| 1 | |
| 2 | <html> |
| 3 | <head> |
| 4 | <meta name="description" content="Pmw - a toolkit for building high-level compound widgets in Python"> |
| 5 | <meta name="content" content="python, megawidget, mega widget, compound widget, gui, tkinter"> |
| 6 | <title>Pmw.EntryField reference manual</title> |
| 7 | </head> |
| 8 | |
| 9 | <body bgcolor="#ffffff" text="#000000" link="#0000ee" |
| 10 | vlink="551a8b" alink="ff0000"> |
| 11 | |
| 12 | <h1 ALIGN="CENTER">Pmw.EntryField</h1> |
| 13 | |
| 14 | <center><IMG SRC=EntryField.gif ALT="" WIDTH=313 HEIGHT=177></center> |
| 15 | <dl> |
| 16 | <dt> <h3>Name</h3></dt><dd> |
| 17 | <p>Pmw.EntryField() - |
| 18 | entry widget with validation |
| 19 | </p> |
| 20 | |
| 21 | |
| 22 | </dd> |
| 23 | <dt> <h3>Inherits</h3></dt><dd> |
| 24 | <a href="MegaWidget.html">Pmw.MegaWidget</a><br> |
| 25 | </dd> |
| 26 | <dt> <h3>Description</h3></dt><dd> |
| 27 | <p> |
| 28 | An entry field contains an entry widget with optional validation of |
| 29 | various kinds. Built-in validation may be used, such as |
| 30 | <strong>integer</strong>, <strong>real</strong>, <strong>time</strong> or <strong>date</strong>, or an external validation |
| 31 | function may be supplied. If valid text is entered, it will be |
| 32 | displayed with the normal background. If invalid text is entered, |
| 33 | it is not displayed and the previously displayed text is restored. |
| 34 | If partially valid text is entered, it will be displayed with a |
| 35 | background color to indicate it is in error. An example of |
| 36 | partially valid <strong>real</strong> text is <strong>'-.'</strong>, which may be the first two |
| 37 | charactes of the valid string <strong>'-.5'</strong>. Some validators, such as |
| 38 | <strong>date</strong>, have a relaxed interpretation of partial validity, which |
| 39 | allows the user flexibility in how they enter the text.</p> |
| 40 | |
| 41 | <p> Validation is performed <em>early</em>, at each keystroke or other event |
| 42 | which modifies the text. However, if partially valid text is |
| 43 | permitted, the validity of the entered text can be checked just |
| 44 | before it is to be used, which is a form of <em>late</em> validation.</p> |
| 45 | |
| 46 | <p> Minimum and maximum values may be specified. Some validators also |
| 47 | accept other specifications, such as date and time formats and |
| 48 | separators.</p> |
| 49 | |
| 50 | <p></p> |
| 51 | |
| 52 | |
| 53 | </dd> |
| 54 | <dt> <h3>Validation function return values</h3></dt><dd> |
| 55 | <p> |
| 56 | Validation is performed by a function which takes as its first |
| 57 | argument the entered text and returns one of three standard |
| 58 | values, indicating whether the text is valid:</p> |
| 59 | |
| 60 | <dl><dt><strong>Pmw.OK</strong></dt><dd>The text is valid.<p></p> |
| 61 | |
| 62 | </dd> |
| 63 | <dt><strong>Pmw.ERROR</strong></dt><dd>The text is invalid and is not acceptable for |
| 64 | display. In this case the entry will be restored to its |
| 65 | previous value.<p></p> |
| 66 | |
| 67 | </dd> |
| 68 | <dt><strong>Pmw.PARTIAL</strong></dt><dd>The text is partially valid and is acceptable |
| 69 | for display. In this case the text will be displayed |
| 70 | using the <strong>errorbackground</strong> color.<p></p> |
| 71 | <p> </p> |
| 72 | |
| 73 | |
| 74 | </dd></dl> |
| 75 | |
| 76 | </dd> |
| 77 | <dt> <h3>Options</h3></dt><dd> |
| 78 | Options for this megawidget and its base |
| 79 | classes are described below.<p></p> |
| 80 | <a name=option.command></a> |
| 81 | <dl><dt> <strong>command |
| 82 | </strong></dt><dd> |
| 83 | This specifies a function to call whenever the <strong><Return></strong> key is |
| 84 | pressed or <code>invoke()</code> is called. The default is <strong>None</strong>.</p> |
| 85 | |
| 86 | |
| 87 | </dd></dl> |
| 88 | <a name=option.errorbackground></a> |
| 89 | <dl><dt> <strong>errorbackground |
| 90 | </strong></dt><dd> |
| 91 | Specifies the background color to use when displaying invalid or |
| 92 | partially valid text. The default is <strong>'pink'</strong>.</p> |
| 93 | |
