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&#160;<span id="projectnumber">6.1.4</span>
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<a href="dropdown_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">// Copyright 2021 Arthur Sonzogni. All rights reserved.</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// Use of this source code is governed by the MIT license that can be found in</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">// the LICENSE file.</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include &lt;<a class="code" href="event_8hpp.html">ftxui/component/event.hpp</a>&gt;</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="preprocessor">#include &lt;functional&gt;</span> <span class="comment">// for function</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#include &lt;string&gt;</span> <span class="comment">// for string</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span> </div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include &lt;utility&gt;</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include &quot;<a class="code" href="component_8hpp.html">ftxui/component/component.hpp</a>&quot;</span> <span class="comment">// for Maybe, Checkbox, Make, Radiobox, Vertical, Dropdown</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#include &quot;<a class="code" href="component__base_8hpp.html">ftxui/component/component_base.hpp</a>&quot;</span> <span class="comment">// for Component, ComponentBase</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include &quot;<a class="code" href="component__options_8hpp.html">ftxui/component/component_options.hpp</a>&quot;</span> <span class="comment">// for CheckboxOption, EntryState</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include &quot;<a class="code" href="elements_8hpp.html">ftxui/dom/elements.hpp</a>&quot;</span> <span class="comment">// for operator|, Element, border, filler, operator|=, separator, size, text, vbox, frame, vscroll_indicator, hbox, HEIGHT, LESS_THAN, bold, inverted</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include &quot;<a class="code" href="util_8hpp.html">ftxui/screen/util.hpp</a>&quot;</span> <span class="comment">// for clamp</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include &quot;<a class="code" href="ref_8hpp.html">ftxui/util/ref.hpp</a>&quot;</span> <span class="comment">// for ConstStringListRef</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> </div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceftxui.html">ftxui</a> {</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"></span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment">/// @brief A dropdown menu.</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="comment">/// @ingroup component</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="comment">/// @param entries The list of entries to display.</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="comment">/// @param selected The index of the selected entry.</span></div>
<div class="foldopen" id="foldopen00022" data-start="{" data-end="}">
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"><a class="line" href="namespaceftxui.html#aa22bddff4aeed66e20f30d0715596999"> 22</a></span><span class="comment"></span><a class="code hl_typedef" href="namespaceftxui.html#af1479ede01dbf087342534ab4ada11d3">Component</a> <a class="code hl_function" href="namespaceftxui.html#aa22bddff4aeed66e20f30d0715596999">Dropdown</a>(<a class="code hl_class" href="classftxui_1_1ConstStringListRef.html">ConstStringListRef</a> entries, <span class="keywordtype">int</span>* selected) {</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> <a class="code hl_struct" href="namespaceftxui.html#structftxui_1_1DropdownOption">DropdownOption</a> option;</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> option.<a class="code hl_variable" href="namespaceftxui.html#a83288bb2ebb6ca0eef0651285a71291e">radiobox</a>.<a class="code hl_variable" href="structftxui_1_1RadioboxOption.html#a7b534b117dbbe826d34ba17af85f1e93">entries</a> = std::move(entries);</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> option.<a class="code hl_variable" href="namespaceftxui.html#a83288bb2ebb6ca0eef0651285a71291e">radiobox</a>.<a class="code hl_variable" href="structftxui_1_1RadioboxOption.html#ac42a32c3439d08be9c5626a5fbc3a0c4">selected</a> = selected;</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceftxui.html#aa22bddff4aeed66e20f30d0715596999">Dropdown</a>(option);</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span>}</div>
