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https://github.com/gryf/pentadactyl-pm.git
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change directory structure to follow the more standard package hierarchy
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Doug Kearns
306
content/editor.js
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306
content/editor.js
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/***** BEGIN LICENSE BLOCK ***** {{{
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*
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* Mozilla Public License Notice
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License
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* at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and
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* limitations under the License.
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*
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}}} ***** END LICENSE BLOCK *****/
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// command names taken from:
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// http://developer.mozilla.org/en/docs/Editor_Embedding_Guide
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function Editor() //{{{
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{
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// store our last search with f,F,t or T
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var last_findChar = null;
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var last_findChar_func = null;
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function editor()
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{
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return window.document.commandDispatcher.focusedElement;
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}
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function getController()
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{
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var ed = editor();
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if (!ed || !ed.controllers)
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return null;
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return ed.controllers.getControllerForCommand("cmd_beginLine");
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}
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this.line = function()
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{
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var line = 1;
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var text = editor().value;
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for (var i = 0; i < editor().selectionStart; i++)
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if (text[i] == "\n")
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line++;
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return line;
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}
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this.col = function()
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{
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var col = 1;
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var text = editor().value;
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for (var i = 0; i < editor().selectionStart; i++)
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{
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col++;
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if (text[i] == "\n")
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col = 1;
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}
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return col;
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}
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this.unselectText = function()
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{
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var elt = window.document.commandDispatcher.focusedElement;
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if (elt && elt.selectionEnd)
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elt.selectionEnd = elt.selectionStart;
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}
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this.selectedText = function()
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{
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var text = editor().value;
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return text.substring(editor().selectionStart, editor().selectionEnd);
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}
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this.pasteClipboard = function()
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{
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var elt = window.document.commandDispatcher.focusedElement;
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if (elt.setSelectionRange && readFromClipboard())
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// readFromClipboard would return 'undefined' if not checked
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// dunno about .setSelectionRange
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{
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var rangeStart = elt.selectionStart; // caret position
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var rangeEnd = elt.selectionEnd;
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var tempStr1 = elt.value.substring(0,rangeStart);
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var tempStr2 = readFromClipboard();
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var tempStr3 = elt.value.substring(rangeEnd);
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elt.value = tempStr1 + tempStr2 + tempStr3;
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elt.selectionStart = rangeStart + tempStr2.length;
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elt.selectionEnd = elt.selectionStart;
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}
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}
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// count is optional, defaults to 1
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this.executeCommand = function(cmd, count)
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{
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var controller = getController();
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if (!controller || !controller.supportsCommand(cmd) || !controller.isCommandEnabled(cmd))
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{
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vimperator.beep();
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return false;
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}
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if (typeof count != "number" || count < 1)
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count = 1;
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var did_command = false;
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while(count--)
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{
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// some commands need this try/catch workaround, because a cmd_charPrevious triggered
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// at the beginning of the textarea, would hang the doCommand()
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// good thing is, we need this code anyway for proper beeping
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try
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{
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controller.doCommand(cmd);
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did_command = true;
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}
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catch(e)
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{
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if (!did_command)
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vimperator.beep();
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return false;
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}
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}
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return true;
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}
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// cmd = y, d, c
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// motion = b, 0, gg, G, etc.
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this.executeCommandWithMotion = function(cmd, motion, count)
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{
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if (!typeof count == "number" || count < 1)
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count = 1;
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if (cmd == motion)
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{
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motion = "j";
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count--;
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}
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vimperator.modes.set(vimperator.modes.VISUAL, vimperator.modes.TEXTAREA);
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switch (motion)
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{
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case "j":
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this.executeCommand("cmd_beginLine", 1);
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this.executeCommand("cmd_selectLineNext", count+1);
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break;
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case "k":
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this.executeCommand("cmd_beginLine", 1);
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this.executeCommand("cmd_lineNext", 1);
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this.executeCommand("cmd_selectLinePrevious", count+1);
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break;
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case "h":
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this.executeCommand("cmd_selectCharPrevious", count);
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break;
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case "l":
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this.executeCommand("cmd_selectCharNext", count);
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break;
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case "e":
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case "w":
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this.executeCommand("cmd_selectWordNext", count);
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break;
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case "b":
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this.executeCommand("cmd_selectWordPrevious", count);
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break;
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case "0":
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case "^":
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this.executeCommand("cmd_selectBeginLine", 1);
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break;
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case "$":
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this.executeCommand("cmd_selectEndLine", 1);
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break;
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case "gg":
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this.executeCommand("cmd_endLine", 1);
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this.executeCommand("cmd_selectTop", 1);
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this.executeCommand("cmd_selectBeginLine", 1);
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break;
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case "G":
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this.executeCommand("cmd_beginLine", 1);
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this.executeCommand("cmd_selectBottom", 1);
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this.executeCommand("cmd_selectEndLine", 1);
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break;
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default:
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vimperator.beep();
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return false;
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}
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switch (cmd)
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{
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case "d":
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this.executeCommand("cmd_delete", 1);
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// need to reset the mode as the visual selection changes it
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vimperator.modes.main = vimperator.modes.TEXTAREA;
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break;
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case "c":
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this.executeCommand("cmd_delete", 1);
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vimperator.modes.set(vimperator.modes.INSERT, vimperator.modes.TEXTAREA);
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break;
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case "y":
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this.executeCommand("cmd_copy", 1);
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this.unselectText();
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break;
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default:
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vimperator.beep();
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return false;
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}
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return true;
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}
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// This function will move/select up to given "pos"
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// Simple setSelectionRange() would be better, but we want to maintain the correct
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// order of selectionStart/End (a firefox bug always makes selectionStart <= selectionEnd)
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// Use only for small movements!
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this.moveToPosition = function(pos, forward, select)
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{
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if (!select)
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{
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editor().setSelectionRange(pos, pos);
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return;
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}
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if (forward)
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{
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if (pos <= editor().selectionEnd || pos > editor().value.length)
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return false;
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do // TODO: test code for endless loops
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{
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this.executeCommand("cmd_selectCharNext", 1);
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}
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while ( editor().selectionEnd != pos );
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}
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else
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{
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if (pos >= editor().selectionStart || pos < 0)
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return false;
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do // TODO: test code for endless loops
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{
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this.executeCommand("cmd_selectCharPrevious", 1);
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}
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while ( editor().selectionStart != pos );
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}
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}
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// returns the position of char
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this.findCharForward = function(char, count)
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{
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if (!editor())
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return -1;
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last_findChar = char;
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last_findChar_func = this.findCharForward;
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var text = editor().value;
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if (!typeof count == "number" || count < 1)
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count = 1;
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for (var i = editor().selectionEnd + 1; i < text.length; i++)
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{
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if (text[i] == "\n")
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break;
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if (text[i] == char)
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count--;
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if (count == 0)
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return i + 1; // always position the cursor after the char
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}
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vimperator.beep();
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return -1;
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}
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// returns the position of char
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this.findCharBackward = function(char, count)
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{
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if (!editor())
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return -1;
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last_findChar = char;
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last_findChar_func = this.findCharBackward;
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var text = editor().value;
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if (!typeof count == "number" || count < 1)
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count = 1;
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for (var i = editor().selectionStart - 1; i >= 0; i--)
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{
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if (text[i] == "\n")
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break;
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if (text[i] == char)
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count--;
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if (count == 0)
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return i;
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}
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vimperator.beep();
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return -1;
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}
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} //}}}
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// vim: set fdm=marker sw=4 ts=4 et:
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