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arduinolibs/ListField_8cpp_source.html
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2013-09-29 09:34:55 +10:00

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<div class="title">ListField.cpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Copyright (C) 2012 Southern Storm Software, Pty Ltd.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * copy of this software and associated documentation files (the &quot;Software&quot;),</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * to deal in the Software without restriction, including without limitation</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * the rights to use, copy, modify, merge, publish, distribute, sublicense,</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * and/or sell copies of the Software, and to permit persons to whom the</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * Software is furnished to do so, subject to the following conditions:</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * The above copyright notice and this permission notice shall be included</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * in all copies or substantial portions of the Software.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment"> * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment"> * DEALINGS IN THE SOFTWARE.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="preprocessor">#include &quot;ListField.h&quot;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;</div>
<div class="line"><a name="l00064"></a><span class="lineno"><a class="code" href="classListField.html#a118501da7edb0b0bc6b493734975b4e9"> 64</a></span>&#160;<a class="code" href="classListField.html#a118501da7edb0b0bc6b493734975b4e9" title="Constructs a new list field with a specific label.">ListField::ListField</a>(<span class="keyword">const</span> String &amp;label)</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; : <a class="code" href="classField.html" title="Manages a single data input/output field within a Form.">Field</a>(label)</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; , _items(0)</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; , _itemCount(0)</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; , _value(-1)</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; , _printLen(0)</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;{</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;}</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;</div>
<div class="line"><a name="l00077"></a><span class="lineno"><a class="code" href="classListField.html#aa303898a1f74b52c1c4982653de488b7"> 77</a></span>&#160;<a class="code" href="classListField.html#a118501da7edb0b0bc6b493734975b4e9" title="Constructs a new list field with a specific label.">ListField::ListField</a>(<a class="code" href="classForm.html" title="Manager for a form containing data input/output fields.">Form</a> &amp;form, <span class="keyword">const</span> String &amp;label, ListItems items, <span class="keywordtype">int</span> value)</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; : <a class="code" href="classField.html" title="Manages a single data input/output field within a Form.">Field</a>(form, label)</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; , _items(0)</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; , _itemCount(0)</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; , _value(value)</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; , _printLen(0)</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;{</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <a class="code" href="classListField.html#ae6709bce9355451b651893691456704e" title="Sets the array of items for this list.">setItems</a>(items);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;}</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="code" href="classListField.html#a5d752bd561cde735b175bcdfda55832a"> 87</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="classListField.html#a5d752bd561cde735b175bcdfda55832a" title="Dispatches event via this field.">ListField::dispatch</a>(<span class="keywordtype">int</span> event)</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;{</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="keywordflow">if</span> (event == LCD_BUTTON_DOWN) {</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordflow">if</span> (_value &gt;= (_itemCount - 1))</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <a class="code" href="classListField.html#a266193631e897fb0b46e1270b1d0eb24" title="Sets the value of this list; i.e. the index within items() of the selected item.">setValue</a>(0);</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <a class="code" href="classListField.html#a266193631e897fb0b46e1270b1d0eb24" title="Sets the value of this list; i.e. the index within items() of the selected item.">setValue</a>(_value + 1);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keywordflow">return</span> FORM_CHANGED;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (event == LCD_BUTTON_UP) {</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keywordflow">if</span> (_value &lt;= 0)</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <a class="code" href="classListField.html#a266193631e897fb0b46e1270b1d0eb24" title="Sets the value of this list; i.e. the index within items() of the selected item.">setValue</a>(_itemCount - 1);</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <a class="code" href="classListField.html#a266193631e897fb0b46e1270b1d0eb24" title="Sets the value of this list; i.e. the index within items() of the selected item.">setValue</a>(_value - 1);</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keywordflow">return</span> FORM_CHANGED;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; }</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;}</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160;</div>