</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="comment"></span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="comment">/// @brief A dropdown menu.</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="comment">/// @ingroup component</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="comment">/// @param option The options for the dropdown.</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="comment"></span><span class="comment">// NOLINTNEXTLINE</span></div>
<div class="foldopen" id="foldopen00033" data-start="{" data-end="}">
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"><a class="line" href="namespaceftxui.html#aa4b353566017558bac648ee1409930de"> 33</a></span><a class="code hl_typedef" href="namespaceftxui.html#af1479ede01dbf087342534ab4ada11d3">Component</a> <a class="code hl_function" href="namespaceftxui.html#aa22bddff4aeed66e20f30d0715596999">Dropdown</a>(<a class="code hl_struct" href="namespaceftxui.html#structftxui_1_1DropdownOption">DropdownOption</a> option) {</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">class </span>Impl : <span class="keyword">public</span> <a class="code hl_class" href="classftxui_1_1ComponentBase.html">ComponentBase</a>, <span class="keyword">public</span> <a class="code hl_struct" href="namespaceftxui.html#structftxui_1_1DropdownOption">DropdownOption</a> {</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">public</span>:</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">explicit</span> Impl(<a class="code hl_struct" href="namespaceftxui.html#structftxui_1_1DropdownOption">DropdownOption</a> option) : <a class="code hl_struct" href="namespaceftxui.html#structftxui_1_1DropdownOption">DropdownOption</a>(std::move(option)) {</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> FillDefault();</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> checkbox_ = <a class="code hl_function" href="namespaceftxui.html#ae0d441d2c83740f187f62db566bbefcd">Checkbox</a>(checkbox);</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> radiobox_ = <a class="code hl_function" href="namespaceftxui.html#a3e7a44f321fa910f07aef5879e67af95">Radiobox</a>(radiobox);</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> </div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> Add(Container::Vertical({</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> checkbox_,</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> <a class="code hl_function" href="namespaceftxui.html#a20b66a70c1cd4ff3f0ff571a4507d2b4">Maybe</a>(radiobox_, checkbox.checked),</div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> }));</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> }</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <a class="code hl_typedef" href="namespaceftxui.html#a2bc31f2d685189e5c61d2293a1f51b4f">Element</a> OnRender()<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> selected_ =</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> util::clamp(radiobox.selected(), 0, <span class="keywordtype">int</span>(radiobox.entries.size()) - 1);</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> selected_ = util::clamp(selected_(), 0, <span class="keywordtype">int</span>(radiobox.entries.size()) - 1);</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> </div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keywordflow">if</span> (selected_() &gt;= 0 &amp;&amp; selected_() &lt; <span class="keywordtype">int</span>(radiobox.entries.size())) {</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> title_ = radiobox.entries[selected_()];</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> }</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="keywordflow">return</span> transform(*open_, checkbox_-&gt;Render(), radiobox_-&gt;Render());</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> }</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="comment">// Switch focus in between the checkbox and the radiobox when selecting it.</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="keywordtype">bool</span> OnEvent(<a class="code hl_struct" href="structftxui_1_1Event.html">ftxui::Event</a> event)<span class="keyword"> override </span>{</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> open_old = open_();</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">const</span> <span class="keywordtype">int</span> selected_old = selected_();</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keywordtype">bool</span> handled = ComponentBase::OnEvent(event);</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> </div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="comment">// Transfer focus to the radiobox when the dropdown is opened.