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qwen/nodejs/node_modules/prompts/dist/elements/autocompleteMultiselect.js

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+'use strict';
+
+const color = require('kleur');
+
+const _require = require('sisteransi'),
+      cursor = _require.cursor;
+
+const MultiselectPrompt = require('./multiselect');
+
+const _require2 = require('../util'),
+      clear = _require2.clear,
+      style = _require2.style,
+      figures = _require2.figures;
+/**
+ * MultiselectPrompt Base Element
+ * @param {Object} opts Options
+ * @param {String} opts.message Message
+ * @param {Array} opts.choices Array of choice objects
+ * @param {String} [opts.hint] Hint to display
+ * @param {String} [opts.warn] Hint shown for disabled choices
+ * @param {Number} [opts.max] Max choices
+ * @param {Number} [opts.cursor=0] Cursor start position
+ * @param {Stream} [opts.stdin] The Readable stream to listen to
+ * @param {Stream} [opts.stdout] The Writable stream to write readline data to
+ */
+
+
+class AutocompleteMultiselectPrompt extends MultiselectPrompt {
+  constructor(opts = {}) {
+    opts.overrideRender = true;
+    super(opts);
+    this.inputValue = '';
+    this.clear = clear('', this.out.columns);
+    this.filteredOptions = this.value;
+    this.render();
+  }
+
+  last() {
+    this.cursor = this.filteredOptions.length - 1;
+    this.render();
+  }
+
+  next() {
+    this.cursor = (this.cursor + 1) % this.filteredOptions.length;
+    this.render();
+  }
+
+  up() {
+    if (this.cursor === 0) {
+      this.cursor = this.filteredOptions.length - 1;
+    } else {
+      this.cursor--;
+    }
+
+    this.render();
+  }
+
+  down() {
+    if (this.cursor === this.filteredOptions.length - 1) {
+      this.cursor = 0;
+    } else {
+      this.cursor++;
+    }
+
+    this.render();
+  }
+
+  left() {
+    this.filteredOptions[this.cursor].selected = false;
+    this.render();
+  }
+
+  right() {
+    if (this.value.filter(e => e.selected).length >= this.maxChoices) return this.bell();
+    this.filteredOptions[this.cursor].selected = true;
+    this.render();
+  }
+
+  delete() {
+    if (this.inputValue.length) {
+      this.inputValue = this.inputValue.substr(0, this.inputValue.length - 1);
+      this.updateFilteredOptions();
+    }
+  }
+
+  updateFilteredOptions() {
+    const currentHighlight = this.filteredOptions[this.cursor];
+    this.filteredOptions = this.value.filter(v => {
+      if (this.inputValue) {
+        if (typeof v.title === 'string') {
+          if (v.title.toLowerCase().includes(this.inputValue.toLowerCase())) {
+            return true;
+          }
+        }
+
+        if (typeof v.value === 'string') {
+          if (v.value.toLowerCase().includes(this.inputValue.toLowerCase())) {
+            return true;
+          }
+        }
+
+        return false;
+      }
+
+      return true;
+    });
+    const newHighlightIndex = this.filteredOptions.findIndex(v => v === currentHighlight);
+    this.cursor = newHighlightIndex < 0 ? 0 : newHighlightIndex;
+    this.render();
+  }
+
+  handleSpaceToggle() {
+    const v = this.filteredOptions[this.cursor];
+
+    if (v.selected) {
+      v.selected = false;
+      this.render();
+    } else if (v.disabled || this.value.filter(e => e.selected).length >= this.maxChoices) {
+      return this.bell();
+    } else {
+      v.selected = true;
+      this.render();
+    }
+  }
+
+  handleInputChange(c) {
+    this.inputValue = this.inputValue + c;
+    this.updateFilteredOptions();
+  }
+
+  _(c, key) {
+    if (c === ' ') {
+      this.handleSpaceToggle();
+    } else {
+      this.handleInputChange(c);
+    }
+  }
+
+  renderInstructions() {
+    if (this.instructions === undefined || this.instructions) {
+      if (typeof this.instructions === 'string') {
+        return this.instructions;
+      }
+
+      return `
+Instructions:
+    ${figures.arrowUp}/${figures.arrowDown}: Highlight option
+    ${figures.arrowLeft}/${figures.arrowRight}/[space]: Toggle selection
+    [a,b,c]/delete: Filter choices
+    enter/return: Complete answer
+`;
+    }
+
+    return '';
+  }
+
+  renderCurrentInput() {
+    return `
+Filtered results for: ${this.inputValue ? this.inputValue : color.gray('Enter something to filter')}\n`;
+  }
+
+  renderOption(cursor, v, i) {
+    let title;
+    if (v.disabled) title = cursor === i ? color.gray().underline(v.title) : color.strikethrough().gray(v.title);else title = cursor === i ? color.cyan().underline(v.title) : v.title;
+    return (v.selected ? color.green(figures.radioOn) : figures.radioOff) + '  ' + title;
+  }
+
+  renderDoneOrInstructions() {
+    if (this.done) {
+      return this.value.filter(e => e.selected).map(v => v.title).join(', ');
+    }
+
+    const output = [color.gray(this.hint), this.renderInstructions(), this.renderCurrentInput()];
+
+    if (this.filteredOptions.length && this.filteredOptions[this.cursor].disabled) {
+      output.push(color.yellow(this.warn));
+    }
+
+    return output.join(' ');
+  }
+
+  render() {
+    if (this.closed) return;
+    if (this.firstRender) this.out.write(cursor.hide);
+    super.render(); // print prompt
+
+    let prompt = [style.symbol(this.done, this.aborted), color.bold(this.msg), style.delimiter(false), this.renderDoneOrInstructions()].join(' ');
+
+    if (this.showMinError) {
+      prompt += color.red(`You must select a minimum of ${this.minSelected} choices.`);
+      this.showMinError = false;
+    }
+
+    prompt += this.renderOptions(this.filteredOptions);
+    this.out.write(this.clear + prompt);
+    this.clear = clear(prompt, this.out.columns);
+  }
+
+}
+
+module.exports = AutocompleteMultiselectPrompt;