if (isNumber(minRows)) { let minHeight = singleRowHeight * minRows; if (boxSizing === "border-box") { minHeight = minHeight + paddingSize + borderSize; } height = Math.max(minHeight, height); result.minHeight = `${minHeight}px`; } if (isNumber(maxRows)) { let maxHeight = singleRowHeight * maxRows; if (boxSizing === "border-box") { maxHeight = maxHeight + paddingSize + borderSize; } height = Math.min(maxHeight, height); } result.height = `${height}px`; (_a = hiddenTextarea.parentNode) == null ? void 0 : _a.removeChild(hiddenTextarea); hiddenTextarea = void 0; return result; } const inputProps = buildProps({ id: { type: String, default: void 0 }, size: useSizeProp, disabled: Boolean, modelValue: { type: definePropType([ String, Number, Object ]), default: "" }, maxlength: { type: [String, Number] }, minlength: { type: [String, Number] }, type: { type: String, default: "text" }, resize: { type: String, values: ["none", "both", "horizontal", "vertical"] }, autosize: { type: definePropType([Boolean, Object]), default: false }, autocomplete: { type: String, default: "off" }, formatter: { type: Function }, parser: { type: Function }, placeholder: { type: String }, form: { type: String }, readonly: Boolean, clearable: Boolean, showPassword: Boolean, showWordLimit: Boolean, suffixIcon: { type: iconPropType }, prefixIcon: { type: iconPropType }, containerRole: { type: String, default: void 0 }, tabindex: { type: [String, Number], default: 0 }, validateEvent: { type: Boolean, default: true }, inputStyle: { type: definePropType([Object, Array, String]), default: () => mutable({}) }, autofocus: Boolean, rows: { type: Number, default: 2 }, ...useAriaProps(["ariaLabel"]) }); const inputEmits = { [UPDATE_MODEL_EVENT]: (value) => isString(value), input: (value) => isString(value), change: (value) => isString(value), focus: (evt) => evt instanceof FocusEvent, blur: (evt) => evt instanceof FocusEvent, clear: () => true, mouseleave: (evt) => evt instanceof MouseEvent, mouseenter: (evt) => evt instanceof MouseEvent, keydown: (evt) => evt instanceof Event, compositionstart: (evt) => evt instanceof CompositionEvent, compositionupdate: (evt) => evt instanceof CompositionEvent, compositionend: (evt) => evt instanceof CompositionEvent }; const DEFAULT_EXCLUDE_KEYS = ["class", "style"]; const LISTENER_PREFIX = /^on[A-Z]/; const useAttrs = (params = {}) => { const { excludeListeners = false, excludeKeys } = params; const allExcludeKeys = computed(() => { return ((excludeKeys == null ? void 0 : excludeKeys.value) || []).concat(DEFAULT_EXCLUDE_KEYS); }); const instance = getCurrentInstance(); if (!instance) { debugWarn("use-attrs", "getCurrentInstance() returned null. useAttrs() must be called at the top of a setup function"); return computed(() => ({})); } return computed(() => { var _a; return fromPairs(Object.entries((_a = instance.proxy) == null ? void 0 : _a.$attrs).filter(([key]) => !allExcludeKeys.value.includes(key) && !(excludeListeners && LISTENER_PREFIX.test(key)))); }); }; function useCursor(input) { let selectionInfo; function recordCursor() { if (input.value == void 0) return; const { selectionStart, selectionEnd, value } = input.value; if (selectionStart == null || selectionEnd == null) return; const beforeTxt = value.slice(0, Math.max(0, selectionStart)); const afterTxt = value.slice(Math.max(0, selectionEnd)); selectionInfo = { selectionStart, selectionEnd, value, beforeTxt, afterTxt }; } function setCursor() { if (input.value == void 0 || selectionInfo == void 0) return; const { value } = input.value; const { beforeTxt, afterTxt, selectionStart } = selectionInfo; if (beforeTxt == void 0 || afterTxt == void 0 || selectionStart == void 0) return; let startPos = value.length; if (value.endsWith(afterTxt)) { startPos = value.length - afterTxt.length; } else if (value.startsWith(beforeTxt)) { startPos = beforeTxt.length; } else { const beforeLastChar = beforeTxt[selectionStart - 1]; const newIndex = value.indexOf(beforeLastChar, selectionStart - 1); if (newIndex !