2020-10-19 19:25:58 +00:00
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<html> <!-- TODO If I write DOCTYPE HTML something changes but I don't know what. -->
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2020-10-19 18:29:51 +00:00
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<head>
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<meta charset="UTF-8">
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<title>ClickHouse Query</title>
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2020-10-19 19:25:58 +00:00
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<!-- Code style:
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Do not use any JavaScript or CSS frameworks or preprocessors.
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This HTML page should not require any build systems (node.js, npm, gulp, etc.)
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This HTML page should not be minified, instead it should be reasonably minimalistic by itself.
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This HTML page should not load any external resources
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(CSS and JavaScript must be embedded directly to the page. No external fonts or images should be loaded).
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This UI should look as lightweight, clean and fast as possible.
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All UI elements must be aligned in pixel-perfect way.
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There should not be any animations.
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2020-10-19 23:37:10 +00:00
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No unexpected changes in positions of elements while the page is loading.
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Navigation by keyboard should work.
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64-bit numbers must display correctly.
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2020-10-19 19:25:58 +00:00
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-->
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2020-10-19 18:29:51 +00:00
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<style type="text/css">
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2020-10-19 23:37:10 +00:00
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:root {
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--background-color: #DDF8FF; /* Or #FFFBEF; actually many pastel colors look great for light theme. */
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--element-background-color: #FFF;
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--border-color: #EEE;
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--shadow-color: rgba(0, 0, 0, 0.1);
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2020-10-20 01:05:29 +00:00
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--button-color: #FFAA00; /* Orange on light-cyan is especially good. */
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2020-10-19 23:37:10 +00:00
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--text-color: #000;
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--button-active-color: #F00;
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--button-active-text-color: #FFF;
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--misc-text-color: #888;
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--error-color: #FEE; /* Light-pink on light-cyan is so neat, I even want to trigger errors to see this cool combination of colors. */
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--table-header-color: #F8F8F8;
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--table-hover-color: #FFF8EF;
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--null-color: #A88;
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}
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[data-theme="dark"] {
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--background-color: #000;
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--element-background-color: #102030;
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--border-color: #111;
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--shadow-color: rgba(255, 255, 255, 0.1);
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--text-color: #CCC;
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--button-color: #FFAA00;
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--button-text-color: #000;
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--button-active-color: #F00;
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--button-active-text-color: #FFF;
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--misc-text-color: #888;
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2020-10-20 22:13:41 +00:00
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--error-color: #400;
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2020-10-19 23:37:10 +00:00
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--table-header-color: #102020;
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--table-hover-color: #003333;
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--null-color: #A88;
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}
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2020-10-19 18:29:51 +00:00
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html, body
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{
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2020-10-19 19:25:58 +00:00
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/* Personal choice. */
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2020-10-19 18:29:51 +00:00
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font-family: Sans-Serif;
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2020-10-19 23:37:10 +00:00
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background: var(--background-color);
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color: var(--text-color);
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2020-10-19 19:25:58 +00:00
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}
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/* Otherwise Webkit based browsers will display ugly border on focus. */
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2020-10-19 23:37:10 +00:00
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textarea, input, button
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2020-10-19 19:25:58 +00:00
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{
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outline: none;
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2020-10-19 23:37:10 +00:00
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border: none;
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color: var(--text-color);
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2020-10-19 18:29:51 +00:00
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}
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2020-10-19 19:25:58 +00:00
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/* Otherwise scrollbar may appear dynamically and it will alter viewport height,
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then relative heights of elements will change suddenly, and it will break overall impression. */
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/* html
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2020-10-19 18:29:51 +00:00
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{
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overflow-x: scroll;
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}*/
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div
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{
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width: 100%;
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}
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.monospace
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{
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2020-10-19 19:25:58 +00:00
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/* Prefer fonts that have full hinting info. This is important for non-retina displays.
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Also I personally dislike "Ubuntu" font due to the similarity of 'r' and 'г' (it looks very ignorant).
