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<div class="title">ListField.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
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<a name="l00002"></a>00002 <span class="comment"> * Copyright (C) 2012 Southern Storm Software, Pty Ltd.</span>
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<a name="l00003"></a>00003 <span class="comment"> *</span>
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<a name="l00004"></a>00004 <span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a</span>
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<a name="l00005"></a>00005 <span class="comment"> * copy of this software and associated documentation files (the "Software"),</span>
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<a name="l00006"></a>00006 <span class="comment"> * to deal in the Software without restriction, including without limitation</span>
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<a name="l00007"></a>00007 <span class="comment"> * the rights to use, copy, modify, merge, publish, distribute, sublicense,</span>
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<a name="l00008"></a>00008 <span class="comment"> * and/or sell copies of the Software, and to permit persons to whom the</span>
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<a name="l00009"></a>00009 <span class="comment"> * Software is furnished to do so, subject to the following conditions:</span>
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<a name="l00010"></a>00010 <span class="comment"> *</span>
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<a name="l00011"></a>00011 <span class="comment"> * The above copyright notice and this permission notice shall be included</span>
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<a name="l00012"></a>00012 <span class="comment"> * in all copies or substantial portions of the Software.</span>
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<a name="l00013"></a>00013 <span class="comment"> *</span>
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<a name="l00014"></a>00014 <span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS</span>
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<a name="l00015"></a>00015 <span class="comment"> * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span>
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<a name="l00016"></a>00016 <span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span>
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<a name="l00017"></a>00017 <span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span>
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<a name="l00018"></a>00018 <span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING</span>
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<a name="l00019"></a>00019 <span class="comment"> * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER</span>
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<a name="l00020"></a>00020 <span class="comment"> * DEALINGS IN THE SOFTWARE.</span>
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<a name="l00021"></a>00021 <span class="comment"> */</span>
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<a name="l00022"></a>00022
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<a name="l00023"></a>00023 <span class="preprocessor">#include "ListField.h"</span>
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<a name="l00024"></a>00024 <span class="preprocessor">#include <string.h></span>
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<a name="l00025"></a>00025
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<a name="l00064"></a><a class="code" href="classListField.html#a118501da7edb0b0bc6b493734975b4e9">00064</a> <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 &label)
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<a name="l00065"></a>00065 : <a class="code" href="classField.html" title="Manages a single data input/output field within a Form.">Field</a>(label)
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<a name="l00066"></a>00066 , _items(0)
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<a name="l00067"></a>00067 , _itemCount(0)
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<a name="l00068"></a>00068 , _value(-1)
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<a name="l00069"></a>00069 , _printLen(0)
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<a name="l00070"></a>00070 {
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<a name="l00071"></a>00071 }
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<a name="l00072"></a>00072
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<a name="l00077"></a><a class="code" href="classListField.html#aa303898a1f74b52c1c4982653de488b7">00077</a> <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> &form, <span class="keyword">const</span> String &label, ListItems items, <span class="keywordtype">int</span> value)
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<a name="l00078"></a>00078 : <a class="code" href="classField.html" title="Manages a single data input/output field within a Form.">Field</a>(form, label)
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<a name="l00079"></a>00079 , _items(0)
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<a name="l00080"></a>00080 , _itemCount(0)
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<a name="l00081"></a>00081 , _value(value)
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<a name="l00082"></a>00082 , _printLen(0)
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<a name="l00083"></a>00083 {
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<a name="l00084"></a>00084 <a class="code" href="classListField.html#ae6709bce9355451b651893691456704e" title="Sets the array of items for this list.">setItems</a>(items);
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<a name="l00085"></a>00085 }
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<a name="l00086"></a>00086
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<a name="l00087"></a><a class="code" href="classListField.html#a5d752bd561cde735b175bcdfda55832a">00087</a> <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)
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<a name="l00088"></a>00088 {
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<a name="l00089"></a>00089 <span class="keywordflow">if</span> (event == LCD_BUTTON_DOWN) {
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<a name="l00090"></a>00090 <span class="keywordflow">if</span> (_value >= (_itemCount - 1))
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<a name="l00091"></a>00091 <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);
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<a name="l00092"></a>00092 <span class="keywordflow">else</span>
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<a name="l00093"></a>00093 <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);
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<a name="l00094"></a>00094 <span class="keywordflow">return</span> FORM_CHANGED;
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<a name="l00095"></a>00095 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (event == LCD_BUTTON_UP) {
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<a name="l00096"></a>00096 <span class="keywordflow">if</span> (_value <= 0)
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<a name="l00097"></a>00097 <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);
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<a name="l00098"></a>00098 <span class="keywordflow">else</span>
