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annotate shterm.js @ 12:9e1d83f50c9e

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shterm.js: Add some debugging messages.
author John "Elwin" Edwards <elwin@sdf.org>
date Sun, 13 May 2012 08:47:35 -0700
parents 481dcee353c9
children bf7c26d0b66d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1
9bef0941c6dd Add a few comments.
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1 /* shterm.js: browser-side JavaScript to handle I/O for termemu.js when it
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2 * is running a shell via the webtty.js server.
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3 */
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4
0
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5 // A state machine that keeps track of polling the server.
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6 var ajaxstate = {
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7 state: 0,
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8 timerID: null,
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9 clear: function () {
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10 if (this.timerID != null) {
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11 window.clearTimeout(this.timerID);
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12 this.timerID = null;
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13 }
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14 },
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15 set: function (ms) {
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16 this.clear();
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17 this.timerID = window.setTimeout(getData, ms);
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18 },
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19 gotdata: function () {
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20 this.set(100);
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21 this.state = 0;
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22 },
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23 gotnothing: function () {
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24 if (this.state == 0) {
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25 this.set(100);
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26 this.state = 1;
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27 }
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28 else if (this.state == 1) {
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29 this.set(300);
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30 this.state = 2;
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31 }
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32 else if (this.state == 2) {
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33 this.set(1000);
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34 this.state = 3;
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35 }
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36 else {
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37 this.set(5000);
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38 this.state = 3;
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39 }
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40 },
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41 posted: function () {
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42 this.set(100);
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43 this.state = 0;
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44 }
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45 };
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46
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47 function writeData(hexstr) {
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48 var codenum;
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49 var codes = [];
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50 var nc;
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51 var u8wait = 0; /* Stores bits from previous bytes of multibyte sequences. */
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52 var expect = 0; /* The number of 10------ bytes expected. */
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53 /* UTF-8 translation. */
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54 for (var i = 0; i < hexstr.length; i += 2) {
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55 nc = Number("0x" + hexstr.substr(i, 2));
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56 if (nc < 0x7F) {
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57 /* 0------- */
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58 codes.push(nc);
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59 /* Any incomplete sequence will be discarded. */
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60 u8wait = 0;
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61 expect = 0;
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62 }
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63 else if (nc < 0xC0) {
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64 /* 10------ : part of a multibyte sequence */
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65 if (expect > 0) {
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66 u8wait <<= 6;
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67 u8wait += (nc & 0x3F);
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68 expect--;
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69 if (expect == 0) {
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70 codes.push(u8wait);
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71 u8wait = 0;
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72 }
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73 }
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74 else {
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75 /* Assume an initial byte was missed. */
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76 u8wait = 0;
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77 }
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78 }
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79 /* These will all discard any incomplete sequence. */
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80 else if (nc < 0xE0) {
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81 /* 110----- : introduces 2-byte sequence */
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82 u8wait = (nc & 0x1F);
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83 expect = 1;
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84 }
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85 else if (nc < 0xF0) {
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86 /* 1110---- : introduces 3-byte sequence */
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87 u8wait = (nc & 0x0F);
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88 expect = 2;
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89 }
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90 else if (nc < 0xF8) {
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91 /* 11110--- : introduces 4-byte sequence */
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92 u8wait = (nc & 0x07);
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93 expect = 3;
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94 }
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95 else if (nc < 0xFC) {
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96 /* 111110-- : introduces 5-byte sequence */
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97 u8wait = (nc & 0x03);
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98 expect = 4;
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99 }
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100 else if (nc < 0xFE) {
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101 /* 1111110- : introduces 6-byte sequence */
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102 u8wait = (nc & 0x01);
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103 expect = 5;
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104 }
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105 else {
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106 /* 1111111- : should never appear */
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107 u8wait = 0;
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108 expect = 0;
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109 }
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110 /* Supporting all 31 bits is probably overkill... */
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111 }
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112 termemu.write(codes);
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113 return;
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114 }
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115
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116 function getData() {
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117 if (!termemu.alive)
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118 return;
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119 var datareq = new XMLHttpRequest();
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120 datareq.onreadystatechange = function () {
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121 if (datareq.readyState == 4 && datareq.status == 200) {
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122 var response = JSON.parse(this.responseText);
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123 if (!response.t)
0
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124 return;
11
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125 else if (response.t == "E") {
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126 if (response.c == 1) {
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127 termemu.alive = false;
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128 debug(1, "Server error: " + response.s);
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129 }
0
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130 }
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131 else if (response.t == "n")
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132 ajaxstate.gotnothing();
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133 else if (response.t == "d") {
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134 writeData(response.d);
12
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135 debug(1, "Got packet " + response.n);
0
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136 ajaxstate.gotdata();
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137 }
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138 return;
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139 }
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140 };
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141 datareq.open('GET', '/feed', true);
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142 datareq.send(null);
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143 return;
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144 }
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145
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146 function postResponseHandler() {
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147 if (this.readyState == 4 && this.status == 200) {
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148 var response = JSON.parse(this.responseText);
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149 if (!response.t || response.t == "n")
0
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
150 return;
11
481dcee353c9 webtty: switch all server responses to JSON.
