mirror of
https://github.com/gryf/pentadactyl-pm.git
synced 2025-12-21 20:07:59 +01:00
568 lines
15 KiB
JavaScript
568 lines
15 KiB
JavaScript
// XXX: remove!
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function save_history()
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{
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set_pref("comp_history", comp_history.join("\n"));
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}
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function load_history()
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{
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var hist = get_pref("comp_history", "");
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comp_history = hist.split("\n");
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}
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function multiliner(line, prev_match, heredoc)
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{
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var end = true;
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var match = tokenize_ex(line, prev_match[4]);
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if (prev_match[3] === undefined) prev_match[3] = '';
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if (match[4] === null)
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{
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focusContent(false, true); // also sets tab_index to -1
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execute_command.apply(this, match);
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}
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else
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{
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if (match[4] === false)
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{
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prev_match[3] = prev_match[3].replace(new RegExp('<<\s*' + prev_match[4]), heredoc.replace(/\n$/, ''));
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focusContent(false, true); // also sets comp_tab_index to -1
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execute_command.apply(this, prev_match);
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prev_match = new Array(5);
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prev_match[3] = '';
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heredoc = '';
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}
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else
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{
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end = false;
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if (!prev_match[3])
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{
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prev_match[0] = match[0];
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prev_match[1] = match[1];
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prev_match[2] = match[2];
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prev_match[3] = match[3];
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prev_match[4] = match[4];
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}
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else
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{
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heredoc += match[3] + '\n';
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}
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}
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}
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return [prev_match, heredoc, end];
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}
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/*
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* This class is used for prompting of user input and echoing of messages
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*
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* it consists of a prompt and command field
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* be sure to only create objects of this class when the chrome is ready
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*/
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function CommandLine ()
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{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////// PRIVATE SECTION /////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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const UNINITIALIZED = -2; // notifies us, if we need to start history/tab-completion from the beginning
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const HISTORY_SIZE = 500;
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var completionlist = new CompletionList();
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var completions = new Array();
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var history = new Array();
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var history_index = UNINITIALIZED;
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var history_start = "";
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// for the example command "open sometext| othertext" (| is the cursor pos)
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var completion_start_index = 0; // will be 5 because we want to complete arguments for the :open command
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var completion_prefix = "" // will be: "open sometext"
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var completion_postfix = ""; // will be: " othertext"
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var wild_index = 0; // keep track how often we press <Tab> in a row
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var completion_index = UNINITIALIZED;
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// The prompt for the current command, for example : or /. Can be blank
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var prompt_widget = document.getElementById('new-vim-commandbar-prompt');
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// The command bar which contains the current command
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var command_widget = document.getElementById('new-vim-commandbar');
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function setNormalStyle()
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{
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command_widget.inputField.setAttribute("style","font-family: monospace;");
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}
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function setErrorStyle()
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{
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command_widget.inputField.setAttribute("style", "font-family: monospace; color:white; background-color:red; font-weight: bold");
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}
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// Sets the prompt - for example, : or /
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function setPrompt(prompt)
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{
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if (typeof(prompt) != "string")
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prompt = "";
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prompt_widget.value = prompt;
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if (prompt)
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{
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// Initially (in the xul) the prompt is 'collapsed', this makes
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// sure it's visible, then we toggle the display which works better
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prompt_widget.style.visibility = 'visible';
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prompt_widget.style.display = 'inline';
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prompt_widget.size = prompt.length;
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}
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else
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{
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prompt_widget.style.display = 'none';
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}
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}
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// Sets the command - e.g. 'tabopen', 'open http://example.com/'
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function setCommand(cmd)
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{
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command_widget.value = cmd;
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}
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function addToHistory(str)
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{
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// first remove all old history elements which have this string
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history = history.filter(function(elem) {
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return elem != str;
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});
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// add string to the command line history
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if (str.length >= 1 && history.push(str) > HISTORY_SIZE)
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history.shift();
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}
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////////////////////////////////////////////////////////////////////////////////
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////////////////////// PUBLIC SECTION //////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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this.getCommand = function()
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{
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return command_widget.value;
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};
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/**
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* All arguments can be ommited and will be defaulted to ""
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*/
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this.open = function(prompt, cmd, minor_mode)
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{
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if (!prompt)
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prompt = "";
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if (!cmd)
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cmd = "";
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if (minor_mode)
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setCurrentMode(minor_mode);
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setNormalStyle();
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setPrompt(prompt);
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setCommand(cmd);
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history_index = UNINITIALIZED;
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completion_index = UNINITIALIZED;
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command_widget.focus();
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};
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this.echo = function(str)
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{
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setNormalStyle();
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setPrompt("");
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setCommand(str);
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};
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this.echoErr = function(str)
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{
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setErrorStyle();
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setPrompt("");
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setCommand(str);
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};
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this.clear = function()
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{
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setPrompt(" "); // looks faster than an empty string
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setCommand("");
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setNormalStyle();
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};
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this.onEvent = function(event)
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{
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//var end = false;
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var command = this.getCommand();
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if(event.type == "blur")
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{
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// when we do a command_widget.focus() we get a blur event immediately,
