mirror of https://github.com/torappinfo/uweb
rebuilding site Sun Aug 29 07:49:58 AM CST 2021
parent
c00a8e0463
commit
b706b0497a
@ -1,20 +1,19 @@
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<script src="config.js"></script>
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<style>
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textarea{width:100%;height:100%;border:none;outline:none}</style>
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<script src="textarea.js"></script>
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<button onclick="onDelete()">X</button>
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<button onclick="onMoveUp()">Up</button>
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<button onclick="onMoveDown()">Down</button>
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<button onclick="onTop()">Top</button>
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<button onclick="onBottom()">Bottom</button>
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<textarea autofocus />
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H1
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h2
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h3
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h4
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h5
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h6
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h7
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h8
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h9
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ha
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@ -0,0 +1,99 @@
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var textarea;
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function getNewlinePos_back(text,pos){
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while(pos>=0 && text.charAt(pos)!='\n') pos--;
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return pos;
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}
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function getNewlinePos_forth(text,pos){
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let len = text.length;
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while(pos<len && text.charAt(pos)!='\n') pos++;
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return pos;
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}
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function deleteLine(ta){
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let text = ta.value;
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let lStart = getNewlinePos_back(text,ta.selectionStart-1);
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let lEnd = getNewlinePos_forth(text,ta.selectionEnd);
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ta.value = text.substring(0,lStart+1) + text.substring(lEnd+1);
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ta.selectionStart = ta.selectionEnd = lStart +1;
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ta.focus();
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}
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function moveUp(ta){
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let text = ta.value;
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let start = ta.selectionStart;
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let end = ta.selectionEnd;
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let lStart = getNewlinePos_back(text,start-1);
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let lEnd = getNewlinePos_forth(text,end);
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let prevS = getNewlinePos_back(text,lStart-1);
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ta.value = text.substring(0,prevS+1)+text.substring(lStart+1,lEnd+1)+
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text.substring(prevS+1,lStart+1) + text.substring(lEnd+1);
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ta.selectionStart = start - (lStart - prevS);
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ta.selectionEnd = end - (lStart - prevS);
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ta.focus();
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}
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function move2Top(ta){
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let text = ta.value;
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let start = ta.selectionStart;
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let end = ta.selectionEnd;
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let lStart = getNewlinePos_back(text,start-1);
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let lEnd = getNewlinePos_forth(text,end);
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ta.value = text.substring(lStart+1,lEnd+1)+text.substring(0,lStart+1)+
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text.substring(lEnd+1);
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ta.selectionStart = start - lStart-1;
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ta.selectionEnd = end - lStart-1;
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ta.focus();
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}
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function move2Bottom(ta){
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let text = ta.value;
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let start = ta.selectionStart;
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let end = ta.selectionEnd;
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let lStart = getNewlinePos_back(text,start-1);
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let lEnd = getNewlinePos_forth(text,end);
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ta.value = text.substring(0,lStart+1)+text.substring(lEnd+1)+
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text.substring(lStart+1,lEnd+1);
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ta.selectionStart = start + text.length - lEnd-1;
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ta.selectionEnd = end + text.length - lEnd-1;
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ta.focus();
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}
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function moveDown(ta){
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let text = ta.value;
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let start = ta.selectionStart;
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let end = ta.selectionEnd;
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let lStart = getNewlinePos_back(text,start-1);
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let lEnd = getNewlinePos_forth(text,end);
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let nextE = getNewlinePos_forth(text,lEnd+1);
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ta.value = text.substring(0,lStart+1) + text.substring(lEnd+1,nextE+1) +
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text.substring(lStart+1,lEnd+1)+text.substring(nextE+1);
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ta.selectionStart = start + (nextE - lEnd);
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ta.selectionEnd = end + (nextE - lEnd);
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ta.focus();
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}
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function onSave(){
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if(!textarea)textarea=document.getElementsByTagName('textarea')[0];let u8=new TextEncoder().encode(textarea.value);let r='';for(let i=0;i<u8.byteLength;i++)r+=String.fromCharCode(u8[i]);location.href='i:0l%f:'+btoa(r);
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}
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function onDelete(){
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if(!textarea)textarea=document.getElementsByTagName('textarea')[0];deleteLine(textarea);
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}
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function onUp(){
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if(!textarea)textarea=document.getElementsByTagName('textarea')[0];moveUp(textarea);
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}
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function onDown(){
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if(!textarea)textarea=document.getElementsByTagName('textarea')[0];moveDown(textarea);
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}
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function onTop(){
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if(!textarea)textarea=document.getElementsByTagName('textarea')[0];move2Top(textarea);
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}
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function onBottom(){
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if(!textarea)textarea=document.getElementsByTagName('textarea')[0];move2Bottom(textarea);
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}
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@ -0,0 +1,13 @@
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var textarea;
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function deleteLine(ta){
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let startPos = ta.selectionStart;
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let endPos = ta.selectionEnd;
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let text = ta.value;
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let lStart = startPos-1;
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while(lStart>=0 && text.charAt(lStart)!='\n') lStart--;
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let lEnd = endPos;
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let len = text.length;
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while(lEnd<len && text.charAt(lEnd)!='\n') lEnd++;
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ta.value = text.substring(0,lStart+1) + text.substring(lEnd+1);
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ta.selectionStart = ta.selectionEnd = lStart +1;
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}
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