70 lines
9.0 KiB
HTML
70 lines
9.0 KiB
HTML
<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"> <style>
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.COMM {color: #bbb; font-style: italic;}
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.line {border-right: 1px dotted #666; color: #666; font-style: normal;}
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</style></head><body><pre><span class='line'> 1</span> <span class="COMM">/**
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<span class='line'> 2</span> * Module for simplifying Indexed DB access
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<span class='line'> 3</span> */</span><span class="WHIT">
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<span class='line'> 4</span> </span><span class="PUNC">(</span><span class="KEYW">function</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
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<span class='line'> 5</span> </span><span class="WHIT"> </span><span class="STRN">"use strict"</span><span class="PUNC">;</span><span class="WHIT">
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<span class='line'> 6</span> </span><span class="WHIT">
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<span class='line'> 7</span> </span><span class="KEYW">var</span><span class="WHIT"> </span><span class="NAME">db</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">window.indexedDB</span><span class="WHIT"> </span><span class="PUNC">||</span><span class="WHIT"> </span><span class="NAME">window.webkitIndexedDB</span><span class="WHIT"> </span><span class="PUNC">||</span><span class="WHIT"> </span><span class="NAME">window.mozIndexedDB</span><span class="WHIT"> </span><span class="PUNC">||</span><span class="WHIT"> </span><span class="NAME">window.msIndexedDB</span><span class="PUNC">,</span><span class="WHIT">
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<span class='line'> 8</span> </span><span class="WHIT"> </span><span class="NAME">request</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">null</span><span class="PUNC">;</span><span class="WHIT">
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<span class='line'> 9</span> </span><span class="WHIT"> </span><span class="NAME">indexedDB</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="PUNC">}</span><span class="PUNC">;</span><span class="WHIT">
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<span class='line'> 10</span> </span><span class="WHIT">
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<span class='line'> 11</span> </span><span class="COMM">/**
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<span class='line'> 12</span> * @private
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<span class='line'> 13</span> */</span><span class="WHIT">
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<span class='line'> 14</span> </span><span class="NAME">request.onerror</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">event</span><span class="PUNC">)</span><span class="WHIT">
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<span class='line'> 15</span> </span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
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<span class='line'> 16</span> </span><span class="WHIT"> </span><span class="NAME">console.log</span><span class="PUNC">(</span><span class="STRN">"IndexedDB disallowed."</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
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<span class='line'> 17</span> </span><span class="WHIT"> </span><span class="PUNC">}</span><span class="PUNC">;</span><span class="WHIT">
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<span class='line'> 18</span> </span><span class="WHIT">
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<span class='line'> 19</span> </span><span class="COMM">/**
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<span class='line'> 20</span> * @private
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<span class='line'> 21</span> */</span><span class="WHIT">
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<span class='line'> 22</span> </span><span class="WHIT"> </span><span class="NAME">request.onsuccess</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">event</span><span class="PUNC">)</span><span class="WHIT">
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<span class='line'> 23</span> </span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
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<span class='line'> 24</span> </span><span class="WHIT"> </span><span class="COMM">// Connect to the specified db</span><span class="WHIT">
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<span class='line'> 25</span> </span><span class="WHIT"> </span><span class="NAME">indexedDB.current_db</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">request.result</span><span class="PUNC">;</span><span class="WHIT">
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<span class='line'> 26</span> </span><span class="WHIT"> </span><span class="PUNC">}</span><span class="PUNC">;</span><span class="WHIT">
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<span class='line'> 27</span>
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<span class='line'> 28</span> </span><span class="WHIT"> </span><span class="COMM">/**
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<span class='line'> 29</span> * Module for simplifying Indexed DB access
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<span class='line'> 30</span> *
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<span class='line'> 31</span> * @namespace
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<span class='line'> 32</span> * @name indexedDB