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<a name="l00099"></a>00099 <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);
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<a name="l00100"></a>00100 <span class="keywordflow">return</span> FORM_CHANGED;
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<a name="l00101"></a>00101 }
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<a name="l00102"></a>00102 <span class="keywordflow">return</span> -1;
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<a name="l00103"></a>00103 }
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<a name="l00104"></a>00104
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<a name="l00105"></a><a class="code" href="classListField.html#a191b79b460e45cf48e04b04eface2888">00105</a> <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)
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<a name="l00106"></a>00106 {
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<a name="l00107"></a>00107 <a class="code" href="classListField.html#a191b79b460e45cf48e04b04eface2888" title="Enters the field due to form navigation.">Field::enterField</a>(reverse);
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<a name="l00108"></a>00108 _printLen = 0;
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<a name="l00109"></a>00109 printValue();
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<a name="l00110"></a>00110 }
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<a name="l00111"></a>00111
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<a name="l00141"></a><a class="code" href="classListField.html#ae6709bce9355451b651893691456704e">00141</a> <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)
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<a name="l00142"></a>00142 {
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<a name="l00143"></a>00143 _items = <a class="code" href="classListField.html#a4dbbdeebd386551eb8f245b42b45ccf0" title="Returns the array of items in this list.">items</a>;
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<a name="l00144"></a>00144 _itemCount = 0;
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<a name="l00145"></a>00145 <span class="keywordflow">if</span> (items) {
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<a name="l00146"></a>00146 <span class="keywordflow">for</span> (;;) {
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<a name="l00147"></a>00147 ListItem item = (ListItem)pgm_read_word(items);
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<a name="l00148"></a>00148 <span class="keywordflow">if</span> (!item)
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<a name="l00149"></a>00149 <span class="keywordflow">break</span>;
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<a name="l00150"></a>00150 ++<a class="code" href="classListField.html#a4dbbdeebd386551eb8f245b42b45ccf0" title="Returns the array of items in this list.">items</a>;
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<a name="l00151"></a>00151 ++_itemCount;
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<a name="l00152"></a>00152 }
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<a name="l00153"></a>00153 }
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<a name="l00154"></a>00154 <span class="keywordflow">if</span> (_value >= _itemCount)
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<a name="l00155"></a>00155 _value = _itemCount - 1;
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<a name="l00156"></a>00156 <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>())
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<a name="l00157"></a>00157 printValue();
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<a name="l00158"></a>00158 }
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<a name="l00159"></a>00159
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<a name="l00178"></a><a class="code" href="classListField.html#a266193631e897fb0b46e1270b1d0eb24">00178</a> <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)
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<a name="l00179"></a>00179 {
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<a name="l00180"></a>00180 <span class="keywordflow">if</span> (_value != value) {
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<a name="l00181"></a>00181 _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>;
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<a name="l00182"></a>00182 <span class="keywordflow">if</span> (_value < 0)
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<a name="l00183"></a>00183 _value = 0;
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<a name="l00184"></a>00184 <span class="keywordflow">if</span> (_value >= _itemCount)
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<a name="l00185"></a>00185 _value = _itemCount - 1;
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<a name="l00186"></a>00186 <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>())
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<a name="l00187"></a>00187 printValue();
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<a name="l00188"></a>00188 }
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<a name="l00189"></a>00189 }
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<a name="l00190"></a>00190
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<a name="l00191"></a>00191 <span class="keywordtype">void</span> ListField::printValue()
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<a name="l00192"></a>00192 {
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<a name="l00193"></a>00193 <a class="code" href="classField.html#a5cf21bf958a71e51feac9e1bf9f599d1" title="Returns the LCD that this field is being drawn on.">lcd</a>()->setCursor(0, 1);
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<a name="l00194"></a>00194 <span class="keywordtype">int</span> len = 0;
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<a name="l00195"></a>00195 <span class="keywordflow">if</span> (_value >= 0) {
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<a name="l00196"></a>00196 ListItem str = (ListItem)pgm_read_word(&(_items[_value]));
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<a name="l00197"></a>00197 <span class="keywordtype">char</span> ch;
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<a name="l00198"></a>00198 <span class="keywordflow">while</span> ((ch = pgm_read_byte(str)) != 0) {
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<a name="l00199"></a>00199 <a class="code" href="classField.html#a5cf21bf958a71e51feac9e1bf9f599d1" title="Returns the LCD that this field is being drawn on.">lcd</a>()->write(ch);
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<a name="l00200"></a>00200 ++len;
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<a name="l00201"></a>00201 ++str;
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<a name="l00202"></a>00202 }
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<a name="l00203"></a>00203 }
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<a name="l00204"></a>00204 <span class="keywordflow">while</span> (_printLen-- > len)
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<a name="l00205"></a>00205 <a class="code" href="classField.html#a5cf21bf958a71e51feac9e1bf9f599d1" title="Returns the LCD that this field is being drawn on.">lcd</a>()->write(<span class="charliteral">' '</span>);
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<a name="l00206"></a>00206 _printLen = len;
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<a name="l00207"></a>00207 }
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</pre></div></div>
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