== -1) { startPos = newIndex + 1; } } input.value.setSelectionRange(startPos, startPos); } return [recordCursor, setCursor]; } const __default__ = defineComponent({ name: "ElInput", inheritAttrs: false }); const _sfc_main = /* @__PURE__ */ defineComponent({ ...__default__, props: inputProps, emits: inputEmits, setup(__props, { expose, emit }) { const props = __props; const rawAttrs = useAttrs$1(); const attrs = useAttrs(); const slots = useSlots(); const containerKls = computed(() => [ props.type === "textarea" ? nsTextarea.b() : nsInput.b(), nsInput.m(inputSize.value), nsInput.is("disabled", inputDisabled.value), nsInput.is("exceed", inputExceed.value), { [nsInput.b("group")]: slots.prepend || slots.append, [nsInput.m("prefix")]: slots.prefix || props.prefixIcon, [nsInput.m("suffix")]: slots.suffix || props.suffixIcon || props.clearable || props.showPassword, [nsInput.bm("suffix", "password-clear")]: showClear.value && showPwdVisible.value, [nsInput.b("hidden")]: props.type === "hidden" }, rawAttrs.class ]); const wrapperKls = computed(() => [ nsInput.e("wrapper"), nsInput.is("focus", isFocused.value) ]); const { form: elForm, formItem: elFormItem } = useFormItem(); const { inputId } = useFormItemInputId(props, { formItemContext: elFormItem }); const inputSize = useFormSize(); const inputDisabled = useFormDisabled(); const nsInput = useNamespace("input"); const nsTextarea = useNamespace("textarea"); const input = shallowRef(); const textarea = shallowRef(); const hovering = ref(false); const passwordVisible = ref(false); const countStyle = ref(); const textareaCalcStyle = shallowRef(props.inputStyle); const _ref = computed(() => input.value || textarea.value); const { wrapperRef, isFocused, handleFocus, handleBlur } = useFocusController(_ref, { beforeFocus() { return inputDisabled.value; }, afterBlur() { var _a; if (props.validateEvent) { (_a = elFormItem == null ? void 0 : elFormItem.validate) == null ? void 0 : _a.call(elFormItem, "blur").catch((err) => debugWarn(err)); } } }); const needStatusIcon = computed(() => { var _a; return (_a = elForm == null ? void 0 : elForm.statusIcon) != null ? _a : false; }); const validateState = computed(() => (elFormItem == null ? void 0 : elFormItem.validateState) || ""); const validateIcon = computed(() => validateState.value && ValidateComponentsMap[validateState.value]); const passwordIcon = computed(() => passwordVisible.value ? view_default : hide_default); const containerStyle = computed(() => [ rawAttrs.style ]); const textareaStyle = computed(() => [ props.inputStyle, textareaCalcStyle.value, { resize: props.resize } ]); const nativeInputValue = computed(() => isNil(props.modelValue) ? "" : String(props.modelValue)); const showClear = computed(() => props.clearable && !inputDisabled.value && !props.readonly && !!nativeInputValue.value && (isFocused.value || hovering.value)); const showPwdVisible = computed(() => props.showPassword && !inputDisabled.value && !!nativeInputValue.value && (!!nativeInputValue.value || isFocused.value)); const isWordLimitVisible = computed(() => props.showWordLimit && !!props.maxlength && (props.type === "text" || props.type === "textarea") && !inputDisabled.value && !props.readonly && !props.showPassword); const textLength = computed(() => nativeInputValue.value.length); const inputExceed = computed(() => !!isWordLimitVisible.value && textLength.value > Number(props.maxlength)); const suffixVisible = computed(() => !!slots.suffix || !!props.suffixIcon || showClear.value || props.showPassword || isWordLimitVisible.value || !!validateState.value && needStatusIcon.value); const [recordCursor, setCursor] = useCursor(input); useResizeObserver(textarea, (entries) => { onceInitSizeTextarea(); if (!isWordLimitVisible.value || props.resize !== "both") return; const entry = entries[0]; const { width } = entry.contentRect; countStyle.value = { right: `calc(100% - ${width + 15 + 6}px)` }; }); const resizeTextarea = () => { const { type, autosize } = props; if (!isClient || type !== "textarea" || !textarea.value) return; if (autosize) { const minRows = isObject(autosize) ? autosize.minRows : void 0; const maxRows = isObject(autosize) ? autosize.maxRows : void 0; const textareaStyle2 = calcTextareaHeight(textarea.value, minRows, maxRows); textareaCalcStyle.value = { overflowY: "hidden", ...textareaStyle2 }; nextTick(() => { textarea.value.offsetHeight; textareaCalcStyle.value = textareaStyle2; }); } else { textareaCalcStyle.value = { minHeight: calcTextareaHeight(textarea.value).minHeight }; } }; const createOnceInitResize = (resizeTextarea2) => { let isInit = false; return () => { var _a; if (isInit || !props.autosize) return; const isElHidden = ((_a = textarea.value) == null ? void 0 : _a.offsetParent) === null; if (!isElHidden) { resizeTextarea2(); isInit = true; } }; }; const onceInitSizeTextarea = createOnceInitResize(resizeTextarea); const setNativeInputValue = () => { const input2 = _ref.value; const formatterValue = props.formatter ? props.formatter(nativeInputValue.value) : nativeInputValue.value; if (!input2 || input2.value === formatterValue) return; input2.value = formatterValue; }; const handleInput = async (event) => { recordCursor(); let { value } = event.target; if (props.formatter) { value = props.parser ? props.parser(value) : value; } if (isComposing.value) return; if (value === nativeInputValue.value) { setNativeInputValue(); return; } emit(UPDATE_MODEL_EVENT, value); emit("input", value); await nextTick(); setNativeInputValue(); setCursor(); }; const handleChange = (event) => { emit("change", event.target.value); }; const { isComposing, handleCompositionStart, handleCompositionUpdate, handleCompositionEnd } = useComposition({ emit, afterComposition: handleInput }); const handlePasswordVisible = () => { recordCursor(); passwordVisible.value = !passwordVisible.value; setTimeout(setCursor); }; const focus = () => { var _a; return (_a = _ref.value) == null ? void 0 : _a.focus(); }; const blur = () => { var _a; return (_a = _ref.value) == null ? void 0 : _a.blur(); }; const handleMouseLeave = (evt) => { hovering.value = false; emit("mouseleave", evt); }; const handleMouseEnter = (evt) => { hovering.value = true; emit("mouseenter", evt); }; const handleKeydown = (evt) => { emit("keydown", evt); }; const select = () => { var _a; (_a = _ref.value) == null ? void 0 : _a.select(); }; const clear = () => { emit(UPDATE_MODEL_EVENT, ""); emit("change", ""); emit("clear"); emit("input", ""); }; watch(() => props.modelValue, () => { var _a; nextTick(() => resizeTextarea()); if (props.validateEvent) { (_a = elFormItem == null ? void 0 : elFormItem.validate) == null ? void 0 : _a.call(elFormItem, "change").catch((err) => debugWarn(err)); } }); watch(nativeInputValue, () => setNativeInputValue()); watch(() => props.type, async () => { await nextTick(); setNativeInputValue(); resizeTextarea(); }); onMounted(() => { if (!props.formatter && props.parser) { debugWarn("ElInput", "If you set the parser, you also need to set the formatter."); } setNativeInputValue(); nextTick(resizeTextarea); }); expose({ input, textarea, ref: _ref, textareaStyle, autosize: toRef(props, "autosize"), isComposing, focus, blur, select, clear, resizeTextarea }); return (_ctx, _cache) => { return openBlock(), createElementBlock("div", { class: normalizeClass([ unref(containerKls), { [unref(nsInput).bm("group", "append")]: _ctx.$slots.append, [unref(nsInput).bm("group", "prepend")]: _ctx.$slots.prepend } ]), style: normalizeStyle(unref(containerStyle)), onMouseenter: handleMouseEnter, onMouseleave: handleMouseLeave }, [ createCommentVNode(" input "), _ctx.type !== "textarea" ? (openBlock(), createElementBlock(Fragment, { key: 0 }, [ createCommentVNode(" prepend slot "), _ctx.$slots.prepend ? (openBlock(), createElementBlock("div", { key: 0, class: normalizeClass(unref(nsInput).be("group", "prepend")) }, [ renderSlot(_ctx.$slots, "prepend") ], 2)) : createCommentVNode("v-if", true), createElementVNode("div", { ref_key: "wrapperRef", ref: wrapperRef, class: normalizeClass(unref(wrapperKls)) }, [ createCommentVNode(" prefix slot "), _ctx.$slots.prefix || _ctx.prefixIcon ? (openBlock(), createElementBlock("span", { key: 0, class: normalizeClass(unref(nsInput).e("prefix")) }, [ createElementVNode("span", { class: normalizeClass(unref(nsInput).e("prefix-inner")) }, [ renderSlot(_ctx.$slots, "prefix"), _ctx.prefixIcon ? (openBlock(), createBlock(unref(ElIcon), { key: 0, class: normalizeClass(unref(nsInput).e("icon")) }, { default: withCtx(() => [ (openBlock(), createBlock(resolveDynamicComponent(_ctx.prefixIcon))) ]), _: 1 }, 8, ["class"])) : createCommentVNode("v-if", true) ], 2) ], 2)) : createCommentVNode("v-if", true), createElementVNode("input", mergeProps({ id: unref(inputId), ref_key: "input", ref: input, class: unref(nsInput).e("inner") }, unref(attrs), { minlength: _ctx.minlength, maxlength: _ctx.maxlength, type: _ctx.showPassword ? passwordVisible.value ? "text" : "password" : _ctx.type, disabled: unref(inputDisabled), readonly: _ctx.readonly, autocomplete: _ctx.autocomplete, tabindex: _ctx.tabindex, "aria-label": _ctx.ariaLabel, placeholder: _ctx.placeholder, style: _ctx.inputStyle, form: _ctx.form, autofocus: _ctx.autofocus, role: _ctx.containerRole, onCompositionstart: unref(handleCompositionStart), onCompositionupdate: unref(handleCompositionUpdate), onCompositionend: unref(handleCompositionEnd), onInput: handleInput, onChange: handleChange, onKeydown: handleKeydown }), null, 16, ["id", "minlength", "maxlength", "type", "disabled", "readonly", "autocomplete", "tabindex", "aria-label", "placeholder", "form", "autofocus", "role", "onCompositionstart", "onCompositionupdate", "onCompositionend"]), createCommentVNode(" suffix slot "), unref(suffixVisible) ? (openBlock(), createElementBlock("span", { key: 1, class: normalizeClass(unref(nsInput).e("suffix")) }, [ createElementVNode("span", { class: normalizeClass(unref(nsInput).e("suffix-inner")) }, [ !unref(showClear) || !unref(showPwdVisible) || !unref(isWordLimitVisible) ? (openBlock(), createElementBlock(Fragment, { key: 0 }, [ renderSlot(_ctx.