word/editor.js

   1 document.addEventListener('DOMContentLoaded', () => {
   2         document.querySelectorAll('#search').forEach(p => {
   3                 let [input, button] = p.children;
   4                 button.onclick = e => {
   5                         if (input.value && input.offsetWidth > 50) {
   6                                 return true; // bubble to submit
   7                         }
   8                         // make visible first
   9                         input.focus();
  10                         e.preventDefault();
  11                         return false;
  12                 };
  13         });
  14
  15         document.querySelectorAll('.multiinput > input[id]').forEach(el => {
  16                 el.oninput = e => {
  17                         if (e.target.value == '') return;
  18                         // insert another empty input element option
  19                         let add = e.target.cloneNode(true);
  20                         add.value = '';
  21                         add.oninput = e.target.oninput;
  22                         e.target.parentNode.appendChild(add);
  23                         e.target.oninput = undefined;
  24                         e.target.removeAttribute('id');
  25                 };
  26         });
  27
  28         let wpinput = document.getElementById('wptitle');
  29         if (wpinput) {
  30                 let wpbutton = wpinput.parentNode.appendChild(document.createElement('button'));
  31                 wpbutton.type = 'button';
  32                 wpbutton.append('Download');
  33                 wpbutton.onclick = () => {
  34                         let wptitle = wpinput.value || document.getElementById('form').value;
  35                         let wplang = document.getElementById('lang').value;
  36                         if (wplang == 'la') wplang = 'en'; // most likely presence of scientific names
  37                         let wpapi = `https://${wplang}.wikipedia.org/w/api.php`;
  38                         let wppage = wpapi+'?action=parse&format=json&origin=*&prop=text|langlinks&page='+wptitle;
  39                         fetch(wppage).then(res => res.json()).then(json => {
  40                                 if (json.error) throw `error returned: ${json.error.info}`;
  41                                 wpinput.value = json.parse.title;
  42
  43                                 let wptext = json.parse.text['*'];
  44                                 let transrow = document.getElementById('trans-la');
  45                                 if (transrow && !transrow.value && wptext) {
  46                                         const binom = wptext.match(/ class="binomial">.*?<i>(.*?)<\/i>/);
  47                                         if (binom) {
  48                                                 transrow.value = binom[1]
  49                                         }
  50                                 }
  51
  52                                 // translations from language links
  53                                 let wplangs = json.parse.langlinks;
  54                                 if (wplangs) wplangs.forEach(wptrans => {
  55                                         let transrow = document.getElementById('trans-' + wptrans.lang);
  56                                         if (!transrow || transrow.value) return;
  57                                         transrow.value = wptrans['*'].replace(/([^,(]*).*/, (link, short) => {
  58                                                 return short.toLocaleLowerCase(wptrans.lang).trimEnd() + ' [' + link + ']';
  59                                         });
  60                                 });
  61
  62                                 // copy first paragraph to story
  63                                 let storyinput = document.getElementById('story');
  64                                 if (storyinput && !storyinput.value && wptext) {
  65                                         storyinput.value = wptext
  66                                                 .replace(/<h2.*/s, '') // prefix
  67                                                 .replace(/<table.*?<\/table>/sg, '') // ignore infobox
  68                                                 .match(/<p>(.*?)<\/p>/s)[0] // first paragraph
  69                                                 .replace(/<[^>]*>/g, '') // strip html tags
  70                                 }
  71
  72                                 // list images in article html
  73                                 let imginput = document.getElementById('source');
  74                                 if (!imginput || imginput.value) return;
  75                                 let wpimages = wptext.match(/<img\s[^>]+>/g);
  76                                 let wpselect = wpinput.parentNode.appendChild(document.createElement('ul'));
  77                                 wpselect.className = 'popup';
  78                                 wpimages.forEach(img => {
  79                                         let selectitem = wpselect.appendChild(document.createElement('li'));
  80                                         selectitem.insertAdjacentHTML('beforeend', img);
  81                                         selectitem.onclick = e => {
  82                                                 let imgsrc = e.target.src