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<span class='line'> 33</span> * @memberOf $_
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<span class='line'> 34</span> */</span><span class="WHIT">
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<span class='line'> 35</span> </span><span class="WHIT"> </span><span class="NAME">indexedDB</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
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<span class='line'> 36</span> </span><span class="WHIT"> </span><span class="NAME">current_db</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">null</span><span class="PUNC">,</span><span class="WHIT">
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<span class='line'> 37</span> </span><span class="WHIT"> </span><span class="COMM">/**
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<span class='line'> 38</span> * Connects to an indexedDB database
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<span class='line'> 39</span> *
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<span class='line'> 40</span> * @memberOf $_.indexedDB
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<span class='line'> 41</span> * @name connect
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<span class='line'> 42</span> * @function
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<span class='line'> 43</span> * @param string dbname
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<span class='line'> 44</span> * @param [int] version
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<span class='line'> 45</span> * @param [function] onupgradeneeded
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<span class='line'> 46</span> */</span><span class="WHIT">
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<span class='line'> 47</span> </span><span class="WHIT"> </span><span class="NAME">connect</span><span class="PUNC">:</span><span class="WHIT"> </span><span class="KEYW">function</span><span class="PUNC">(</span><span class="NAME">dbname</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">version</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">onupgradeneeded</span><span class="PUNC">)</span><span class="WHIT">
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<span class='line'> 48</span> </span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
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<span class='line'> 49</span> </span><span class="WHIT"> </span><span class="NAME">version</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">version</span><span class="WHIT"> </span><span class="PUNC">||</span><span class="WHIT"> </span><span class="NUMB">0</span><span class="PUNC">;</span><span class="WHIT">
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<span class='line'> 50</span> </span><span class="WHIT">
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<span class='line'> 51</span> </span><span class="KEYW">if</span><span class="PUNC">(</span><span class="KEYW">typeof</span><span class="WHIT"> </span><span class="NAME">onupgradeneeded</span><span class="WHIT"> </span><span class="PUNC">!==</span><span class="WHIT"> </span><span class="STRN">"undefined"</span><span class="PUNC">)</span><span class="WHIT">
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<span class='line'> 52</span> </span><span class="WHIT"> </span><span class="PUNC">{</span><span class="WHIT">
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<span class='line'> 53</span> </span><span class="WHIT"> </span><span class="NAME">request.onupgradeneeded</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">onupgradeneeded</span><span class="PUNC">;</span><span class="WHIT">
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<span class='line'> 54</span> </span><span class="WHIT"> </span><span class="PUNC">}</span><span class="WHIT">
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<span class='line'> 55</span> </span><span class="WHIT">
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<span class='line'> 56</span> </span><span class="COMM">// Ask for permission to use db</span><span class="WHIT">
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<span class='line'> 57</span> </span><span class="WHIT"> </span><span class="NAME">this.current_db</span><span class="WHIT"> </span><span class="PUNC">=</span><span class="WHIT"> </span><span class="NAME">db.open</span><span class="PUNC">(</span><span class="NAME">dbname</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">version</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
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<span class='line'> 58</span> </span><span class="WHIT"> </span><span class="PUNC">}</span><span class="WHIT">
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<span class='line'> 59</span> </span><span class="WHIT"> </span><span class="PUNC">}</span><span class="PUNC">;</span><span class="WHIT">
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<span class='line'> 60</span> </span><span class="WHIT">
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<span class='line'> 61</span> </span><span class="NAME">$_.ext</span><span class="PUNC">(</span><span class="STRN">'indexedDB'</span><span class="PUNC">,</span><span class="WHIT"> </span><span class="NAME">indexedDB</span><span class="PUNC">)</span><span class="PUNC">;</span><span class="WHIT">
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<span class='line'> 62</span> </span><span class="WHIT">
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<span class='line'> 63</span> </span><span class="PUNC">}</span><span class="PUNC">(</span><span class="PUNC">)</span><span class="PUNC">)</span><span class="PUNC">;</span></pre></body></html> |