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 * Distributed under the BSD license:
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 * Copyright (c) 2010, Ajax.org B.V.
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 *       notice, this list of conditions and the following disclaimer.
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 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
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define(function(require, exports, module) {

var config = require("../config");
var oop = require("../lib/oop");
var HashHandler = require("../keyboard/hash_handler").HashHandler;
var occurStartCommand = require("./occur_commands").occurStartCommand;

// These commands can be installed in a normal key handler to start iSearch:
exports.iSearchStartCommands = [{
    name: "iSearch",
    bindKey: {win: "Ctrl-F", mac: "Command-F"},
    exec: function(editor, options) {
        config.loadModule(["core", "ace/incremental_search"], function(e) {
            var iSearch = e.iSearch = e.iSearch || new e.IncrementalSearch();
            iSearch.activate(editor, options.backwards);
            if (options.jumpToFirstMatch) iSearch.next(options);
        });
    },
    readOnly: true
}, {
    name: "iSearchBackwards",
    exec: function(editor, jumpToNext) { editor.execCommand('iSearch', {backwards: true}); },
    readOnly: true
}, {
    name: "iSearchAndGo",
    bindKey: {win: "Ctrl-K", mac: "Command-G"},
    exec: function(editor, jumpToNext) { editor.execCommand('iSearch', {jumpToFirstMatch: true, useCurrentOrPrevSearch: true}); },
    readOnly: true
}, {
    name: "iSearchBackwardsAndGo",
    bindKey: {win: "Ctrl-Shift-K", mac: "Command-Shift-G"},
    exec: function(editor) { editor.execCommand('iSearch', {jumpToFirstMatch: true, backwards: true, useCurrentOrPrevSearch: true}); },
    readOnly: true
}];

// These commands are only available when incremental search mode is active:
exports.iSearchCommands = [{
    name: "restartSearch",
    bindKey: {win: "Ctrl-F", mac: "Command-F"},
    exec: function(iSearch) {
        iSearch.cancelSearch(true);
    },
    readOnly: true,
    isIncrementalSearchCommand: true
}, {
    name: "searchForward",
    bindKey: {win: "Ctrl-S|Ctrl-K", mac: "Ctrl-S|Command-G"},
    exec: function(iSearch, options) {
        options.useCurrentOrPrevSearch = true;
        iSearch.next(options);
    },
    readOnly: true,
    isIncrementalSearchCommand: true
}, {
    name: "searchBackward",
    bindKey: {win: "Ctrl-R|Ctrl-Shift-K", mac: "Ctrl-R|Command-Shift-G"},
    exec: function(iSearch, options) {
        options.useCurrentOrPrevSearch = true;
        options.backwards = true;
        iSearch.next(options);
    },
    readOnly: true,
    isIncrementalSearchCommand: true
}, {
    name: "extendSearchTerm",
    exec: function(iSearch, string) {
        iSearch.addChar(string);
    },
    readOnly: true,
    isIncrementalSearchCommand: true
}, {
    name: "extendSearchTermSpace",
    bindKey: "space",
    exec: function(iSearch) { iSearch.addChar(' '); },
    readOnly: true,
    isIncrementalSearchCommand: true
}, {
    name: "shrinkSearchTerm",
    bindKey: "backspace",
    exec: function(iSearch) {
        iSearch.removeChar();
    },
    readOnly: true,
    isIncrementalSearchCommand: true
}, {
    name: 'confirmSearch',
    bindKey: 'return',
    exec: function(iSearch) { iSearch.deactivate(); },
    readOnly: true,
    isIncrementalSearchCommand: true
}, {
    name: 'cancelSearch',
    bindKey: 'esc|Ctrl-G',
    exec: function(iSearch) { iSearch.deactivate(true); },
    readOnly: true,
    isIncrementalSearchCommand: true
}, {
    name: 'occurisearch',
    bindKey: 'Ctrl-O',
    exec: function(iSearch) {
        var options = oop.mixin({}, iSearch.$options);
        iSearch.deactivate();
        occurStartCommand.exec(iSearch.$editor, options);
    },
    readOnly: true,
    isIncrementalSearchCommand: true
}];

function IncrementalSearchKeyboardHandler(iSearch) {
    this.$iSearch = iSearch;
}

oop.inherits(IncrementalSearchKeyboardHandler, HashHandler);

;(function() {

    this.attach = function(editor) {
        var iSearch = this.$iSearch;
        HashHandler.call(this, exports.iSearchCommands, editor.commands.platform);
        this.$commandExecHandler = editor.commands.addEventListener('exec', function(e) {
            if (!e.command.isIncrementalSearchCommand) return undefined;
            e.stopPropagation();
            e.preventDefault();
            return e.command.exec(iSearch, e.args || {});
        });
    }

    this.detach = function(editor) {
        if (!this.$commandExecHandler) return;
        editor.commands.removeEventListener('exec', this.$commandExecHandler);
        delete this.$commandExecHandler;
    }

    var handleKeyboard$super = this.handleKeyboard;
    this.handleKeyboard = function(data, hashId, key, keyCode) {
        var cmd = handleKeyboard$super.call(this, data, hashId, key, keyCode);
        if (cmd.command) { return cmd; }
        if (hashId == -1) {
            var extendCmd = this.commands.extendSearchTerm;
            if (extendCmd) { return {command: extendCmd, args: key}; }
        }
        return {command: "null", passEvent: hashId == 0 || hashId == 4};
    }

}).call(IncrementalSearchKeyboardHandler.prototype);


exports.IncrementalSearchKeyboardHandler = IncrementalSearchKeyboardHandler;

});