John "Elwin" Edwards <elwin@sdf.org>
parents: 10
diff changeset
151 else if (response.t == "E") {
481dcee353c9 webtty: switch all server responses to JSON.
John "Elwin" Edwards <elwin@sdf.org>
parents: 10
diff changeset
152 if (response.c == 1) {
481dcee353c9 webtty: switch all server responses to JSON.
John "Elwin" Edwards <elwin@sdf.org>
parents: 10
diff changeset
153 termemu.alive = false;
481dcee353c9 webtty: switch all server responses to JSON.
John "Elwin" Edwards <elwin@sdf.org>
parents: 10
diff changeset
154 debug(1, "Server error: " + response.s);
481dcee353c9 webtty: switch all server responses to JSON.
John "Elwin" Edwards <elwin@sdf.org>
parents: 10
diff changeset
155 }
0
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
156 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
157 }
11
481dcee353c9 webtty: switch all server responses to JSON.
John "Elwin" Edwards <elwin@sdf.org>
parents: 10
diff changeset
158 else if (response.t != "d")
0
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
159 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
160 /* It is a data message */
11
481dcee353c9 webtty: switch all server responses to JSON.
John "Elwin" Edwards <elwin@sdf.org>
parents: 10
diff changeset
161 if (response.d) {
481dcee353c9 webtty: switch all server responses to JSON.
John "Elwin" Edwards <elwin@sdf.org>
parents: 10
diff changeset
162 writeData(response.d);
12
9e1d83f50c9e shterm.js: Add some debugging messages.
John "Elwin" Edwards <elwin@sdf.org>
parents: 11
diff changeset
163 debug(1, "Got packet " + response.n);
0
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
164 }
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
165 ajaxstate.posted();
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
166 return;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
167 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
168 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
169
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
170 function sendback(str) {
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
171 /* For responding to terminal queries. */
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
172 var datareq = new XMLHttpRequest();
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
173 datareq.onreadystatechange = postResponseHandler;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
174 datareq.open('POST', '/feed', true);
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
175 datareq.send("keys=" + str);
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
176 return;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
177 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
178
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
179 function sendkey(ev) {
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
180 var keynum = ev.keyCode;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
181 var code;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
182 if (keynum >= ev.DOM_VK_A && keynum <= ev.DOM_VK_Z) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
183 /* Letters. This assumes the codes are 65-90. */
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
184 if (ev.ctrlKey)
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
185 keynum -= 64;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
186 else if (!ev.shiftKey)
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
187 keynum += 32;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
188 code = keynum.toString(16);
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
189 if (code.length < 2)
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
190 code = "0" + code;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
191 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
192 else if (keynum >= ev.DOM_VK_0 && keynum <= ev.DOM_VK_9) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
193 /* The number row. */
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
194 if (ev.shiftKey) {
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
195 code = numShifts[keynum - 48].toString(16);
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
196 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
197 else {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
198 code = keynum.toString(16);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
199 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
200 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
201 else if (keynum in keyHexCodes) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
202 if (ev.shiftKey)
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
203 code = keyHexCodes[keynum][1];
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
204 else
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
205 code = keyHexCodes[keynum][0];
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
206 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
207 else if (keynum == ev.DOM_VK_SHIFT || keynum == ev.DOM_VK_CONTROL ||
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
208 keynum == ev.DOM_VK_ALT || keynum == ev.DOM_VK_CAPS_LOCK) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
209 return;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
210 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
211 else {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
212 debug(1, "Ignoring keycode " + keynum);
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
213 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
214 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
215 if (termemu.alive)
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
216 ev.preventDefault();
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
217 var datareq = new XMLHttpRequest();
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
218 datareq.onreadystatechange = postResponseHandler;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
219 datareq.open('POST', '/feed', true);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
220 datareq.send("keys=" + code);
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
221 //dkey(code);
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
222 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
223 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
224
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
225 var charshifts = { '-': "5f", '=': "2b", '[': "7b", ']': "7d", '\\': "7c",
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
226 ';': "3a", '\'': "22", ',': "3c", '.': "3e", '/': "3f", '`': "7e"
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
227 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
228
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
229 function vkey(c) {