| 94 | |
| 95 | </dd></dl> |
| 96 | <a name=option.extravalidators></a> |
| 97 | <dl><dt> <strong>extravalidators |
| 98 | </strong></dt><dd> |
| 99 | This is a dictionary of extra validators. The keys are the names |
| 100 | of validators which may be used in a future call to the |
| 101 | <strong>validate</strong> option. Each value in the dictionary is a tuple of |
| 102 | (<em>validate_function</em>, <em>stringtovalue_function</em>).</p> |
| 103 | <p> The <em>validate_function</em> is used to implement the validation and |
| 104 | the <em>stringtovalue_function</em> is used to convert the entry input |
| 105 | into a value which can be compared with the minimum and maximum |
| 106 | limits. These functions are as described for the <strong>validate</strong> |
| 107 | option.</p> |
| 108 | |
| 109 | <p> If either of these is not given as a function, it is assumed to be |
| 110 | the name of one of the other extra validators or one of the |
| 111 | standard validators. The alias search is performed when the |
| 112 | <strong>validate</strong> option is configured, not when the <strong>extravalidators</strong> |
| 113 | option is configured or when the <strong>validate</strong> function is called.</p> |
| 114 | |
| 115 | <p> If the name of one of the extra validators is the same as one of |
| 116 | the standard validators, the extra validator takes precedence. The default is <strong>{}</strong>.</p> |
| 117 | |
| 118 | |
| 119 | |
| 120 | </dd></dl> |
| 121 | <a name=option.invalidcommand></a> |
| 122 | <dl><dt> <strong>invalidcommand |
| 123 | </strong></dt><dd> |
| 124 | This is executed when invalid text is entered and the text is |
| 125 | restored to its previous value (that is, when the <strong>validate</strong> |
| 126 | function returns <strong>Pmw.ERROR</strong>). It is also called if an attempt is |
| 127 | made to set invalid text in a call to <code>setentry()</code>. The default |
| 128 | is <strong>self.bell</strong>.</p> |
| 129 | |
| 130 | |
| 131 | </dd></dl> |
| 132 | <a name=option.labelmargin></a> |
| 133 | <dl><dt> <strong>labelmargin |
| 134 | </strong></dt><dd> |
| 135 | Initialisation option. If the <strong>labelpos</strong> option is not <strong>None</strong>, this specifies the |
| 136 | distance between the <strong>label</strong> component and the rest of the |
| 137 | megawidget. The default is <strong>0</strong>.</p> |
| 138 | |
| 139 | |
| 140 | </dd></dl> |
| 141 | <a name=option.labelpos></a> |
| 142 | <dl><dt> <strong>labelpos |
| 143 | </strong></dt><dd> |
| 144 | Initialisation option. Specifies where to place the <strong>label</strong> component. If not |
| 145 | <strong>None</strong>, it should be a concatenation of one or two of the |
| 146 | letters <strong>'n'</strong>, <strong>'s'</strong>, <strong>'e'</strong> and <strong>'w'</strong>. The first letter |
| 147 | specifies on which side of the megawidget to place the label. |
| 148 | If a second letter is specified, it indicates where on that |
| 149 | side to place the label. For example, if <strong>labelpos</strong> is <strong>'w'</strong>, |
| 150 | the label is placed in the center of the left hand side; if |
| 151 | it is <strong>'wn'</strong>, the label is placed at the top of the left |
| 152 | hand side; if it is <strong>'ws'</strong>, the label is placed at the |
| 153 | bottom of the left hand side.</p> |
| 154 | <p> If <strong>None</strong>, a label component is not created. The default is <strong>None</strong>.</p> |
| 155 | |
| 156 | |
| 157 | |
| 158 | </dd></dl> |
| 159 | <a name=option.modifiedcommand></a> |
| 160 | <dl><dt> <strong>modifiedcommand |
| 161 | </strong></dt><dd> |
| 162 | This is called whenever the text of the entry has been changed |
| 163 | due to user action or by a call to <code>setentry()</code>. The default is <strong>None</strong>.</p> |
| 164 | |
| 165 | |
| 166 | </dd></dl> |
| 167 | <a name=option.sticky></a> |
| 168 | <dl><dt> <strong>sticky |
| 169 | </strong></dt><dd> |
| 170 | Initialisation option. The default is <strong>'ew'</strong>.</p> |
| 171 | |
| 172 | |
| 173 | </dd></dl> |
