michael@0: // Define search commands. Depends on dialog.js or another
michael@0: // implementation of the openDialog method.
michael@0: 
michael@0: // Replace works a little oddly -- it will do the replace on the next
michael@0: // Ctrl-G (or whatever is bound to findNext) press. You prevent a
michael@0: // replace by making sure the match is no longer selected when hitting
michael@0: // Ctrl-G.
michael@0: 
michael@0: (function(mod) {
michael@0:   if (typeof exports == "object" && typeof module == "object") // CommonJS
michael@0:     mod(require("../../lib/codemirror"), require("./searchcursor"), require("../dialog/dialog"));
michael@0:   else if (typeof define == "function" && define.amd) // AMD
michael@0:     define(["../../lib/codemirror", "./searchcursor", "../dialog/dialog"], mod);
michael@0:   else // Plain browser env
michael@0:     mod(CodeMirror);
michael@0: })(function(CodeMirror) {
michael@0:   "use strict";
michael@0:   function searchOverlay(query, caseInsensitive) {
michael@0:     var startChar;
michael@0:     if (typeof query == "string") {
michael@0:       startChar = query.charAt(0);
michael@0:       query = new RegExp("^" + query.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&"),
michael@0:                          caseInsensitive ? "i" : "");
michael@0:     } else {
michael@0:       query = new RegExp("^(?:" + query.source + ")", query.ignoreCase ? "i" : "");
michael@0:     }
michael@0:     return {token: function(stream) {
michael@0:       if (stream.match(query)) return "searching";
michael@0:       while (!stream.eol()) {
michael@0:         stream.next();
michael@0:         if (startChar && !caseInsensitive)
michael@0:           stream.skipTo(startChar) || stream.skipToEnd();
michael@0:         if (stream.match(query, false)) break;
michael@0:       }
michael@0:     }};
michael@0:   }
michael@0: 
michael@0:   function SearchState() {
michael@0:     this.posFrom = this.posTo = this.query = null;
michael@0:     this.overlay = null;
michael@0:   }
michael@0:   function getSearchState(cm) {
michael@0:     return cm.state.search || (cm.state.search = new SearchState());
michael@0:   }
michael@0:   function queryCaseInsensitive(query) {
michael@0:     return typeof query == "string" && query == query.toLowerCase();
michael@0:   }
michael@0:   function getSearchCursor(cm, query, pos) {
michael@0:     // Heuristic: if the query string is all lowercase, do a case insensitive search.
michael@0:     return cm.getSearchCursor(query, pos, queryCaseInsensitive(query));
michael@0:   }
michael@0:   function dialog(cm, text, shortText, deflt, f) {
michael@0:     if (cm.openDialog) cm.openDialog(text, f, {value: deflt});
michael@0:     else f(prompt(shortText, deflt));
michael@0:   }
michael@0:   function confirmDialog(cm, text, shortText, fs) {
michael@0:     if (cm.openConfirm) cm.openConfirm(text, fs);
michael@0:     else if (confirm(shortText)) fs[0]();
michael@0:   }
michael@0:   function parseQuery(query) {
michael@0:     var isRE = query.match(/^\/(.*)\/([a-z]*)$/);
michael@0:     if (isRE) {
michael@0:       query = new RegExp(isRE[1], isRE[2].indexOf("i") == -1 ? "" : "i");
michael@0:       if (query.test("")) query = /x^/;
michael@0:     } else if (query == "") {
michael@0:       query = /x^/;
michael@0:     }
michael@0:     return query;
michael@0:   }
michael@0:   var queryDialog;
michael@0:   function doSearch(cm, rev) {
michael@0:     if (!queryDialog) {
michael@0:       let doc = cm.getWrapperElement().ownerDocument;
michael@0:       let inp = doc.createElement("input");
michael@0:       let txt = doc.createTextNode(cm.l10n("findCmd.promptMessage"));
michael@0: 
michael@0:       inp.type = "text";
michael@0:       inp.style.width = "10em";
michael@0:       inp.style.MozMarginStart = "1em";
michael@0: 
michael@0:       queryDialog = doc.createElement("div");
michael@0:       queryDialog.appendChild(txt);
michael@0:       queryDialog.appendChild(inp);
michael@0:     }
michael@0:     var state = getSearchState(cm);
michael@0:     if (state.query) return findNext(cm, rev);
michael@0:     dialog(cm, queryDialog, "Search for:", cm.getSelection(), function(query) {
michael@0:       cm.operation(function() {
michael@0:         if (!query || state.query) return;
michael@0:         state.query = parseQuery(query);