$slots, "suffix"), _ctx.suffixIcon ? (openBlock(), createBlock(unref(ElIcon), { key: 0, class: normalizeClass(unref(nsInput).e("icon")) }, { default: withCtx(() => [ (openBlock(), createBlock(resolveDynamicComponent(_ctx.suffixIcon))) ]), _: 1 }, 8, ["class"])) : createCommentVNode("v-if", true) ], 64)) : createCommentVNode("v-if", true), unref(showClear) ? (openBlock(), createBlock(unref(ElIcon), { key: 1, class: normalizeClass([unref(nsInput).e("icon"), unref(nsInput).e("clear")]), onMousedown: withModifiers(unref(NOOP), ["prevent"]), onClick: clear }, { default: withCtx(() => [ createVNode(unref(circle_close_default)) ]), _: 1 }, 8, ["class", "onMousedown"])) : createCommentVNode("v-if", true), unref(showPwdVisible) ? (openBlock(), createBlock(unref(ElIcon), { key: 2, class: normalizeClass([unref(nsInput).e("icon"), unref(nsInput).e("password")]), onClick: handlePasswordVisible }, { default: withCtx(() => [ (openBlock(), createBlock(resolveDynamicComponent(unref(passwordIcon)))) ]), _: 1 }, 8, ["class"])) : createCommentVNode("v-if", true), unref(isWordLimitVisible) ? (openBlock(), createElementBlock("span", { key: 3, class: normalizeClass(unref(nsInput).e("count")) }, [ createElementVNode("span", { class: normalizeClass(unref(nsInput).e("count-inner")) }, toDisplayString(unref(textLength)) + " / " + toDisplayString(_ctx.maxlength), 3) ], 2)) : createCommentVNode("v-if", true), unref(validateState) && unref(validateIcon) && unref(needStatusIcon) ? (openBlock(), createBlock(unref(ElIcon), { key: 4, class: normalizeClass([ unref(nsInput).e("icon"), unref(nsInput).e("validateIcon"), unref(nsInput).is("loading", unref(validateState) === "validating") ]) }, { default: withCtx(() => [ (openBlock(), createBlock(resolveDynamicComponent(unref(validateIcon)))) ]), _: 1 }, 8, ["class"])) : createCommentVNode("v-if", true) ], 2) ], 2)) : createCommentVNode("v-if", true) ], 2), createCommentVNode(" append slot "), _ctx.$slots.append ? (openBlock(), createElementBlock("div", { key: 1, class: normalizeClass(unref(nsInput).be("group", "append")) }, [ renderSlot(_ctx.$slots, "append") ], 2)) : createCommentVNode("v-if", true) ], 64)) : (openBlock(), createElementBlock(Fragment, { key: 1 }, [ createCommentVNode(" textarea "), createElementVNode("textarea", mergeProps({ id: unref(inputId), ref_key: "textarea", ref: textarea, class: [unref(nsTextarea).e("inner"), unref(nsInput).is("focus", unref(isFocused))] }, unref(attrs), { minlength: _ctx.minlength, maxlength: _ctx.maxlength, tabindex: _ctx.tabindex, disabled: unref(inputDisabled), readonly: _ctx.readonly, autocomplete: _ctx.autocomplete, style: unref(textareaStyle), "aria-label": _ctx.ariaLabel, placeholder: _ctx.placeholder, form: _ctx.form, autofocus: _ctx.autofocus, rows: _ctx.rows, role: _ctx.containerRole, onCompositionstart: unref(handleCompositionStart), onCompositionupdate: unref(handleCompositionUpdate), onCompositionend: unref(handleCompositionEnd), onInput: handleInput, onFocus: unref(handleFocus), onBlur: unref(handleBlur), onChange: handleChange, onKeydown: handleKeydown }), null, 16, ["id", "minlength", "maxlength", "tabindex", "disabled", "readonly", "autocomplete", "aria-label", "placeholder", "form", "autofocus", "rows", "role", "onCompositionstart", "onCompositionupdate", "onCompositionend", "onFocus", "onBlur"]), unref(isWordLimitVisible) ? (openBlock(), createElementBlock("span", { key: 0, style: normalizeStyle(countStyle.value), class: normalizeClass(unref(nsInput).e("count")) }, toDisplayString(unref(textLength)) + " / " + toDisplayString(_ctx.maxlength), 7)) : createCommentVNode("v-if", true) ], 64)) ], 38); }; } }); var Input = /* @__PURE__ */ _export_sfc(_sfc_main, [["__file", "input.vue"]]); const ElInput = withInstall(Input); export { ElInput, ElInput as default, inputEmits, inputProps }; //# sourceMappingURL=index-C8p2LP3A.js.map