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
230 var keystr;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
231 if (c.match(/^[a-z]$/)) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
232 if (termemu.ctrlp()) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
233 var n = c.charCodeAt(0) - 96;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
234 keystr = n.toString(16);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
235 if (keystr.length < 2)
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
236 keystr = "0" + keystr;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
237 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
238 else if (termemu.shiftp())
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
239 keystr = c.toUpperCase().charCodeAt(0).toString(16);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
240 else
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
241 keystr = c.charCodeAt(0).toString(16);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
242 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
243 else if (c.match(/^[0-9]$/)) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
244 if (termemu.shiftp())
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
245 keystr = numShifts[c.charCodeAt(0) - 48].toString(16);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
246 else
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
247 keystr = c.charCodeAt(0).toString(16);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
248 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
249 else if (c == '\n')
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
250 keystr = "0a";
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
251 else if (c == '\t')
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
252 keystr = "09";
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
253 else if (c == '\b')
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
254 keystr = "08";
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
255 else if (c == ' ')
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
256 keystr = "20";
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
257 else if (c in charshifts) {
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
258 if (termemu.shiftp())
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
259 keystr = charshifts[c];
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
260 else
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
261 keystr = c.charCodeAt(0).toString(16);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
262 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
263 else
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
264 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
265 //writeData("Sending " + keystr);
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
266 var datareq = new XMLHttpRequest();
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
267 datareq.onreadystatechange = postResponseHandler;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
268 datareq.open('POST', '/feed', true);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
269 datareq.send("keys=" + keystr);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
270 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
271 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
272
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
273 function setup() {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
274 keyHexCodes.init();
9
826a7ced69f8 Make the emulator screen resizable.
John "Elwin" Edwards <elwin@sdf.org>
parents: 7
diff changeset
275 termemu.init("termwrap", 24, 80);
0
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
276 setTitle("Not connected.");
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
277 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
278 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
279
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
280 function toggleshift() {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
281 termemu.toggleshift();
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
282 keydiv = document.getElementById("shiftkey");
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
283 if (termemu.shiftp())
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
284 keydiv.className = "keysel";
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
285 else
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
286 keydiv.className = "key";
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
287 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
288 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
289
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
290 function togglectrl() {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
291 termemu.togglectrl();
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
292 keydiv = document.getElementById("ctrlkey");
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
293 if (termemu.ctrlp())
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
294 keydiv.className = "keysel";
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
295 else
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
296 keydiv.className = "key";
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
297 return;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
298 }
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
299
9
826a7ced69f8 Make the emulator screen resizable.
John "Elwin" Edwards <elwin@sdf.org>
parents: 7
diff changeset
300 function login(h, w) {
0
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
301 if (termemu.alive)
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
302 return;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
303 var req = new XMLHttpRequest();
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
304 req.onreadystatechange = function () {
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
305 if (req.readyState == 4 && req.status == 200) {
10
d051aad3e95f webtty: begin experimenting with JSON protocol.
John "Elwin" Edwards <elwin@sdf.org>
parents: 9
diff changeset
306 var logindict = JSON.parse(req.responseText);
d051aad3e95f webtty: begin experimenting with JSON protocol.
John "Elwin" Edwards <elwin@sdf.org>
parents: 9
diff changeset
307 if (logindict.login) {
0
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
308 /* Success */
10
d051aad3e95f webtty: begin experimenting with JSON protocol.
John "Elwin" Edwards <elwin@sdf.org>
parents: 9
diff changeset
309 termemu.resize(logindict.h, logindict.w);
0
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
310 termemu.alive = true;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
311 setTitle("Logged in");
10
d051aad3e95f webtty: begin experimenting with JSON protocol.