| 174 | <a name=option.validate></a> |
| 175 | <dl><dt> <strong>validate |
| 176 | </strong></dt><dd> |
| 177 | Specifies what kind of validation should be performed on the entry |
| 178 | input text.</p> |
| 179 | <p> The most general way to specify the <strong>validate</strong> option is as a |
| 180 | dictionary. The kind of validation is specified by the |
| 181 | <strong>'validator'</strong> dictionary field, which may be the name of one of |
| 182 | the standard validators described below, the name of a validator |
| 183 | supplied by the <strong>extravalidators</strong> option, a function or <strong>None</strong>. |
| 184 | The default is <strong>None</strong>.</p> |
| 185 | |
| 186 | <p> Any other dictionary fields specify other restrictions on the |
| 187 | entered values. For all validators, the following fields may be |
| 188 | specified:</p> |
| 189 | |
| 190 | <dl><dt><strong>'min'</strong></dt><dd>Specifies the minimum acceptable value, or <strong>None</strong> if no |
| 191 | minimum checking should be performed. The default is <strong>None</strong>.<p></p> |
| 192 | |
| 193 | </dd> |
| 194 | <dt><strong>'max'</strong></dt><dd>Specifies the maximum acceptable value, or <strong>None</strong> if no |
| 195 | maximum checking should be performed. The default is <strong>None</strong>.<p></p> |
| 196 | |
| 197 | </dd> |
| 198 | <dt><strong>'minstrict'</strong></dt><dd>If true, then minimum checking is strictly enforced. |
| 199 | Otherwise, the entry input may be less than <strong>min</strong>, but will be |
| 200 | displayed using the <strong>errorbackground</strong> color. The default is true.<p></p> |
| 201 | |
| 202 | </dd> |
| 203 | <dt><strong>'maxstrict'</strong></dt><dd>If true, then maximum checking is strictly enforced. |
| 204 | Otherwise, the entry input may be more than <strong>max</strong>, but will be |
| 205 | displayed using the <strong>errorbackground</strong> color. The default is true.<p></p> |
| 206 | |
| 207 | </dd></dl> |
| 208 | <p> If the dictionary contains a <strong>'stringtovalue'</strong> field, it overrides |
| 209 | the normal <em>stringtovalue</em> function for the validator. The |
| 210 | <em>stringtovalue</em> function is described below.</p> |
| 211 | |
| 212 | <p> Other fields in the dictionary (apart from the core fields |
| 213 | mentioned above) are passed on to the <em>validator</em> and |
| 214 | <em>stringtovalue</em> functions as keyword arguments.</p> |
| 215 | |
| 216 | <p> If <strong>validate</strong> is not a dictionary, then it is equivalent to |
| 217 | specifying it as a dictionary with a single <strong>'validator'</strong> field. |
| 218 | For example, <code>validate = 'real'</code> is equivalent to /validate = |
| 219 | {'validator' : 'real'}/ and specifies real numbers without any |
| 220 | minimum or maximum limits and using <strong>'.'</strong> as the decimal point |
| 221 | character.</p> |
| 222 | |
| 223 | <p> The standard validators accepted in the <strong>'validator'</strong> field are:</p> |
| 224 | |
| 225 | <dl><dt><strong>'numeric'</strong></dt><dd>An integer greater than or equal to 0. Digits |
| 226 | only. No sign.<p></p> |
| 227 | |
| 228 | </dd> |
| 229 | <dt><strong>'integer'</strong></dt><dd>Any integer (negative, 0 or positive) as accepted |
| 230 | by <code>string.atol()</code>.<p></p> |
| 231 | |
| 232 | </dd> |
| 233 | <dt><strong>'hexadecimal'</strong></dt><dd>Hex number (with optional leading <strong>'0x'</strong>), as accepted |
| 234 | by <code>string.atol(text, 16)</code>.<p></p> |
| 235 | |
| 236 | </dd> |
| 237 | <dt><strong>'real'</strong></dt><dd>A number, with or without a decimal point and optional |
| 238 | exponent (e or E), as accepted by <code>string.atof()</code>. This |
| 239 | validator accepts a <strong>'separator'</strong> argument, which specifies |
| 240 | the character used to represent the decimal point. The |
| 241 | default <strong>'separator'</strong> is <strong>'.'</strong>.<p></p> |
| 242 | |
| 243 | </dd> |
| 244 | <dt><strong>'alphabetic'</strong></dt><dd>Consisting of the letters <strong>'a-z'</strong> and <strong>'A-Z'</strong>. |