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// so check if the target is the actualy input field
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if (event.target == command_widget.inputField)
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{
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addToHistory(command);
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completionlist.hide();
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}
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}
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else if(event.type == "input")
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{
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vimperator.triggerCallback("change", command);
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}
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else if(event.type == "keypress")
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{
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var key = keyToString(event);
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/* user pressed ENTER to carry out a command */
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if (key == "<Return>" || key == "<C-j>" || key == "<C-m>")
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{
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// try {
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// [prev_match, heredoc, end] = multiliner(command, prev_match, heredoc);
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// } catch(e) {
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// logObject(e);
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// echoerr(e.name + ": " + e.message);
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// prev_match = new Array(5);
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// heredoc = '';
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// return;
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// }
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// if (!end)
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// command_line.value = "";
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// the command is saved in the blur() handler
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focusContent();
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var res = vimperator.triggerCallback("submit", command);
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return res;
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}
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/* user pressed ESCAPE to cancel this prompt */
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else if (key == "<Esc>" || key == "<C-[>")
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{
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var res = vimperator.triggerCallback("cancel");
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addToHistory(command);
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this.clear();
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focusContent(true, true);
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return res;
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}
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/* user pressed UP or DOWN arrow to cycle history completion */
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else if (key == "<Up>" || key == "<Down>")
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{
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//always reset the tab completion if we use up/down keys
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completion_index = UNINITIALIZED;
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/* save 'start' position for iterating through the history */
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if (history_index == UNINITIALIZED)
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{
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history_index = history.length;
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history_start = command;
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}
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while (history_index >= -1 && history_index <= history.length)
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{
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key == "<Up>" ? history_index-- : history_index++;
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if (history_index == history.length) // user pressed DOWN when there is no newer history item
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{
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setCommand(history_start);
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return;
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}
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// cannot go past history start/end
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if (history_index <= -1)
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{
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history_index = 0;
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beep();
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break;
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}
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if (history_index >= history.length + 1)
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{
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history_index = history.length;
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beep();
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break;
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}
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if (history[history_index].indexOf(history_start) == 0)
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{
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setCommand(history[history_index]);
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return;
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}
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}
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beep();
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}
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/* user pressed TAB to get completions of a command */
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else if (key == "<Tab>" || key == "<S-Tab>")
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{
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//always reset our completion history so up/down keys will start with new values
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history_index = UNINITIALIZED;
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// we need to build our completion list first
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if (completion_index == UNINITIALIZED)
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{
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// FIXME: completions.clear();
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completion_start_index = 0;
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completion_index = -1;
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wild_index = 0;
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completion_prefix = command.substring(0, command_widget.selectionStart);
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completion_postfix = command.substring(command_widget.selectionStart);
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var res = vimperator.triggerCallback("complete", completion_prefix);
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if (res)
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[completion_start_index, completions] = res;
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// Sort the completion list
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if (get_pref('wildoptions').match(/\bsort\b/))
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{
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completions.sort(function(a, b) {
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if (a[0] < b[0])
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return -1;
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else if (a[0] > b[0])
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return 1;
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else
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return 0;
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});
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}
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}
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// we could also return when no completion is found
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// but we fall through to the cleanup anyway
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if (completions.length == 0)
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{
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beep();
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// prevent tab from moving to the next field
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event.preventDefault();
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event.stopPropagation();
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return;
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}
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var wim = get_pref('wildmode').split(/,/);
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var has_list = false;
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var longest = false;
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var full = false;
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var wildtype = wim[wild_index++] || wim[wim.length - 1];
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if (wildtype == 'list' || wildtype == 'list:full' || wildtype == 'list:longest')
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has_list = true;
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if (wildtype == 'longest' || wildtype == 'list:longest')
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longest = true;
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else if (wildtype == 'full' || wildtype == 'list:full')
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full = true;
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// show the list
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if (has_list)
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completionlist.show(completions);
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if (full)
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{
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if (event.shiftKey)
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{
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completion_index--;
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if(completion_index < -1)
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completion_index = completions.length -1;
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}
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else
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{
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completion_index++;
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if(completion_index >= completions.length)
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completion_index = -1;
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}
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showStatusbarMessage("match " + (completion_index+1).toString() + " of " + completions.length.toString(), STATUSFIELD_PROGRESS);
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// if the list is hidden, this function does nothing
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completionlist.selectItem(completion_index);
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}
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if (completion_index == -1 && !longest) // wrapped around matches, reset command line
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{
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if (full && completions.length > 1)
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{
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setCommand(completion_prefix + completion_postfix);
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//completion_list.selectedIndex = -1;
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}
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}
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else
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{
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if (longest && completions.length > 1)
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var compl = get_longest_substring();
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else if (full)
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var compl = completions[completion_index][0];
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else if (completions.length == 1)
