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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE
(function(mod) {
if (typeof exports == "object" && typeof module == "object") // CommonJS
mod(require("../../lib/codemirror"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
"use strict";
var Pos = CodeMirror.Pos;
function findParagraph(cm, pos, options) {
var startRE = options.paragraphStart || cm.getHelper(pos, "paragraphStart");
for (var start = pos.line, first = cm.firstLine(); start > first; --start) {
var line = cm.getLine(start);
if (startRE && startRE.test(line)) break;
if (!/\S/.test(line)) { ++start; break; }
}
var endRE = options.paragraphEnd || cm.getHelper(pos, "paragraphEnd");
for (var end = pos.line + 1, last = cm.lastLine(); end <= last; ++end) {
var line = cm.getLine(end);
if (endRE && endRE.test(line)) { ++end; break; }
if (!/\S/.test(line)) break;
}
return {from: start, to: end};
}
function findBreakPoint(text, column, wrapOn, killTrailingSpace) {
for (var at = column; at > 0; --at)
if (wrapOn.test(text.slice(at - 1, at + 1))) break;
for (var first = true;; first = false) {
var endOfText = at;
if (killTrailingSpace)
while (text.charAt(endOfText - 1) == " ") --endOfText;
if (endOfText == 0 && first) at = column;
else return {from: endOfText, to: at};
}
}
function wrapRange(cm, from, to, options) {
from = cm.clipPos(from); to = cm.clipPos(to);
var column = options.column || 80;
var wrapOn = options.wrapOn || /\s\S|-[^\.\d]/;
var killTrailing = options.killTrailingSpace !== false;
var changes = [], curLine = "", curNo = from.line;
var lines = cm.getRange(from, to, false);
if (!lines.length) return null;
var leadingSpace = lines[0].match(/^[ \t]*/)[0];
for (var i = 0; i < lines.length; ++i) {
var text = lines[i], oldLen = curLine.length, spaceInserted = 0;
if (curLine && text && !wrapOn.test(curLine.charAt(curLine.length - 1) + text.charAt(0))) {
curLine += " ";
spaceInserted = 1;
}
var spaceTrimmed = "";
if (i) {
spaceTrimmed = text.match(/^\s*/)[0];
text = text.slice(spaceTrimmed.length);
}
curLine += text;
if (i) {
var firstBreak = curLine.length > column && leadingSpace == spaceTrimmed &&
findBreakPoint(curLine, column, wrapOn, killTrailing);
// If this isn't broken, or is broken at a different point, remove old break
if (!firstBreak || firstBreak.from != oldLen || firstBreak.to != oldLen + spaceInserted) {
changes.push({text: [spaceInserted ? " " : ""],
from: Pos(curNo, oldLen),
to: Pos(curNo + 1, spaceTrimmed.length)});
} else {
curLine = leadingSpace + text;
++curNo;
}
}
while (curLine.length > column) {
var bp = findBreakPoint(curLine, column, wrapOn, killTrailing);
changes.push({text: ["", leadingSpace],
from: Pos(curNo, bp.from),
to: Pos(curNo, bp.to)});
curLine = leadingSpace + curLine.slice(bp.to);
++curNo;
}
}
if (changes.length) cm.operation(function() {
for (var i = 0; i < changes.length; ++i) {
var change = changes[i];
if (change.text || CodeMirror.cmpPos(change.from, change.to))
cm.replaceRange(change.text, change.from, change.to);
}
});
return changes.length ? {from: changes[0].from, to: CodeMirror.changeEnd(changes[changes.length - 1])} : null;
}
CodeMirror.defineExtension("wrapParagraph", function(pos, options) {
options = options || {};
if (!pos) pos = this.getCursor();
var para = findParagraph(this, pos, options);
return wrapRange(this, Pos(para.from, 0), Pos(para.to - 1), options);
});
CodeMirror.commands.wrapLines = function(cm) {
cm.operation(function() {
var ranges = cm.listSelections(), at = cm.lastLine() + 1;
for (var i = ranges.length - 1; i >= 0; i--) {
var range = ranges[i], span;
if (range.empty()) {
var para = findParagraph(cm, range.head, {});
span = {from: Pos(para.from, 0), to: Pos(para.to - 1)};
} else {
span = {from: range.from(), to: range.to()};
}
if (span.to.line >= at) continue;
at = span.from.line;
wrapRange(cm, span.from, span.to, {});
}
});
};
CodeMirror.defineExtension("wrapRange", function(from, to, options) {
return wrapRange(this, from, to, options || {});
});
CodeMirror.defineExtension("wrapParagraphsInRange", function(from, to, options) {
options = options || {};
var cm = this, paras = [];
for (var line = from.line; line <= to.line;) {
var para = findParagraph(cm, Pos(line, 0), options);
paras.push(para);
line = para.to;
}
var madeChange = false;
if (paras.length) cm.operation(function() {
for (var i = paras.length - 1; i >= 0; --i)
madeChange = madeChange || wrapRange(cm, Pos(paras[i].from, 0), Pos(paras[i].to - 1), options);
});
return madeChange;
});
});
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