</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keywordflow">if</span> (!open_old &amp;&amp; open_()) {</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> radiobox_-&gt;TakeFocus();</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> }</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> </div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// Auto-close the dropdown when the user selects an item, even if the item</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="comment">// it the same as the previous one.</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keywordflow">if</span> (open_old &amp;&amp; open_()) {</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> should_close =</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> (selected_() != selected_old) || <span class="comment">//</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> (event == Event::Return) || <span class="comment">//</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> (<span class="keyword">event</span> == Event::Character(<span class="charliteral">&#39; &#39;</span>)) || <span class="comment">//</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> (event == Event::Escape) || <span class="comment">//</span></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> (<span class="keyword">event</span>.is_mouse() &amp;&amp; event.<a class="code hl_function" href="structftxui_1_1Event.html#a37daf59df57eb6415eb34c8df11a4892">mouse</a>().<a class="code hl_variable" href="structftxui_1_1Mouse.html#aa56e877ca6a7524cf1e891c7435c3ace">button</a> == Mouse::Left &amp;&amp;</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> event.<a class="code hl_function" href="structftxui_1_1Event.html#a37daf59df57eb6415eb34c8df11a4892">mouse</a>().<a class="code hl_variable" href="structftxui_1_1Mouse.html#af8ec4d0833a67c0bcd400f9e30bd07c7">motion</a> == Mouse::Pressed);</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keywordflow">if</span> (should_close) {</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> checkbox_-&gt;TakeFocus();</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> open_ = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> handled = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> }</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> }</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> </div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> <span class="keywordflow">return</span> handled;</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> }</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordtype">void</span> FillDefault() {</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> open_ = checkbox.checked;</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> selected_ = radiobox.selected;</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> checkbox.checked = &amp;*open_;</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> radiobox.selected = &amp;*selected_;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> checkbox.label = &amp;title_;</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> </div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keywordflow">if</span> (!checkbox.transform) {</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> checkbox.transform = [](<span class="keyword">const</span> <a class="code hl_struct" href="namespaceftxui.html#structftxui_1_1EntryState">EntryState</a>&amp; s) {</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">auto</span> prefix = <a class="code hl_function" href="namespaceftxui.html#a75baaa2734ed76a9f478beaafa87ae57">text</a>(s.state ? <span class="stringliteral">&quot;↓ &quot;</span> : <span class="stringliteral">&quot;→ &quot;</span>); <span class="comment">// NOLINT</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keyword">auto</span> t = <a class="code hl_function" href="namespaceftxui.html#a75baaa2734ed76a9f478beaafa87ae57">text</a>(s.label);</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keywordflow">if</span> (s.active) {</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> t |= <a class="code hl_function" href="namespaceftxui.html#a353c769068e25303eb41fa2da565c604">bold</a>;</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> }</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="keywordflow">if</span> (s.focused) {</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> t |= <a class="code