michael@0:         cm.removeOverlay(state.overlay, queryCaseInsensitive(state.query));
michael@0:         state.overlay = searchOverlay(state.query, queryCaseInsensitive(state.query));
michael@0:         cm.addOverlay(state.overlay);
michael@0:         state.posFrom = state.posTo = cm.getCursor();
michael@0:         findNext(cm, rev);
michael@0:       });
michael@0:     });
michael@0:   }
michael@0:   function findNext(cm, rev) {cm.operation(function() {
michael@0:     var state = getSearchState(cm);
michael@0:     var cursor = getSearchCursor(cm, state.query, rev ? state.posFrom : state.posTo);
michael@0:     if (!cursor.find(rev)) {
michael@0:       cursor = getSearchCursor(cm, state.query, rev ? CodeMirror.Pos(cm.lastLine()) : CodeMirror.Pos(cm.firstLine(), 0));
michael@0:       if (!cursor.find(rev)) return;
michael@0:     }
michael@0:     cm.setSelection(cursor.from(), cursor.to());
michael@0:     cm.scrollIntoView({from: cursor.from(), to: cursor.to()});
michael@0:     state.posFrom = cursor.from(); state.posTo = cursor.to();
michael@0:   });}
michael@0:   function clearSearch(cm) {cm.operation(function() {
michael@0:     var state = getSearchState(cm);
michael@0:     if (!state.query) return;
michael@0:     state.query = null;
michael@0:     cm.removeOverlay(state.overlay);
michael@0:   });}
michael@0: 
michael@0:   var replaceQueryDialog =
michael@0:     'Replace: <input type="text" style="width: 10em"/> <span style="color: #888">(Use /re/ syntax for regexp search)</span>';
michael@0:   var replacementQueryDialog = 'With: <input type="text" style="width: 10em"/>';
michael@0:   var doReplaceConfirm = "Replace? <button>Yes</button> <button>No</button> <button>Stop</button>";
michael@0:   function replace(cm, all) {
michael@0:     dialog(cm, replaceQueryDialog, "Replace:", cm.getSelection(), function(query) {
michael@0:       if (!query) return;
michael@0:       query = parseQuery(query);
michael@0:       dialog(cm, replacementQueryDialog, "Replace with:", "", function(text) {
michael@0:         if (all) {
michael@0:           cm.operation(function() {
michael@0:             for (var cursor = getSearchCursor(cm, query); cursor.findNext();) {
michael@0:               if (typeof query != "string") {
michael@0:                 var match = cm.getRange(cursor.from(), cursor.to()).match(query);
michael@0:                 cursor.replace(text.replace(/\$(\d)/g, function(_, i) {return match[i];}));
michael@0:               } else cursor.replace(text);
michael@0:             }
michael@0:           });
michael@0:         } else {
michael@0:           clearSearch(cm);
michael@0:           var cursor = getSearchCursor(cm, query, cm.getCursor());
michael@0:           var advance = function() {
michael@0:             var start = cursor.from(), match;
michael@0:             if (!(match = cursor.findNext())) {
michael@0:               cursor = getSearchCursor(cm, query);
michael@0:               if (!(match = cursor.findNext()) ||
michael@0:                   (start && cursor.from().line == start.line && cursor.from().ch == start.ch)) return;
michael@0:             }
michael@0:             cm.setSelection(cursor.from(), cursor.to());
michael@0:             cm.scrollIntoView({from: cursor.from(), to: cursor.to()});
michael@0:             confirmDialog(cm, doReplaceConfirm, "Replace?",
michael@0:                           [function() {doReplace(match);}, advance]);
michael@0:           };
michael@0:           var doReplace = function(match) {
michael@0:             cursor.replace(typeof query == "string" ? text :
michael@0:                            text.replace(/\$(\d)/g, function(_, i) {return match[i];}));
michael@0:             advance();
michael@0:           };
michael@0:           advance();
michael@0:         }
michael@0:       });
michael@0:     });
michael@0:   }
michael@0: 
michael@0:   CodeMirror.commands.find = function(cm) {clearSearch(cm); doSearch(cm);};
michael@0:   CodeMirror.commands.findNext = doSearch;
michael@0:   CodeMirror.commands.findPrev = function(cm) {doSearch(cm, true);};
michael@0:   CodeMirror.commands.clearSearch = clearSearch;
michael@0:   CodeMirror.commands.replace = replace;
michael@0:   CodeMirror.commands.replaceAll = function(cm) {replace(cm, true);};
michael@0: });