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*/
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2020-10-19 18:29:51 +00:00
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font-family: Liberation Mono, DejaVu Sans Mono, MonoLisa, Consolas, Monospace;
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}
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.shadow
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{
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2020-10-19 23:37:10 +00:00
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box-shadow: 0 0 1rem var(--shadow-color);
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2020-10-19 18:29:51 +00:00
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}
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input, textarea
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{
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2020-10-19 23:37:10 +00:00
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border: 1px solid var(--border-color);
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2020-10-19 19:25:58 +00:00
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/* The font must be not too small (to be inclusive) and not too large (it's less practical and make general feel of insecurity) */
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2020-10-19 18:29:51 +00:00
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font-size: 11pt;
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padding: 0.25rem;
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2020-10-19 23:37:10 +00:00
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background-color: var(--element-background-color);
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2020-10-19 18:29:51 +00:00
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}
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#query
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{
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2020-10-19 19:25:58 +00:00
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/* Make enough space for even huge queries. */
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2020-10-19 18:29:51 +00:00
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height: 20%;
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width: 100%;
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}
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#inputs
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{
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white-space: nowrap;
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width: 100%;
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}
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#url
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{
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width: 70%;
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}
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#user
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{
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width: 15%;
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}
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#password
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{
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width: 15%;
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}
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#run_div
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{
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margin-top: 1rem;
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}
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#run
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{
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2020-10-19 23:37:10 +00:00
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color: var(--button-text-color);
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background-color: var(--button-color);
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2020-10-19 18:29:51 +00:00
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padding: 0.25rem 1rem;
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cursor: pointer;
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font-weight: bold;
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2020-10-19 23:37:10 +00:00
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font-size: 100%; /* Otherwise button element will have lower font size. */
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2020-10-19 18:29:51 +00:00
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}
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2020-10-19 23:37:10 +00:00
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#run:hover, #run:focus
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2020-10-19 18:29:51 +00:00
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{
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2020-10-19 23:37:10 +00:00
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color: var(--button-active-text-color);
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background-color: var(--button-active-color);
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2020-10-19 18:29:51 +00:00
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}
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#stats
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{
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float: right;
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2020-10-19 23:37:10 +00:00
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color: var(--misc-text-color);
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}
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#toggle-light, #toggle-dark
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{
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float: right;
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padding-right: 0.5rem;
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cursor: pointer;
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2020-10-19 18:29:51 +00:00
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}
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.hint
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{
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2020-10-19 23:37:10 +00:00
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color: var(--misc-text-color);
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2020-10-19 18:29:51 +00:00
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}
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#data_div
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{
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margin-top: 1rem;
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}
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#data-table
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{
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border-collapse: collapse;
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border-spacing: 0;
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2020-10-19 19:25:58 +00:00
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/* I need pixel-perfect alignment but not sure the following is correct, please help */
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2020-10-19 18:29:51 +00:00
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min-width: calc(100vw - 2rem);
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}
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2020-10-19 23:37:10 +00:00
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/* Will be displayed when user specified custom format. */
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#data-unparsed
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{
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background-color: var(--element-background-color);
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margin-top: 0rem;
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padding: 0.25rem 0.5rem;
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display: none;
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}
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2020-10-19 18:29:51 +00:00
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td
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{
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2020-10-19 23:37:10 +00:00
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background-color: var(--element-background-color);
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2020-10-19 18:29:51 +00:00
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white-space: nowrap;
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2020-10-19 19:25:58 +00:00
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/* For wide tables any individual column will be no more than 50% of page width. */
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2020-10-19 18:29:51 +00:00
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max-width: 50vw;
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2020-10-19 19:25:58 +00:00
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/* The content is cut unless you hover. */
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2020-10-19 18:29:51 +00:00
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overflow: hidden;
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padding: 0.25rem 0.5rem;
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2020-10-19 23:37:10 +00:00
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border: 1px solid var(--border-color);
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2020-10-19 18:29:51 +00:00
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white-space: pre;
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}
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td.right
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{
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text-align: right;
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}
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th
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{
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padding: 0.25rem 0.5rem;
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text-align: middle;
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2020-10-19 23:37:10 +00:00
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background-color: var(--table-header-color);
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border: 1px solid var(--border-color);
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2020-10-19 18:29:51 +00:00
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}
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2020-10-19 19:25:58 +00:00
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/* The row under mouse pointer is highlight for better legibility. */
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2020-10-19 18:29:51 +00:00
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tr:hover, tr:hover td
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{
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2020-10-19 23:37:10 +00:00
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background-color: var(--table-hover-color);
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2020-10-19 18:29:51 +00:00
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}
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tr:hover
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{
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box-shadow: 0 0 1rem rgba(0, 0, 0, 0.1);
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}
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#error
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{
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2020-10-19 23:37:10 +00:00
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background: var(--error-color);
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2020-10-19 18:29:51 +00:00
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white-space: pre-wrap;
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padding: 0.5rem 1rem;
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display: none;
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}
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2020-10-19 19:25:58 +00:00
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/* When mouse pointer is over table cell, will display full text (with wrap) instead of cut.
