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//> This file is part of Ymacs, an Emacs-like editor for the Web
//> http://www.ymacs.org/
//>
//> Copyright (c) 2009-2010, Mihai Bazon, Dynarch.com. All rights reserved.
//>
//> Redistribution and use in source and binary forms, with or without
//> modification, are permitted provided that the following conditions are
//> met:
//>
//> * Redistributions of source code must retain the above copyright
//> notice, this list of conditions and the following disclaimer.
//>
//> * Redistributions in binary form must reproduce the above copyright
//> notice, this list of conditions and the following disclaimer in
//> the documentation and/or other materials provided with the
//> distribution.
//>
//> * Neither the name of Dynarch.com nor the names of its contributors
//> may be used to endorse or promote products derived from this
//> software without specific prior written permission.
//>
//> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
//> EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
//> IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
//> PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE
//> FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
//> CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
//> SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
//> INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
//> CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
//> ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
//> THE POSSIBILITY OF SUCH DAMAGE.
// @require ymacs-keymap.js
DEFINE_SINGLETON("Ymacs_Keymap_ISearch", Ymacs_Keymap, function(D, P){
D.KEYS = {
"C-g && ESCAPE": [ "isearch_abort", true ],
"C-w": "isearch_yank_word_or_char",
"C-s": "isearch_forward",
"C-r": "isearch_backward",
"BACKSPACE": function() {
if (this.getMinibuffer().point() > this._isearchContext.mbMark.getPosition()) {
this.getMinibuffer().cmd("backward_delete_char");
this.cmd("goto_char", this._isearchContext.point);
updateIsearch.call(this, this._isearchContext.forward);
}
},
"ENTER": "isearch_abort"
};
D.CONSTRUCT = function() {
this.defaultHandler = [ "isearch_printing_char" ];
};
function initIsearch(fw) {
if (!this._isearchContext) {
this.pushKeymap(Ymacs_Keymap_ISearch());
this.cmd("set_mark_command", this.point());
this.setMinibuffer(fw ? "I-Search: " : "I-Search backward: ");
this._isearchContext = {
forward : fw,
point : this.point(),
mbMark : this.getMinibuffer().createMarker(null, true)
};
return true;
}
};
function updateIsearch(fw) {
this._isearchContext.forward = fw;
this._isearchContext.point = this.point();
var text = getText(this);
if (!/\S/.test(text) && this._isearchLastText) {
this.getMinibuffer()._placeUndoBoundary();
this.getMinibuffer().cmd("insert", this._isearchLastText);
text = this._isearchLastText;
}
return doSearch.call(this, text);
};
function doSearch(text) {
if (text == null)
text = getText(this);
var found = this.cmd("bind_variables", { case_fold_search: text == text.toLowerCase() },
this.cmd,
this._isearchContext.forward ? "search_forward" : "search_backward",
text);
if (found) {
this.cmd("ensure_caret_visible");
var rc_begin = this._positionToRowCol(this.point() + (this._isearchContext.forward ? -1 : 1) * text.length);
this.setOverlay("isearch", {
line1: rc_begin.row, line2: this._rowcol.row,
col1: rc_begin.col, col2: this._rowcol.col
});
}
return found;
};
function getText(o) {
return o.cmd("isearch_get_search_text");
};
Ymacs_Buffer.newCommands({
isearch_get_search_text: Ymacs_Interactive(function() {
if (this._isearchContext) {
return this.getMinibuffer()._bufferSubstring(this._isearchContext.mbMark);
}
}),
isearch_forward: Ymacs_Interactive(function() {
if (!initIsearch.call(this, true)) {
if (!updateIsearch.call(this, true))
this.signalError("No more forward occurrences of the search text");
}
}),
isearch_forward_regexp: Ymacs_Interactive(function() {
this.signalError("Not implemented, but should be easy. Volunteers?");
}),
isearch_backward_regexp: Ymacs_Interactive(function() {
this.signalError("Not implemented, but should be easy. Volunteers?");
}),
isearch_backward: Ymacs_Interactive(function() {
if (!initIsearch.call(this, false)) {
if (!updateIsearch.call(this, false))
this.signalError("No more backward occurrences of the search text");
}
}),
isearch_yank_word_or_char: Ymacs_Interactive(function() {
var pos = this.point(),
pos2 = this.cmd("save_excursion", function(){
this.cmd("forward_word");
return this.point();
});
if (pos2 != pos) {
var word = this._bufferSubstring(pos, pos2);
this.getMinibuffer()._placeUndoBoundary();
this.getMinibuffer().cmd("insert", word.toLowerCase());
word = getText(this);
if (this._isearchContext.forward)
this.cmd("goto_char", pos2 - word.length);
doSearch.call(this, word);
}
}),
isearch_printing_char: Ymacs_Interactive(function() {
var ev = this.interactiveEvent();
if (ev.charCode && !ev.ctrlKey && !ev.altKey) {
this.getMinibuffer().cmd("self_insert_command");
this.cmd("goto_char", this._isearchContext.point);
doSearch.call(this, getText(this));
return ev.domStop = true;
} else if (ev.keyCode != 0 || ev.ctrlKey || ev.altKey) {
this.cmd("isearch_abort");
return false;
}
}),
isearch_abort: Ymacs_Interactive(function(cancelled) {
if (!cancelled)
this._isearchLastText = getText(this);
this.setMinibuffer("");
this.popKeymap(Ymacs_Keymap_ISearch());
this._isearchContext.mbMark.destroy();
this._isearchContext = null;
if (cancelled)
this.cmd("exchange_point_and_mark");
this.deleteOverlay("isearch");
this.deleteOverlay("isearch-lazy");
return true;
})
});
});
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