guochanpingtai/.local-browser/linux-722234/chrome-linux/resources/inspector/cm/mark-selection.js

(function(mod){if(typeof exports=="object"&&typeof module=="object")
mod(require("../../lib/codemirror"));else if(typeof define=="function"&&define.amd)
define(["../../lib/codemirror"],mod);else
mod(CodeMirror);})(function(CodeMirror){"use strict";CodeMirror.defineOption("styleSelectedText",false,function(cm,val,old){var prev=old&&old!=CodeMirror.Init;if(val&&!prev){cm.state.markedSelection=[];cm.state.markedSelectionStyle=typeof val=="string"?val:"CodeMirror-selectedtext";reset(cm);cm.on("cursorActivity",onCursorActivity);cm.on("change",onChange);}else if(!val&&prev){cm.off("cursorActivity",onCursorActivity);cm.off("change",onChange);clear(cm);cm.state.markedSelection=cm.state.markedSelectionStyle=null;}});function onCursorActivity(cm){if(cm.state.markedSelection)
cm.operation(function(){update(cm);});}
function onChange(cm){if(cm.state.markedSelection&&cm.state.markedSelection.length)
cm.operation(function(){clear(cm);});}
var CHUNK_SIZE=8;var Pos=CodeMirror.Pos;var cmp=CodeMirror.cmpPos;function coverRange(cm,from,to,addAt){if(cmp(from,to)==0)return;var array=cm.state.markedSelection;var cls=cm.state.markedSelectionStyle;for(var line=from.line;;){var start=line==from.line?from:Pos(line,0);var endLine=line+CHUNK_SIZE,atEnd=endLine>=to.line;var end=atEnd?to:Pos(endLine,0);var mark=cm.markText(start,end,{className:cls});if(addAt==null)array.push(mark);else array.splice(addAt++,0,mark);if(atEnd)break;line=endLine;}}
function clear(cm){var array=cm.state.markedSelection;for(var i=0;i<array.length;++i)array[i].clear();array.length=0;}
function reset(cm){clear(cm);var ranges=cm.listSelections();for(var i=0;i<ranges.length;i++)
coverRange(cm,ranges[i].from(),ranges[i].to());}
function update(cm){if(!cm.somethingSelected())return clear(cm);if(cm.listSelections().length>1)return reset(cm);var from=cm.getCursor("start"),to=cm.getCursor("end");var array=cm.state.markedSelection;if(!array.length)return coverRange(cm,from,to);var coverStart=array[0].find(),coverEnd=array[array.length-1].find();if(!coverStart||!coverEnd||to.line-from.line<=CHUNK_SIZE||cmp(from,coverEnd.to)>=0||cmp(to,coverStart.from)<=0)
return reset(cm);while(cmp(from,coverStart.from)>0){array.shift().clear();coverStart=array[0].find();}
if(cmp(from,coverStart.from)<0){if(coverStart.to.line-from.line<CHUNK_SIZE){array.shift().clear();coverRange(cm,from,coverStart.to,0);}else{coverRange(cm,from,coverStart.from,0);}}
while(cmp(to,coverEnd.to)<0){array.pop().clear();coverEnd=array[array.length-1].find();}
if(cmp(to,coverEnd.to)>0){if(to.line-coverEnd.from.line<CHUNK_SIZE){array.pop().clear();coverRange(cm,coverEnd.from,to);}else{coverRange(cm,coverEnd.to,to);}}}});