  83                                                         .replace(/^(?=\/\/)/, 'https:')
  84                                                         .replace(/\/thumb(\/.+)\/[^\/]+$/, '$1');
  85                                                 imginput.value = imgsrc;
  86                                                 wpselect.remove();
  87                                                 return false;
  88                                         };
  89                                 });
  90                         }).catch(error => alert(error));
  91                         return false;
  92                 };
  93                 wpbutton = wpinput.parentNode.appendChild(document.createElement('button'));
  94                 wpbutton.type = 'button';
  95                 wpbutton.append('Visit');
  96                 wpbutton.onclick = () => {
  97                         let wptitle = wpinput.value || document.getElementById('form').value;
  98                         let wplang = document.getElementById('lang').value;
  99                         let wpurl =
 100                                 wplang == 'la' ? `https://species.wikimedia.org/wiki/${wptitle}` :
 101                                 `https://${wplang}.wikipedia.org/wiki/${wptitle}`;
 102                         window.open(wpurl, 'sheet-wikipedia').focus();
 103                         return false;
 104                 };
 105         }
 106
 107         let imgpreview = document.getElementById('sourcepreview');
 108         if (imgpreview) {
 109                 let imginput = document.getElementById('source');
 110                 imginput.parentNode.parentNode.append(imgpreview); // separate row
 111                 let previewbutton = imginput.parentNode.appendChild(document.createElement('button'));
 112                 previewbutton.type = 'button';
 113                 previewbutton.append('View');
 114                 previewbutton.onclick = () => {
 115                         previewbutton.childNodes[0].nodeValue = imgpreview.hidden ? 'Hide' : 'View';
 116                         imgpreview.hidden = !imgpreview.hidden;
 117                 };
 118         }
 119
 120         let thumbpreview = document.getElementById('convertpreview');
 121         if (thumbpreview && imgpreview) {
 122                 thumbpreview.onclick = e => {
 123                         thumbpreview.onclick = null; // setup once
 124                         const cropinput = document.getElementById('crop32');
 125                         const imgselect = thumbpreview.children[0];
 126                         const canvas = [thumbpreview.clientWidth, thumbpreview.clientHeight];
 127                         const border = [canvas[0], canvas[0] * imgpreview.height / imgpreview.width];
 128                         const minscale = Math.max(1, canvas[1] / border[1]); // 100% or fit width
 129                         let crop = cropinput.value.split(/[^0-9]/).map(pos => pos / 1000);
 130                         let scale = 1 / (crop[2] - crop[0]) || minscale;
 131                         crop.push(0); // defined y dimension
 132                         crop.splice(2); // end coordinates applied to zoom
 133                         crop = crop.map((rel, axis) => rel * border[axis % 2] * scale);
 134
 135                         let drag, pinch;
 136                         function applydrag(e) {
 137                                 const touch = e.touches ? e.touches[0] : e;
 138                                 let pos = [touch.pageX, touch.pageY];
 139                                 if (e.type === 'touchmove' && e.touches.length > 1) {
 140                                         // distance to second point
 141                                         pos[0] -= e.touches[1].pageX;
 142                                         pos[1] -= e.touches[1].pageY;
 143                                         const span = Math.sqrt(pos[0]**2 + pos[1]**2);
 144                                         if (pinch) {
 145                                                 cropzoom(.01 * (span - pinch));
 146                                         }
 147                                         pinch = span;
 148                                         return;
 149                                 }
 150                                 if (drag) {
 151                                         // apply drag delta to crop position
 152                                         crop[0] += drag[0] - pos[0];
 153                                         crop[1] += drag[1] - pos[1];
 154                                         recrop();
 155                                 }
 156                                 drag = pos;
 157                         }
 158
 159                         function recrop() {
 160                                 [0, 1].forEach(axis => {
 161                                         if (crop[axis] > border[axis] * scale - canvas[axis]) {
 162                                                 crop[axis] = border[axis] * scale - canvas[axis]; // max bound
 163                                         }
 164                                         if (crop[axis] < 0) {
 165                                                 crop[axis] = 0; // min bound
 166                                         }
 167                                 });