John "Elwin" Edwards <elwin@sdf.org>
parents: 9
diff changeset
312 debug(1, "Logged in with id " + logindict.id);
0
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
313 getData();
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
314 return;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
315 }
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
316 return;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
317 }
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
318 };
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
319 req.open('POST', '/login', true);
9
826a7ced69f8 Make the emulator screen resizable.
John "Elwin" Edwards <elwin@sdf.org>
parents: 7
diff changeset
320 req.send("login=login&h=" + String(h) + "&w=" + String(w));
0
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
321 return;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
322 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
323
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
324 function stop() {
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
325 var req = new XMLHttpRequest();
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
326 req.onreadystatechange = function () {
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
327 if (req.readyState == 4 && req.status == 200) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
328 /* Figure out whether or not it worked. */
11
481dcee353c9 webtty: switch all server responses to JSON.
John "Elwin" Edwards <elwin@sdf.org>
parents: 10
diff changeset
329 /* FIXME the server might respond with output. */
0
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
330 termemu.alive = false;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
331 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
332 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
333 };
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
334 req.open('POST', '/feed', true);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
335 req.send("quit=quit");
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
336 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
337 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
338
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
339 function setTitle(tstr) {
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
340 var titlespan = document.getElementById("ttitle");
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
341 var tnode = document.createTextNode(tstr);
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
342 if (titlespan.childNodes.length == 0)
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
343 titlespan.appendChild(tnode);
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
344 else
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
345 titlespan.replaceChild(tnode, titlespan.childNodes[0]);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
346 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
347 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
348
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
349 function debug(level, msg) {
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
350 if (level < debugSuppress)
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
351 return;
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
352 var msgdiv = document.createElement("div");
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
353 var msgtext = document.createTextNode(msg);
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
354 msgdiv.appendChild(msgtext);
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
355 document.getElementById("debug").appendChild(msgdiv);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
356 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
357 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
358
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
359 /* This should be a termemu method. */
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
360 function textsize(larger) {
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
361 var cssSize = document.getElementById("term").style.fontSize;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
362 if (!cssSize)
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
363 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
364 var match = cssSize.match(/\d*/);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
365 if (!match)
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
366 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
367 var csize = Number(match[0]);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
368 var nsize;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
369 if (larger) {
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John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
370 if (csize >= 48)
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
371 nsize = 48;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
372 else if (csize >= 20)
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
373 nsize = csize + 4;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
374 else if (csize >= 12)
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
375 nsize = csize + 2;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
376 else if (csize >= 8)
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
377 nsize = csize + 1;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
378 else
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
379 nsize = 8;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
380 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
381 else {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
382 if (csize <= 8)
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
383 nsize = 8;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
384 else if (csize <= 12)
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
385 nsize = csize - 1;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
386 else if (csize <= 20)
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
387 nsize = csize - 2;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
388 else if (csize <= 48)
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
389 nsize = csize - 4;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
390 else
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
391 nsize = 48;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
392 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
393 document.getElementById("term").style.fontSize = nsize.toString() + "px";
9
826a7ced69f8 Make the emulator screen resizable.
John "Elwin" Edwards <elwin@sdf.org>
parents: 7
diff changeset
394 termemu.fixsize();
0
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
395 debug(1, "Changing font size to " + nsize.toString());
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
396 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
397 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
398
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
399 function bell(on) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
400 var imgnode = document.getElementById("bell");
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
401 if (on) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
402 imgnode.style.visibility = "visible";
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
403 window.setTimeout(bell, 1500, false);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
404 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
405 else
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
406 imgnode.style.visibility = "hidden";
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
407 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
408 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
409
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
410 function dkey(codestr) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
411 var dstr = "Keystring: ";
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
412 for (var i = 0; i < codestr.length; i += 2) {
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
413 code = Number("0x" + codestr.substr(i, 2));
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
414 if (code < 32 || (code >= 127 && code < 160))
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
415 dstr += "\\x" + code.toString(16);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
416 else
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
417 dstr += String.fromCharCode(code);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
418 }
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
419 debug(1, dstr);
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
420 return;
bd412f63ce0d Put this project under version control, finally.
John "Elwin" Edwards <elwin@sdf.org>
parents:
diff changeset
421 }