| 245 | In this case, <strong>'min'</strong> and <strong>'max'</strong> specify limits on the length |
| 246 | of the text.<p></p> |
| 247 | |
| 248 | </dd> |
| 249 | <dt><strong>'alphanumeric'</strong></dt><dd>Consisting of the letters <strong>'a-z'</strong>, <strong>'A-Z'</strong> and <strong>'0-9'</strong>. |
| 250 | In this case, <strong>'min'</strong> and <strong>'max'</strong> specify limits on the length |
| 251 | of the text.<p></p> |
| 252 | |
| 253 | </dd> |
| 254 | <dt><strong>'time'</strong></dt><dd>Hours, minutes and seconds, in the format |
| 255 | <strong>'HH:MM:SS'</strong>, as accepted by <code>Pmw.timestringtoseconds()</code>. |
| 256 | This validator accepts a <strong>'separator'</strong> argument, which |
| 257 | specifies the character used to separate the three fields. |
| 258 | The default separator is <strong>':'</strong>. The time may be negative.<p></p> |
| 259 | |
| 260 | </dd> |
| 261 | <dt><strong>'date'</strong></dt><dd>Day, month and year, as accepted by |
| 262 | <code>Pmw.datestringtojdn()</code>. This validator accepts a |
| 263 | <strong>'separator'</strong> argument, which specifies the character used to |
| 264 | separate the three fields. The default is <strong>':'</strong>. This |
| 265 | validator also accepts a <strong>'format'</strong> argument, which is passed to |
| 266 | <code>Pmw.datestringtojdn()</code> to specify the desired ordering of the |
| 267 | fields. The default is <strong>'ymd'</strong>.<p></p> |
| 268 | |
| 269 | </dd></dl> |
| 270 | <p> If <strong>'validator'</strong> is a function, then it will be called whenever |
| 271 | the contents of the entry may have changed due to user action or |
| 272 | by a call to <code>setentry()</code>. The function is called with at least |
| 273 | one argument, the first one being the new text as modified by the |
| 274 | user or <code>setentry()</code>. The other arguments are keyword arguments |
| 275 | made up of the non-core fields of the <strong>validate</strong> dictionary.</p> |
| 276 | |
| 277 | <p> The <em>validator</em> function should return <strong>Pmw.OK</strong>, <strong>Pmw.ERROR</strong> or |
| 278 | <strong>Pmw.PARTIAL</strong> as described above. It should not perform minimum |
| 279 | and maximum checking. This is done after the call, if it returns |
| 280 | <strong>Pmw.OK</strong>.</p> |
| 281 | |
| 282 | <p> The <strong>'stringtovalue'</strong> field in the dictionary may be specified as |
| 283 | the name of one of the standard validators, the name of a |
| 284 | validator supplied by the <strong>extravalidators</strong> option, a function or |
| 285 | <strong>None</strong>.</p> |
| 286 | |
| 287 | <p> The <em>stringtovalue</em> function is used to convert the entry input |
| 288 | into a value which can then be compared with any minimum or |
| 289 | maximum values specified for the validator. If the <strong>'min'</strong> or |
| 290 | <strong>'max'</strong> fields are specified as strings, they are converted using |
| 291 | the <em>stringtovalue</em> function. The <em>stringtovalue</em> function is |
| 292 | called with the same arguments as the <em>validator</em> function. The |
| 293 | <em>stringtovalue</em> function for the standard number validators |
| 294 | convert the string to a number. Those for the standard alpha |
| 295 | validators return the length of the string. Those for the |
| 296 | standard <strong>'time'</strong> and <strong>'date'</strong> validators return the number of |
| 297 | seconds and the Julian Day Number, respectively. See |
| 298 | <code>Pmw.stringtoreal()</code>, <code>Pmw.timestringtoseconds()</code> and |
| 299 | <code>Pmw.datestringtojdn()</code>.</p> |
| 300 | |
| 301 | <p> If the validator has been specified as a function and no |
| 302 | <strong>'stringtovalue'</strong> field is given, then it defaults to the standard |
| 303 | python <code>len()</code> function.</p> |
| 304 | |
| 305 | <p> If <strong>'validator'</strong> is <strong>None</strong>, no validation is performed. However, |
| 306 | minimum and maximum checking may be performed, according to the |