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var compl = completions[0][0];
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if (compl)
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{
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setCommand(command.substring(0, completion_start_index) + compl + completion_postfix);
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command_widget.selectionStart = command_widget.selectionEnd = completion_start_index + compl.length;
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// Start a new completion in the next iteration. Useful for commands like :source
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// RFC: perhaps the command can indicate whether the completion should be restarted
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// Needed for :source to grab another set of completions after a file/directory has been filled out
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if (completions.length == 1 && !full)
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completion_index = UNINITIALIZED;
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}
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}
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// prevent tab from moving to the next field
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event.preventDefault();
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event.stopPropagation();
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}
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else if (key == "<BS>")
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{
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// reset the tab completion
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completion_index = history_index = UNINITIALIZED;
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// and blur the command line if there is no text left
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if(command.length == 0)
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{
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this.clear();
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focusContent();
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}
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}
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else // any other key
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{
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// reset the tab completion
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completion_index = history_index = UNINITIALIZED;
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}
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}
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}
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logMessage("CommandLine initialized.");
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}
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function CompletionList()
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{
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const MAX_ITEMS = 10;
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const CONTEXT_LINES = 3;
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var completions = null; // a reference to the Array of completions
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var completion_widget = document.getElementById("vim-completion");
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var list_offset = 0; // how many items is the displayed list shifted from the internal tab index
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var list_index = 0; // list_offset + list_index = completions[item]
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// add a single completion item to the list
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function addItem(completion_item, at_beginning)
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{
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var item = document.createElement("listitem");
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var cell1 = document.createElement("listcell");
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var cell2 = document.createElement("listcell");
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cell1.setAttribute("label", completion_item[0]);
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cell2.setAttribute("label", completion_item[1]);
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cell2.setAttribute("style", "color:green; font-family: sans");
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item.appendChild(cell1);
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item.appendChild(cell2);
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if (at_beginning == true)
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{
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var items = completion_widget.getElementsByTagName("listitem");
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if (items.length > 0)
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completion_widget.insertBefore(item, items[0]);
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else
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completion_widget.appendChild(item);
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}
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else
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completion_widget.appendChild(item);
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}
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/**
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* uses the entries in completions to fill the listbox
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* @param startindex: start at this index and show MAX_ITEMS
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* @returns the number of items
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*/
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function fill(startindex)
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{
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var complength = completions.length;
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// remove all old items first
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var items = completion_widget.getElementsByTagName("listitem");
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while (items.length > 0) { completion_widget.removeChild(items[0]);}
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// find start index
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if (startindex + MAX_ITEMS > complength)
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startindex = complength - MAX_ITEMS;
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if (startindex < 0)
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startindex = 0;
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list_offset = startindex;
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list_index = -1;
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for(i = startindex; i < complength && i < startindex + MAX_ITEMS; i++)
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{
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addItem(completions[i], false);
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}
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return (i-startindex);
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}
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////////////////////////////////////////////////////////////////////////////////
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////////////////////// PUBLIC SECTION //////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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this.len = function() {alert(completions.length);};
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this.show = function(compl)
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{
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completions = compl;
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fill(0);
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var length = completions.length;
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if (length > MAX_ITEMS)
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length = MAX_ITEMS;
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if (length > 1)
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{
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completion_widget.setAttribute("rows", length.toString());
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completion_widget.hidden = false;
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return true;
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}
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else
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{
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completion_widget.hidden = true;
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return false;
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}
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}
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this.hide = function()
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{
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completion_widget.hidden = true;
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}
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/**
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* select index, refill list if necessary
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*/
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this.selectItem = function(index)
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{
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if(completion_widget.hidden)
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return;
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// find start index
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var new_offset = 0;
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if (index >= list_offset + MAX_ITEMS - CONTEXT_LINES)
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new_offset = index - MAX_ITEMS + CONTEXT_LINES + 1;
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else if (index <= list_offset + CONTEXT_LINES)
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new_offset = index - CONTEXT_LINES;
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else
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new_offset = list_offset;
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if (new_offset + MAX_ITEMS > completions.length)
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new_offset = completions.length - MAX_ITEMS;
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if (new_offset < 0)
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new_offset = 0;
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// for speed reason: just remove old item, and add the new one at the end of the list
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var items = completion_widget.getElementsByTagName("listitem");
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if (new_offset == list_offset + 1)
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{
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completion_widget.removeChild(items[0]);
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addItem(completions[index + CONTEXT_LINES], false);
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}
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else if (new_offset == list_offset - 1)
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{
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completion_widget.removeChild(items[items.length-1]);
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addItem(completions[index - CONTEXT_LINES], true);
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}
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else if (new_offset == list_offset)
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{
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// do nothing
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}
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else
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fill(new_offset);
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list_offset = new_offset;
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completion_widget.selectedIndex = index - list_offset;
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}
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}
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// function PreviewWindow()
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// {
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// var completion_widget = document.getElementById("vim-preview_window");
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// }
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// PreviewWindow.protoype = new CompletionList;
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// var pw = new PreviewWindow();
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