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TODO Find a way to make it work on touch devices. */
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2020-10-19 18:29:51 +00:00
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td.left:hover
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{
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white-space: pre-wrap;
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}
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2020-10-19 19:25:58 +00:00
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/* The style for SQL NULL */
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2020-10-19 18:29:51 +00:00
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.null
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{
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2020-10-19 23:37:10 +00:00
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color: var(--null-color);
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2020-10-19 18:29:51 +00:00
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}
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</style>
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</head>
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<body>
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<div id="inputs">
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<input class="monospace shadow" id="url" type="text" value="http://localhost:8123/" /><input class="monospace shadow" id="user" type="text" value="default" /><input class="monospace shadow" id="password" type="password" />
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</div>
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<div>
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2020-10-19 23:37:10 +00:00
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<textarea autofocus spellcheck="false" class="monospace shadow" id="query"></textarea>
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2020-10-19 18:29:51 +00:00
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</div>
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<div id="run_div">
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2020-10-19 23:37:10 +00:00
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<button class="shadow" id="run">Run</button>
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2020-10-19 18:29:51 +00:00
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<span class="hint"> (Ctrl+Enter)</span>
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<span id="stats"></span>
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2020-10-19 23:37:10 +00:00
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<span id="toggle-dark">🌑</span><span id="toggle-light">🌞</span>
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2020-10-19 18:29:51 +00:00
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</div>
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<div id="data_div">
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2020-10-19 23:37:10 +00:00
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<table class="monospace shadow" id="data-table"></table>
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<pre class="monospace shadow" id="data-unparsed"></pre>
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2020-10-19 18:29:51 +00:00
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</div>
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<p id="error" class="monospace shadow">
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</p>
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</body>
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<script type="text/javascript">
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2020-10-19 23:37:10 +00:00
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/// Substitute the address of the server where the page is served.
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if (location.protocol != 'file:') {
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document.getElementById('url').value = location.origin;
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}
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2020-10-19 18:29:51 +00:00
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function post()
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{
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2020-10-20 22:13:41 +00:00
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/// TODO: Avoid race condition on subsequent requests when responses may come out of order.
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/// TODO: Check if URL already contains query string (append parameters).
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2020-10-19 18:29:51 +00:00
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var url = document.getElementById('url').value +
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2020-10-19 23:37:10 +00:00
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/// Ask server to allow cross-domain requests.
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2020-10-19 18:29:51 +00:00
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'?add_http_cors_header=1' +
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'&user=' + encodeURIComponent(document.getElementById('user').value) +
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'&password=' + encodeURIComponent(document.getElementById('password').value) +
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'&default_format=JSONCompact' +
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2020-10-19 23:37:10 +00:00
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/// Safety settings to prevent results that browser cannot display.
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2020-10-19 18:29:51 +00:00
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'&max_result_rows=1000&max_result_bytes=10000000&result_overflow_mode=break';
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var query = document.getElementById('query').value;
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var xhr = new XMLHttpRequest;
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xhr.open('POST', url, true);
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xhr.send(query);
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xhr.onreadystatechange = function()
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{
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if (this.readyState === XMLHttpRequest.DONE) {
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if (this.status === 200) {
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2020-10-19 23:37:10 +00:00
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var json;
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try { json = JSON.parse(this.response); } catch (e) {}
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if (json !== undefined && json.statistics !== undefined) {
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renderResult(json);
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} else {
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renderUnparsedResult(this.response);
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}
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2020-10-19 18:29:51 +00:00
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} else {
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2020-10-20 22:13:41 +00:00
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/// TODO: Proper rendering of network errors.
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2020-10-19 18:29:51 +00:00
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renderError(this.response);
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}
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} else {
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2020-10-19 23:37:10 +00:00
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//console.log(this);
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2020-10-19 18:29:51 +00:00
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}
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}
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}
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document.getElementById('run').onclick = function()
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{
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post();
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}
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document.getElementById('query').onkeypress = function(event)
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{
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2020-10-20 01:08:30 +00:00
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/// Firefox has code 13 for Enter and Chromium has code 10.