<div class="line"><a name="l00105"></a><span class="lineno"><a class="code" href="classListField.html#a191b79b460e45cf48e04b04eface2888"> 105</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="classListField.html#a191b79b460e45cf48e04b04eface2888" title="Enters the field due to form navigation.">ListField::enterField</a>(<span class="keywordtype">bool</span> reverse)</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;{</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <a class="code" href="classListField.html#a191b79b460e45cf48e04b04eface2888" title="Enters the field due to form navigation.">Field::enterField</a>(reverse);</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; _printLen = 0;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; printValue();</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;}</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;</div>
<div class="line"><a name="l00141"></a><span class="lineno"><a class="code" href="classListField.html#ae6709bce9355451b651893691456704e"> 141</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="classListField.html#ae6709bce9355451b651893691456704e" title="Sets the array of items for this list.">ListField::setItems</a>(ListItems items)</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;{</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; _items = <a class="code" href="classListField.html#a4dbbdeebd386551eb8f245b42b45ccf0" title="Returns the array of items in this list.">items</a>;</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; _itemCount = 0;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; <span class="keywordflow">if</span> (items) {</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="keywordflow">for</span> (;;) {</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; ListItem item = (ListItem)pgm_read_word(items);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; <span class="keywordflow">if</span> (!item)</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; ++<a class="code" href="classListField.html#a4dbbdeebd386551eb8f245b42b45ccf0" title="Returns the array of items in this list.">items</a>;</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; ++_itemCount;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; }</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; }</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; <span class="keywordflow">if</span> (_value &gt;= _itemCount)</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; _value = _itemCount - 1;</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="classField.html#a25d86a67b321e8c642edf75a10a35f72" title="Returns true if this field is the currently-displayed field in its owning form; false otherwise...">isCurrent</a>())</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; printValue();</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160;}</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;</div>
<div class="line"><a name="l00178"></a><span class="lineno"><a class="code" href="classListField.html#a266193631e897fb0b46e1270b1d0eb24"> 178</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="classListField.html#a266193631e897fb0b46e1270b1d0eb24" title="Sets the value of this list; i.e. the index within items() of the selected item.">ListField::setValue</a>(<span class="keywordtype">int</span> value)</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;{</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <span class="keywordflow">if</span> (_value != value) {</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; _value = <a class="code" href="classListField.html#aab8477757cd89bacd242c85bac2dccb1" title="Returns the value of this list; i.e. the index within items() of the selected item.">value</a>;</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="keywordflow">if</span> (_value &lt; 0)</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; _value = 0;</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160; <span class="keywordflow">if</span> (_value &gt;= _itemCount)</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; _value = _itemCount - 1;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; <span class="keywordflow">if</span> (<a class="code" href="classField.html#a25d86a67b321e8c642edf75a10a35f72" title="Returns true if this field is the currently-displayed field in its owning form; false otherwise...">isCurrent</a>())</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; printValue();</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; }</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160;}</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160;<span class="keywordtype">void</span> ListField::printValue()</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160;{</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; <a class="code" href="classField.html#a5cf21bf958a71e51feac9e1bf9f599d1" title="Returns the LCD that this field is being drawn on.">lcd</a>()-&gt;setCursor(0, 1);</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; <span class="keywordtype">int</span> len = 0;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; <span class="keywordflow">if</span> (_value &gt;= 0) {</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; ListItem str = (ListItem)pgm_read_word(&amp;(_items[_value]));</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; <span class="keywordtype">char</span> ch;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; <span class="keywordflow">while</span> ((ch = pgm_read_byte(str)) != 0) {</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; <a class="code" href="classField.html#a5cf21bf958a71e51feac9e1bf9f599d1" title="Returns the LCD that this field is being drawn on.">lcd</a>()-&gt;write(ch);</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; ++len;</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; ++str;</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; }</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; }</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; <span class="keywordflow">while</span> (_printLen-- &gt; len)</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; <a class="code" href="classField.html#a5cf21bf958a71e51feac9e1bf9f599d1" title="Returns the LCD that this field is being drawn on.">lcd</a>()-&gt;write(<span class="charliteral">&#39; &#39;</span>);</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; _printLen = len;</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160;}</div>
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