hl_function" href="namespaceftxui.html#a672456b8f2091b615a30ff755418b37b">inverted</a>;</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> }</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceftxui.html#a552ba6d33b3c9bec586b99fba4c243ac">hbox</a>({prefix, t});</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> };</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> }</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> </div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="keywordflow">if</span> (!transform) {</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> transform = [](<span class="keywordtype">bool</span> is_open, <a class="code hl_typedef" href="namespaceftxui.html#a2bc31f2d685189e5c61d2293a1f51b4f">Element</a> checkbox_element,</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <a class="code hl_typedef" href="namespaceftxui.html#a2bc31f2d685189e5c61d2293a1f51b4f">Element</a> radiobox_element) {</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="keywordflow">if</span> (is_open) {</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="keyword">const</span> <span class="keywordtype">int</span> max_height = 12;</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceftxui.html#afd28058f0ccbbdf34691a85a7cc9b2e3">vbox</a>({</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> std::move(checkbox_element),</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <a class="code hl_function" href="namespaceftxui.html#ac1ef1cf6bf7cd0759ffa195071edb2a0">separator</a>(),</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> std::move(radiobox_element) | <a class="code hl_function" href="namespaceftxui.html#a1974176e676afdb96d203e8e0f579219">vscroll_indicator</a> | <a class="code hl_function" href="namespaceftxui.html#ad0d6a96f6e1fb6d67d9fa6323062a737">frame</a> |</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <a class="code hl_function" href="namespaceftxui.html#a201220986fbdc539e42efe067985cbdb">size</a>(<a class="code hl_enumvalue" href="namespaceftxui.html#a04711c04f28aabfa0e5928a35baaec53a38b9241136017b93ea2755a49cf0a000">HEIGHT</a>, <a class="code hl_enumvalue" href="namespaceftxui.html#ae09f44b989d381a387329fd0a0935926a41b05932cd237b2b133fff1ade85bed5">LESS_THAN</a>, max_height),</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> }) |</div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <a class="code hl_function" href="namespaceftxui.html#ae8537acd423d47cf07e61bd774fb1098">border</a>;</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> }</div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceftxui.html#afd28058f0ccbbdf34691a85a7cc9b2e3">vbox</a>({std::move(checkbox_element), <a class="code hl_function" href="namespaceftxui.html#ac2a9ed2d22ec3c8811b61f4a901ed367">filler</a>()}) | <a class="code hl_function" href="namespaceftxui.html#ae8537acd423d47cf07e61bd774fb1098">border</a>;</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> };</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> }</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> }</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> </div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <span class="keyword">private</span>:</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <a class="code hl_class" href="classftxui_1_1Ref.html">Ref&lt;bool&gt;</a> open_;</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <a class="code hl_class" href="classftxui_1_1Ref.html">Ref&lt;int&gt;</a> selected_;</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <a class="code hl_typedef" href="namespaceftxui.html#af1479ede01dbf087342534ab4ada11d3">Component</a> checkbox_;</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> <a class="code hl_typedef" href="namespaceftxui.html#af1479ede01dbf087342534ab4ada11d3">Component</a> radiobox_;</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> std::string title_;</div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> };</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> </div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceftxui.html#a2b8973dc71334f1d98e2e6f55de8b5ae">Make&lt;Impl&gt;</a>(option);</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span>}</div>
</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> </div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span>} <span class="comment">// namespace ftxui</span></div>
