;OOf| ddlmZmZ ddlZddlZddlZddlZddlZddlZddl Z ddl m Z dZ dZ dZdZdZd Zd Zid d d ddddddddddddddddddd d!d"d#d$d%d&d'd(d)d*Zd+d,j)ed-d.Dcgc] }e| c}zZd/Zd0d1ezd2zd3e zd4zgZGd5d6ZdAd7Zd8Zd9Zd:ZGd;d<Zea dBd=Z!Gd>d?Z"d@Z#ycc}w)C)divisionprint_functionN)utila2 // Urwid web (CGI/Asynchronous Javascript) display module // Copyright (C) 2004-2005 Ian Ward // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Lesser General Public // License as published by the Free Software Foundation; either // version 2.1 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // // Urwid web site: http://excess.org/urwid/ colours = new Object(); colours = { '0': "black", '1': "#c00000", '2': "green", '3': "#804000", '4': "#0000c0", '5': "#c000c0", '6': "teal", '7': "silver", '8': "gray", '9': "#ff6060", 'A': "lime", 'B': "yellow", 'C': "#8080ff", 'D': "#ff40ff", 'E': "aqua", 'F': "white" }; keycodes = new Object(); keycodes = { 8: "backspace", 9: "tab", 13: "enter", 27: "esc", 33: "page up", 34: "page down", 35: "end", 36: "home", 37: "left", 38: "up", 39: "right", 40: "down", 45: "insert", 46: "delete", 112: "f1", 113: "f2", 114: "f3", 115: "f4", 116: "f5", 117: "f6", 118: "f7", 119: "f8", 120: "f9", 121: "f10", 122: "f11", 123: "f12" }; var conn = null; var char_width = null; var char_height = null; var screen_x = null; var screen_y = null; var urwid_id = null; var send_conn = null; var send_queue_max = 32; var send_queue = new Array(send_queue_max); var send_queue_in = 0; var send_queue_out = 0; var check_font_delay = 1000; var send_more_delay = 100; var poll_again_delay = 500; var document_location = null; var update_method = "multipart"; var sending = false; var lastkeydown = null; function setup_connection() { if (window.XMLHttpRequest) { conn = new XMLHttpRequest(); } else if (window.ActiveXObject) { conn = new ActiveXObject("Microsoft.XMLHTTP"); } if (conn == null) { set_status("Connection Failed"); alert( "Can't figure out how to send request." ); return; } try{ conn.multipart = true; }catch(e){ update_method = "polling"; } conn.onreadystatechange = handle_recv; conn.open("POST", document_location, true); conn.setRequestHeader("X-Urwid-Method",update_method); conn.setRequestHeader("Content-type","text/plain"); conn.send("window resize " +screen_x+" "+screen_y+"\n"); } function do_poll() { if (urwid_id == null){ alert("that's unpossible!"); return; } if (window.XMLHttpRequest) { conn = new XMLHttpRequest(); } else if (window.ActiveXObject) { conn = new ActiveXObject("Microsoft.XMLHTTP"); } conn.onreadystatechange = handle_recv; conn.open("POST", document_location, true); conn.setRequestHeader("X-Urwid-Method","polling"); conn.setRequestHeader("X-Urwid-ID",urwid_id); conn.setRequestHeader("Content-type","text/plain"); conn.send("eh?"); } function handle_recv() { if( ! conn ){ return;} if( conn.readyState != 4) { return; } if( conn.status == 404 && urwid_id != null) { set_status("Connection Closed"); return; } if( conn.status == 403 && update_method == "polling" ) { set_status("Server Refused Connection"); alert("This server does not allow polling clients.\n\n" + "Please use a web browser with multipart support " + "such as Mozilla Firefox"); return; } if( conn.status == 503 ) { set_status("Connection Failed"); alert("The server has reached its maximum number of "+ "connections.