 168                                 imgselect.style.left = -crop[0]+'px';
 169                                 imgselect.style.top  = -crop[1]+'px';
 170                                 imgselect.style.width = (scale * 100)+'%';
 171                                 cropinput.value = [
 172                                         crop[0] / border[0],
 173                                         crop[1] / border[1],
 174                                         (crop[0] + canvas[0]) / border[0],
 175                                         (crop[1] + canvas[1]) / border[1],
 176                                 ].map(pos => Math.round(1000 * pos / scale));
 177                         }
 178
 179                         function cropzoom(delta) {
 180                                 if (scale + delta < minscale) {
 181                                         delta = minscale - scale; // scale = 1
 182                                 }
 183                                 [0, 1].forEach(axis => {
 184                                         // same area center at altered scale
 185                                         crop[axis] += (crop[axis] + border[axis] / 2) / scale * delta;
 186                                 });
 187                                 scale += delta;
 188                                 recrop();
 189                         }
 190
 191                         imgselect.src = imgpreview.src;
 192                         imgselect.style.cursor = 'grab';
 193                         imgselect.style.position = 'absolute';
 194                         recrop();
 195
 196                         imgselect.ontouchstart =
 197                         imgselect.onmousedown = e => {
 198                                 e.preventDefault();
 199                                 drag = pinch = false;
 200                                 applydrag(e);
 201                                 imgselect.style.cursor = 'grabbing';
 202                                 window.ontouchmove =
 203                                 window.onmousemove = e => {
 204                                         e.preventDefault();
 205                                         applydrag(e);
 206                                 };
 207                                 window.ontouchend =
 208                                 window.onmouseup = e => {
 209                                         e.preventDefault();
 210                                         imgselect.style.cursor = 'grab';
 211                                         window.ontouchmove = window.ontouchend =
 212                                         window.onmousemove = window.onmouseup = null;
 213                                 };
 214                         };
 215
 216                         imgselect.onwheel = e => {
 217                                 e.preventDefault();
 218                                 let delta = (-e.deltaY || e.wheelDelta) * .001 * scale;
 219                                 if (e.deltaMode == 1) { // DOM_DELTA_LINE
 220                                         delta *= 18; // convert number of lines to pixels
 221                                 }
 222                                 cropzoom(delta);
 223                         };
 224                 };
 225         }
 226
 227         let translist = document.getElementById('trans');
 228         if (translist) {
 229                 let langoptions = Array.prototype.filter.call(document.getElementById('lang').options, opt => {
 230                         if (document.getElementById('trans-' + opt.value)) return;
 231                         if (document.getElementById('lang').value == opt.value) return;
 232                         return true;
 233                 });
 234                 if (!langoptions.length) return;
 235
 236                 let transadd = translist.appendChild(document.createElement('li'));
 237                 let transselect = transadd.appendChild(document.createElement('select'));
 238                 transselect.appendChild(document.createElement('option'));
 239                 for (let langoption of langoptions) {
 240                         let transoption = document.createElement('option');
 241                         transoption.value = langoption.value;
 242                         transoption.append(langoption.label);
 243                         transselect.appendChild(transoption);
 244                 }
 245                 transselect.onchange = e => {
 246                         let inputlang = e.target.selectedOptions[0];
 247                         let transadded = translist.insertBefore(document.createElement('li'), transadd);
 248                         let translabel = transadded.appendChild(document.createElement('label'));
 249                         translabel.append(inputlang.label.replace(/ (.+)/, ' ')); //TODO title = $1
 250                         let transinput = transadded.appendChild(document.createElement('input'));
 251                         transinput.name = 'trans-'+inputlang.value;
 252                         translabel.setAttribute('for', transinput.id = transinput.name);
 253                         inputlang.remove();
 254                         if (e.target.length <= 1) e.target.remove();
 255                         transinput.focus();
 256                 };
 257         }
 258 });