<div class="ttc" id="aclassftxui_1_1ComponentBase_html"><div class="ttname"><a href="classftxui_1_1ComponentBase.html">ftxui::ComponentBase</a></div><div class="ttdoc">It implement rendering itself as ftxui::Element. It implement keyboard navigation by responding to ft...</div><div class="ttdef"><b>Definition</b> <a href="component__base_8hpp_source.html#l00030">component_base.hpp:30</a></div></div>
<div class="ttc" id="aclassftxui_1_1ConstStringListRef_html"><div class="ttname"><a href="classftxui_1_1ConstStringListRef.html">ftxui::ConstStringListRef</a></div><div class="ttdoc">An adapter. Reference a list of strings.</div><div class="ttdef"><b>Definition</b> <a href="ref_8hpp_source.html#l00116">ref.hpp:116</a></div></div>
<div class="ttc" id="aclassftxui_1_1Ref_html"><div class="ttname"><a href="classftxui_1_1Ref.html">ftxui::Ref</a></div><div class="ttdoc">An adapter. Own or reference an mutable object.</div><div class="ttdef"><b>Definition</b> <a href="ref_8hpp_source.html#l00046">ref.hpp:46</a></div></div>
<div class="ttc" id="acomponent_8hpp_html"><div class="ttname"><a href="component_8hpp.html">component.hpp</a></div></div>
<div class="ttc" id="acomponent__base_8hpp_html"><div class="ttname"><a href="component__base_8hpp.html">component_base.hpp</a></div></div>
<div class="ttc" id="acomponent__options_8hpp_html"><div class="ttname"><a href="component__options_8hpp.html">component_options.hpp</a></div></div>
<div class="ttc" id="aelements_8hpp_html"><div class="ttname"><a href="elements_8hpp.html">elements.hpp</a></div></div>
<div class="ttc" id="aevent_8hpp_html"><div class="ttname"><a href="event_8hpp.html">event.hpp</a></div></div>
<div class="ttc" id="anamespaceftxui_html"><div class="ttname"><a href="namespaceftxui.html">ftxui</a></div><div class="ttdef"><b>Definition</b> <a href="animation_8hpp_source.html#l00010">animation.hpp:10</a></div></div>
<div class="ttc" id="anamespaceftxui_html_a04711c04f28aabfa0e5928a35baaec53a38b9241136017b93ea2755a49cf0a000"><div class="ttname"><a href="namespaceftxui.html#a04711c04f28aabfa0e5928a35baaec53a38b9241136017b93ea2755a49cf0a000">ftxui::HEIGHT</a></div><div class="ttdeci">@ HEIGHT</div><div class="ttdef"><b>Definition</b> <a href="elements_8hpp_source.html#l00153">elements.hpp:153</a></div></div>
<div class="ttc" id="anamespaceftxui_html_a1974176e676afdb96d203e8e0f579219"><div class="ttname"><a href="namespaceftxui.html#a1974176e676afdb96d203e8e0f579219">ftxui::vscroll_indicator</a></div><div class="ttdeci">Element vscroll_indicator(Element)</div><div class="ttdoc">Display a vertical scrollbar to the right. colors.</div><div class="ttdef"><b>Definition</b> <a href="scroll__indicator_8cpp_source.html#l00021">scroll_indicator.cpp:21</a></div></div>
<div class="ttc" id="anamespaceftxui_html_a201220986fbdc539e42efe067985cbdb"><div class="ttname"><a href="namespaceftxui.html#a201220986fbdc539e42efe067985cbdb">ftxui::size</a></div><div class="ttdeci">Decorator size(WidthOrHeight, Constraint, int value)</div><div class="ttdoc">Apply a constraint on the size of an element.</div><div class="ttdef"><b>Definition</b> <a href="size_8cpp_source.html#l00089">size.cpp:89</a></div></div>
<div class="ttc" id="anamespaceftxui_html_a20b66a70c1cd4ff3f0ff571a4507d2b4"><div class="ttname"><a href="namespaceftxui.html#a20b66a70c1cd4ff3f0ff571a4507d2b4">ftxui::Maybe</a></div><div class="ttdeci">Component Maybe(Component, const bool *show)</div><div class="ttdoc">Decorate a component |child|. It is shown only when |show| is true.</div><div class="ttdef"><b>Definition</b> <a href="maybe_8cpp_source.html#l00074">maybe.cpp:74</a></div></div>
<div class="ttc" id="anamespaceftxui_html_a2b8973dc71334f1d98e2e6f55de8b5ae"><div class="ttname"><a href="namespaceftxui.html#a2b8973dc71334f1d98e2e6f55de8b5ae">ftxui::Make</a></div><div class="ttdeci">std::shared_ptr&lt; T &gt; Make(Args &amp;&amp;... args)</div><div class="ttdef"><b>Definition</b> <a href="component_8hpp_source.html#l00026">component.hpp:26</a></div></div>
<div class="ttc" id="anamespaceftxui_html_a2bc31f2d685189e5c61d2293a1f51b4f"><div class="ttname"><a href="namespaceftxui.html#a2bc31f2d685189e5c61d2293a1f51b4f">ftxui::Element</a></div><div class="ttdeci">std::shared_ptr&lt; Node &gt; Element</div><div class="ttdef"><b>Definition</b> <a href="elements_8hpp_source.html#l00022">elements.hpp:22</a></div></div>
<div class="ttc" id="anamespaceftxui_html_a353c769068e25303eb41fa2da565c604"><div class="ttname"><a href="namespaceftxui.html#a353c769068e25303eb41fa2da565c604">ftxui::bold</a></div><div class="ttdeci">Element bold(Element)</div><div class="ttdoc">Use a bold font, for elements with more emphasis.</div><div class="ttdef"><b>Definition</b> <a href="bold_8cpp_source.html#l00033">bold.cpp:33</a></div></div>