\n\nPlease try again later."); return; } if( conn.status != 200) { set_status("Connection Failed"); alert("Error from server: "+conn.statusText); return; } if( urwid_id == null ){ urwid_id = conn.getResponseHeader("X-Urwid-ID"); if( send_queue_in != send_queue_out ){ // keys waiting do_send(); } if(update_method=="polling"){ set_status("Polling"); }else if(update_method=="multipart"){ set_status("Connected"); } } if( conn.responseText == "" ){ if(update_method=="polling"){ poll_again(); } return; // keepalive } if( conn.responseText == "Z" ){ set_status("Connection Closed"); update_method = null; return; } var text = document.getElementById('text'); var last_screen = Array(text.childNodes.length); for( var i=0; i k ){ text.replaceChild(ln, text.childNodes[k]); }else{ text.appendChild(ln); } k = k+1; ln = document.createElement('span'); }else if( f.charAt(0) == "<" ){ line_number = parseInt(f.substr(1)); if( line_number == k ){ k = k +1; continue; } var clone = last_screen[line_number].cloneNode(true); if( text.childNodes.length > k ){ text.replaceChild(clone, text.childNodes[k]); }else{ text.appendChild(clone); } k = k+1; }else{ var span=make_span(f.substr(2),f.charAt(0),f.charAt(1)); ln.appendChild( span ); } } for( var i=k; i < text.childNodes.length; i++ ){ text.removeChild(last_screen[i]); } if(update_method=="polling"){ poll_again(); } } function poll_again(){ if(conn.status == 200){ setTimeout("do_poll();",poll_again_delay); } } function load_web_display(){ if( document.documentURI ){ document_location = document.documentURI; }else{ document_location = document.location; } document.onkeypress = body_keypress; document.onkeydown = body_keydown; document.onresize = body_resize; body_resize(); send_queue_out = send_queue_in; // don't queue the first resize set_status("Connecting"); setup_connection(); setTimeout("check_fontsize();",check_font_delay); } function set_status( status ){ var s = document.getElementById('status'); var t = document.createTextNode(status); s.replaceChild(t, s.firstChild); } function make_span(s, fg, bg){ d = document.createElement('span'); d.style.backgroundColor = colours[bg]; d.style.color = colours[fg]; d.appendChild(document.createTextNode(s)); return d; } function body_keydown(e){ if (conn == null){ return; } if (!e) var e = window.event; if (e.keyCode) code = e.keyCode; else if (e.which) code = e.which; var mod = ""; var key; if( e.ctrlKey ){ mod = "ctrl " + mod; } if( e.altKey || e.metaKey ){ mod = "meta " + mod; } if( e.shiftKey && e.charCode == 0 ){ mod = "shift " + mod; } key = keycodes[code]; if( key != undefined ){ lastkeydown = key; send_key( mod + key ); stop_key_event(e); return false; } } function body_keypress(e){ if (conn == null){ return; } if (!e) var e = window.event; if (e.keyCode) code = e.keyCode; else if (e.which) code = e.which; var mod = ""; var key; if( e.ctrlKey ){ mod = "ctrl " + mod; } if( e.altKey || e.metaKey ){ mod = "meta " + mod; } if( e.shiftKey && e.charCode == 0 ){ mod = "shift " + mod; } if( e.charCode != null && e.charCode != 0 ){ key = String.fromCharCode(e.charCode); }else if( e.charCode == null ){ key = String.fromCharCode(code); }else{ key = keycodes[code]; if( key == undefined || lastkeydown == key ){ lastkeydown = null; stop_key_event(e); return false; } } send_key( mod + key ); stop_key_event(e); return false; } function stop_key_event(e){ e.cancelBubble = true; if( e.stopPropagation ){ e.stopPropagation(); } if( e.preventDefault ){ e.preventDefault(); } } function send_key( key ){ if( (send_queue_in+1)%send_queue_max == send_queue_out ){ // buffer overrun return; } send_queue[send_queue_in] = key; send_queue_in = (send_queue_in+1)%send_queue_max; if( urwid_id != null ){ if (send_conn == undefined || send_conn.ready_state != 4 ){ send_more(); return; } do_send(); } } function do_send() { if( ! urwid_id ){ return; } if( ! update_method ){ return; } // connection closed if( send_queue_in == send_queue_out ){ return; } if( sending ){ //var queue_delta = send_queue_in - send_queue_out; //if( queue_delta < 0 ){ queue_delta += send_queue_max; } //set_status("Sending (queued "+queue_delta+")"); return; } try{ sending = true; //set_status("starting send"); if( send_conn == null ){ if (window.XMLHttpRequest) { send_conn = new XMLHttpRequest(); } else if (window.ActiveXObject) { send_conn = new ActiveXObject("Microsoft.XMLHTTP"); } }else if( send_conn.status != 200) { alert("Error from server: "+send_conn.statusText); return; }else if(send_conn.readyState != 4 ){ alert("not ready on send connection"); return; } } catch(e) { alert(e); sending = false; return; } send_conn.open("POST", document_location, true); send_conn.onreadystatechange = send_handle_recv; send_conn.setRequestHeader("Content-type","text/plain"); send_conn.setRequestHeader("X-Urwid-ID",urwid_id); var tmp_send_queue_in = send_queue_in; var out = null; if( send_queue_out > tmp_send_queue_in ){ out = send_queue.slice(send_queue_out).join("\n") if( tmp_send_queue_in > 0 ){ out += "\n" + send_queue.slice(0,tmp_send_queue_in).join("\n"); } }else{ out = send_queue.slice(send_queue_out, tmp_send_queue_in).join("\n"); } send_queue_out = tmp_send_queue_in; //set_status("Sending"); send_conn.send( out +"\n" ); } function send_handle_recv() { if( send_conn.readyState != 4) { return; } if( send_conn.status == 404) { set_status("Connection Closed"); update_method = null; return; } if( send_conn.status != 200) { alert("Error from server: "+send_conn.statusText); return; } sending = false; if( send_queue_out != send_queue_in ){ send_more(); } } function send_more(){ setTimeout("do_send();",send_more_delay); } function check_fontsize(){ body_resize() setTimeout("check_fontsize();",check_font_delay); } function body_resize(){ var t = document.getElementById('testchar'); var t2 = document.getElementById('testchar2'); var text = document.getElementById('text'); var window_width; var window_height; if (window.innerHeight) { window_width = window.innerWidth; window_height = window.innerHeight; }else{ window_width = document.documentElement.clientWidth; window_height = document.documentElement.clientHeight; //var z = "CI:"; for(var i in bod){z = z + " " + i;} alert(z); } char_width = t.offsetLeft / 44; var avail_width = window_width-18; var avail_width_mod = avail_width % char_width; var x_size = (avail_width - avail_width_mod)/char_width; char_height = t2.offsetTop - t.offsetTop; var avail_height = window_height-text.offsetTop-10; var avail_height_mod = avail_height % char_height; var y_size = (avail_height - avail_height_mod)/char_height; text.style.width = x_size*char_width+"px"; text.style.height = y_size*char_height+"px"; if( screen_x != x_size || screen_y != y_size ){ send_key("window resize "+x_size+" "+y_size); } screen_x = x_size; screen_y = y_size; } <dii@black0zdark red1z dark green2brown3z dark blue4z dark magenta5z dark cyan6 light gray7z dark gray8z light red9z light greenAyellowBz light blueCz light magentaDz light cyanEwhiteFz ???????????????????????????????? ah body { margin: 8px 8px 8px 8px; border: 0; color: black; background-color: silver; font-family: fixed; overflow: hidden; } form { margin: 0 0 8px 0; } #text { position: relative; background-color: silver; width: 100%; height: 100%; margin: 3px 0 0 0; border: 1px solid #999; } #page { position: relative; width: 100%;height: 100%;} z Urwid Web Display - z! 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