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2020-10-19 19:25:58 +00:00
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if (event.ctrlKey && (event.charCode == 13 || event.charCode == 10)) {
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2020-10-19 18:29:51 +00:00
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post();
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}
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}
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function clear()
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{
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var table = document.getElementById('data-table');
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while (table.firstChild) {
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table.removeChild(table.lastChild);
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}
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2020-10-19 23:37:10 +00:00
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document.getElementById('data-unparsed').innerText = '';
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document.getElementById('data-unparsed').style.display = 'none';
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2020-10-19 18:29:51 +00:00
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document.getElementById('error').innerText = '';
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document.getElementById('error').style.display = 'none';
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2020-10-19 23:37:10 +00:00
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document.getElementById('stats').innerText = '';
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2020-10-19 18:29:51 +00:00
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}
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function renderResult(response)
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{
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//console.log(response);
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clear();
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var stats = document.getElementById('stats');
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stats.innerText = 'Elapsed: ' + response.statistics.elapsed.toFixed(3) + " sec, read " + response.statistics.rows_read + " rows.";
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var thead = document.createElement('thead');
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for (var idx in response.meta) {
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var th = document.createElement('th');
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var name = document.createTextNode(response.meta[idx].name);
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th.appendChild(name);
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thead.appendChild(th);
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}
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2020-10-19 23:37:10 +00:00
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/// To prevent hanging the browser, limit the number of cells in a table.
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/// It's important to have the limit on number of cells, not just rows, because tables may be wide or narrow.
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2020-10-19 18:29:51 +00:00
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var max_rows = 10000 / response.meta.length;
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var row_num = 0;
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var tbody = document.createElement('tbody');
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for (var row_idx in response.data) {
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var tr = document.createElement('tr');
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for (var col_idx in response.data[row_idx]) {
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var td = document.createElement('td');
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var cell = response.data[row_idx][col_idx];
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var is_null = (cell === null);
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var content = document.createTextNode(is_null ? 'ᴺᵁᴸᴸ' : cell);
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td.appendChild(content);
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2020-10-20 22:13:41 +00:00
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/// TODO: Execute regexp only once for each column.
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2020-10-19 18:29:51 +00:00
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td.className = response.meta[col_idx].type.match(/^(U?Int|Decimal|Float)/) ? 'right' : 'left';
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if (is_null) {
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td.className += ' null';
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}
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tr.appendChild(td);
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}
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tbody.appendChild(tr);
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++row_num;
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if (row_num >= max_rows) {
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break;
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}
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}
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var table = document.getElementById('data-table');
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table.appendChild(thead);
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table.appendChild(tbody);
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}
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|
2020-10-20 01:08:30 +00:00
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/// A function to render raw data when non-default format is specified.
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2020-10-19 23:37:10 +00:00
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function renderUnparsedResult(response)
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{
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clear();
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var data = document.getElementById('data-unparsed')
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2020-10-20 22:13:41 +00:00
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if (response === '') {
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/// TODO: Fade or remove previous result when new request will be performed.
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response = 'Ok.';
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}
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2020-10-19 23:37:10 +00:00
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data.innerText = response;
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/// inline-block make width adjust to the size of content.
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data.style.display = 'inline-block';
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}
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2020-10-19 18:29:51 +00:00
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function renderError(response)
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{
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clear();
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document.getElementById('error').innerText = response;
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document.getElementById('error').style.display = 'block';
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}
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2020-10-19 23:37:10 +00:00
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2020-10-20 00:32:50 +00:00
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function setColorTheme(theme)
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2020-10-19 23:37:10 +00:00
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{
|
2020-10-20 00:32:50 +00:00
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window.localStorage.setItem('theme', theme);
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document.documentElement.setAttribute('data-theme', theme);
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2020-10-19 23:37:10 +00:00
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}
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2020-10-20 01:08:30 +00:00
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/// The choice of color theme is saved in browser.
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2020-10-20 00:32:50 +00:00
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var theme = window.localStorage.getItem('theme');
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if (theme) {
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setColorTheme(theme);
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2020-10-19 23:37:10 +00:00
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}
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document.getElementById('toggle-light').onclick = function()
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{
|
2020-10-20 00:32:50 +00:00
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setColorTheme('light');
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2020-10-19 23:37:10 +00:00
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}
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document.getElementById('toggle-dark').onclick = function()
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{
|
2020-10-20 00:32:50 +00:00
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setColorTheme('dark');
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2020-10-19 23:37:10 +00:00
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}
|
2020-10-19 18:29:51 +00:00
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</script>
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</html>
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