<div class="ttc" id="anamespaceftxui_html_a3e7a44f321fa910f07aef5879e67af95"><div class="ttname"><a href="namespaceftxui.html#a3e7a44f321fa910f07aef5879e67af95">ftxui::Radiobox</a></div><div class="ttdeci">Component Radiobox(RadioboxOption options)</div><div class="ttdoc">A list of element, where only one can be selected.</div><div class="ttdef"><b>Definition</b> <a href="radiobox_8cpp_source.html#l00204">radiobox.cpp:204</a></div></div>
<div class="ttc" id="anamespaceftxui_html_a552ba6d33b3c9bec586b99fba4c243ac"><div class="ttname"><a href="namespaceftxui.html#a552ba6d33b3c9bec586b99fba4c243ac">ftxui::hbox</a></div><div class="ttdeci">Element hbox(Elements)</div><div class="ttdoc">A container displaying elements horizontally one by one.</div><div class="ttdef"><b>Definition</b> <a href="hbox_8cpp_source.html#l00094">hbox.cpp:94</a></div></div>
<div class="ttc" id="anamespaceftxui_html_a672456b8f2091b615a30ff755418b37b"><div class="ttname"><a href="namespaceftxui.html#a672456b8f2091b615a30ff755418b37b">ftxui::inverted</a></div><div class="ttdeci">Element inverted(Element)</div><div class="ttdoc">Add a filter that will invert the foreground and the background colors.</div><div class="ttdef"><b>Definition</b> <a href="inverted_8cpp_source.html#l00034">inverted.cpp:34</a></div></div>
<div class="ttc" id="anamespaceftxui_html_a75baaa2734ed76a9f478beaafa87ae57"><div class="ttname"><a href="namespaceftxui.html#a75baaa2734ed76a9f478beaafa87ae57">ftxui::text</a></div><div class="ttdeci">Element text(std::wstring text)</div><div class="ttdoc">Display a piece of unicode text.</div><div class="ttdef"><b>Definition</b> <a href="text_8cpp_source.html#l00160">text.cpp:160</a></div></div>
<div class="ttc" id="anamespaceftxui_html_a83288bb2ebb6ca0eef0651285a71291e"><div class="ttname"><a href="namespaceftxui.html#a83288bb2ebb6ca0eef0651285a71291e">ftxui::DropdownOption::radiobox</a></div><div class="ttdeci">RadioboxOption radiobox</div><div class="ttdef"><b>Definition</b> <a href="component__options_8hpp_source.html#l00276">component_options.hpp:276</a></div></div>
<div class="ttc" id="anamespaceftxui_html_aa22bddff4aeed66e20f30d0715596999"><div class="ttname"><a href="namespaceftxui.html#aa22bddff4aeed66e20f30d0715596999">ftxui::Dropdown</a></div><div class="ttdeci">Component Dropdown(ConstStringListRef entries, int *selected)</div><div class="ttdoc">A dropdown menu.</div><div class="ttdef"><b>Definition</b> <a href="#l00022">dropdown.cpp:22</a></div></div>
<div class="ttc" id="anamespaceftxui_html_ac1ef1cf6bf7cd0759ffa195071edb2a0"><div class="ttname"><a href="namespaceftxui.html#ac1ef1cf6bf7cd0759ffa195071edb2a0">ftxui::separator</a></div><div class="ttdeci">Element separator()</div><div class="ttdoc">Draw a vertical or horizontal separation in between two other elements.</div><div class="ttdef"><b>Definition</b> <a href="separator_8cpp_source.html#l00134">separator.cpp:134</a></div></div>
<div class="ttc" id="anamespaceftxui_html_ac2a9ed2d22ec3c8811b61f4a901ed367"><div class="ttname"><a href="namespaceftxui.html#ac2a9ed2d22ec3c8811b61f4a901ed367">ftxui::filler</a></div><div class="ttdeci">Element filler()</div><div class="ttdoc">An element that will take expand proportionally to the space left in a container.</div><div class="ttdef"><b>Definition</b> <a href="flex_8cpp_source.html#l00098">flex.cpp:98</a></div></div>
<div class="ttc" id="anamespaceftxui_html_ad0d6a96f6e1fb6d67d9fa6323062a737"><div class="ttname"><a href="namespaceftxui.html#ad0d6a96f6e1fb6d67d9fa6323062a737">ftxui::frame</a></div><div class="ttdeci">Element frame(Element)</div><div class="ttdoc">Allow an element to be displayed inside a 'virtual' area. It size can be larger than its container....</div><div class="ttdef"><b>Definition</b> <a href="frame_8cpp_source.html#l00118">frame.cpp:118</a></div></div>
<div class="ttc" id="anamespaceftxui_html_ae09f44b989d381a387329fd0a0935926a41b05932cd237b2b133fff1ade85bed5"><div class="ttname"><a href="namespaceftxui.html#ae09f44b989d381a387329fd0a0935926a41b05932cd237b2b133fff1ade85bed5">ftxui::LESS_THAN</a></div><div class="ttdeci">@ LESS_THAN</div><div class="ttdef"><b>Definition</b> <a href="elements_8hpp_source.html#l00154">elements.hpp:154</a></div></div>
<div class="ttc" id="anamespaceftxui_html_ae0d441d2c83740f187f62db566bbefcd"><div class="ttname"><a href="namespaceftxui.html#ae0d441d2c83740f187f62db566bbefcd">ftxui::Checkbox</a></div><div class="ttdeci">Component Checkbox(CheckboxOption options)</div><div class="ttdoc">Draw checkable element.</div><div class="ttdef"><b>Definition</b> <a href="checkbox_8cpp_source.html#l00108">checkbox.cpp:108</a></div></div>
<div class="ttc" id="anamespaceftxui_html_ae8537acd423d47cf07e61bd774fb1098"><div class="ttname"><a href="namespaceftxui.html#ae8537acd423d47cf07e61bd774fb1098">ftxui::border</a></div><div class="ttdeci">Element border(Element)</div><div class="ttdoc">Draw a border around the element.</div><div class="ttdef"><b>Definition</b> <a href="border_8cpp_source.html#l00227">border.cpp:227</a></div></div>
<div class="ttc" id="anamespaceftxui_html_af1479ede01dbf087342534ab4ada11d3"><div class="ttname"><a href="namespaceftxui.html#af1479ede01dbf087342534ab4ada11d3">ftxui::Component</a></div><div class="ttdeci">std::shared_ptr&lt; ComponentBase &gt; Component</div><div class="ttdef"><b>Definition</b> <a href="component__base_8hpp_source.html#l00024">component_base.hpp:24</a></div></div>
<div class="ttc" id="anamespaceftxui_html_afd28058f0ccbbdf34691a85a7cc9b2e3"><div class="ttname"><a href="namespaceftxui.html#afd28058f0ccbbdf34691a85a7cc9b2e3">ftxui::vbox</a></div><div class="ttdeci">Element vbox(Elements)</div><div class="ttdoc">A container displaying elements vertically one by one.</div><div class="ttdef"><b>Definition</b> <a href="vbox_8cpp_source.html#l00096">vbox.cpp:96</a></div></div>
<div class="ttc" id="anamespaceftxui_html_structftxui_1_1DropdownOption"><div class="ttname"><a href="namespaceftxui.html#structftxui_1_1DropdownOption">ftxui::DropdownOption</a></div><div class="ttdoc">Option for the Dropdown component.A dropdown menu is a checkbox opening/closing a radiobox.</div><div class="ttdef"><b>Definition</b> <a href="component__options_8hpp_source.html#l00270">component_options.hpp:270</a></div></div>
<div class="ttc" id="anamespaceftxui_html_structftxui_1_1EntryState"><div class="ttname"><a href="namespaceftxui.html#structftxui_1_1EntryState">ftxui::EntryState</a></div><div class="ttdoc">arguments for |ButtonOption::transform|, |CheckboxOption::transform|, |Radiobox::transform|,...</div><div class="ttdef"><b>Definition</b> <a href="component__options_8hpp_source.html#l00023">component_options.hpp:23</a></div></div>
<div class="ttc" id="aref_8hpp_html"><div class="ttname"><a href="ref_8hpp.html">ref.hpp</a></div></div>
<div class="ttc" id="astructftxui_1_1Event_html"><div class="ttname"><a href="structftxui_1_1Event.html">ftxui::Event</a></div><div class="ttdoc">Represent an event. It can be key press event, a terminal resize, or more ...</div><div class="ttdef"><b>Definition</b> <a href="event_8hpp_source.html#l00027">event.hpp:27</a></div></div>
<div class="ttc" id="astructftxui_1_1Event_html_a37daf59df57eb6415eb34c8df11a4892"><div class="ttname"><a href="structftxui_1_1Event.html#a37daf59df57eb6415eb34c8df11a4892">ftxui::Event::mouse</a></div><div class="ttdeci">struct Mouse &amp; mouse()</div><div class="ttdef"><b>Definition</b> <a href="event_8hpp_source.html#l00108">event.hpp:108</a></div></div>
<div class="ttc" id="astructftxui_1_1Mouse_html_aa56e877ca6a7524cf1e891c7435c3ace"><div class="ttname"><a href="structftxui_1_1Mouse.html#aa56e877ca6a7524cf1e891c7435c3ace">ftxui::Mouse::button</a></div><div class="ttdeci">Button button</div><div class="ttdef"><b>Definition</b> <a href="mouse_8hpp_source.html#l00030">mouse.hpp:30</a></div></div>
<div class="ttc" id="astructftxui_1_1Mouse_html_af8ec4d0833a67c0bcd400f9e30bd07c7"><div class="ttname"><a href="structftxui_1_1Mouse.html#af8ec4d0833a67c0bcd400f9e30bd07c7">ftxui::Mouse::motion</a></div><div class="ttdeci">Motion motion</div><div class="ttdef"><b>Definition</b> <a href="mouse_8hpp_source.html#l00033">mouse.hpp:33</a></div></div>
<div class="ttc" id="astructftxui_1_1RadioboxOption_html_a7b534b117dbbe826d34ba17af85f1e93"><div class="ttname"><a href="structftxui_1_1RadioboxOption.html#a7b534b117dbbe826d34ba17af85f1e93">ftxui::RadioboxOption::entries</a></div><div class="ttdeci">ConstStringListRef entries</div><div class="ttdef"><b>Definition</b> <a href="component__options_8hpp_source.html#l00198">component_options.hpp:198</a></div></div>
<div class="ttc" id="astructftxui_1_1RadioboxOption_html_ac42a32c3439d08be9c5626a5fbc3a0c4"><div class="ttname"><a href="structftxui_1_1RadioboxOption.html#ac42a32c3439d08be9c5626a5fbc3a0c4">ftxui::RadioboxOption::selected</a></div><div class="ttdeci">Ref&lt; int &gt; selected</div><div class="ttdef"><b>Definition</b> <a href="component__options_8hpp_source.html#l00199">component_options.hpp:199</a></div></div>
<div class="ttc" id="autil_8hpp_html"><div class="ttname"><a href="util_8hpp.html">util.hpp</a></div></div>
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