| 307 | <em>stringtovalue</em> function. For example, to limit the entry text to |
| 308 | a maximum of five characters:</p> |
| 309 | |
| 310 | <dl><dd><pre> Pmw.EntryField(validate = {'max' : 5})</pre></dd></dl> |
| 311 | |
| 312 | <p> The validator functions for each of the standard validators can |
| 313 | be accessed as:</p> |
| 314 | <dl><dd><pre> Pmw.numericvalidator |
| 315 | Pmw.integervalidator |
| 316 | Pmw.hexadecimalvalidator |
| 317 | Pmw.realvalidator |
| 318 | Pmw.alphabeticvalidator |
| 319 | Pmw.alphanumericvalidator |
| 320 | Pmw.timevalidator |
| 321 | Pmw.datevalidator</pre></dd></dl> |
| 322 | |
| 323 | |
| 324 | <p> Whenever the <strong>validate</strong> option is configured, the text currently |
| 325 | displayed in the entry widget is revalidated. If it is not valid, |
| 326 | the <strong>errorbackground</strong> color is set and the <strong>invalidcommand</strong> |
| 327 | function is called. However, the displayed text is not modified.</p> |
| 328 | |
| 329 | <p> The default for <strong>validate</strong> is <strong>None</strong>.</p> |
| 330 | |
| 331 | |
| 332 | |
| 333 | </dd></dl> |
| 334 | <a name=option.value></a> |
| 335 | <dl><dt> <strong>value |
| 336 | </strong></dt><dd> |
| 337 | Initialisation option. Specifies the initial contents of the entry. |
| 338 | If this text is invalid, it will be displayed with the |
| 339 | <strong>errorbackground</strong> color and the <strong>invalidcommand</strong> function will be called. |
| 340 | If both <strong>value</strong> and <strong>entry_textvariable</strong> options are specified in |
| 341 | the constructor, <strong>value</strong> will take precedence. The default is <strong>''</strong>.</p> |
| 342 | |
| 343 | |
| 344 | </dd></dl> |
| 345 | </dd> |
| 346 | <dt> <h3>Components</h3></dt><dd> |
| 347 | Components created by this megawidget and its base |
| 348 | classes are described below.<p></p> |
| 349 | <a name=component.entry></a> |
| 350 | <dl><dt> <strong>entry |
| 351 | </strong></dt><dd> |
| 352 | The widget where the user may enter text. Long text may be |
| 353 | scrolled horizontally by dragging with the middle mouse button. By default, this component is a Tkinter.Entry.</p> |
| 354 | |
| 355 | |
| 356 | </dd></dl> |
| 357 | <a name=component.hull></a> |
| 358 | <dl><dt> <strong>hull |
| 359 | </strong></dt><dd> |
| 360 | This acts as the body for the entire megawidget. Other components |
| 361 | are created as children of the hull to further specialise this |
| 362 | class. By default, this component is a Tkinter.Frame.</p> |
| 363 | |
| 364 | |
| 365 | </dd></dl> |
| 366 | <a name=component.label></a> |
| 367 | <dl><dt> <strong>label |
| 368 | </strong></dt><dd> |
| 369 | If the <strong>labelpos</strong> option is not <strong>None</strong>, this component is |
| 370 | created as a text label for the megawidget. See the |
| 371 | <strong>labelpos</strong> option for details. Note that to set, for example, |
| 372 | the <strong>text</strong> option of the label, you need to use the <strong>label_text</strong> |
| 373 | component option. By default, this component is a Tkinter.Label.</p> |
| 374 | |
| 375 | |
| 376 | </dd></dl> |
| 377 | </dd> |
| 378 | <a name=methods></a> |
| 379 | <dt> <h3>Methods</h3></dt><dd> |
| 380 | Only methods specific to this megawidget are described below. |
| 381 | For a description of its inherited methods, see the |
| 382 | manual for its base class |
| 383 | <strong><a href="MegaWidget.html#methods">Pmw.MegaWidget</a></strong>. |
| 384 | In addition, methods from the |
| 385 | <strong>Tkinter.Entry</strong> class |
| 386 | are forwarded by this megawidget to the |
| 387 | <strong>entry</strong> component. |
| 388 | <p></p> |
| 389 | <a name=method.checkentry></a> |
| 390 | <dl><dt> <strong>checkentry</strong>()</dt><dd> |
| 391 | Check the validity of the current contents of the entry widget |
| 392 | and return the result. |
| 393 | If the text is not valid, set the background to <strong>errorbackground</strong> and |
| 394 | call the <strong>invalidcommand</strong> function. If there is a variable |
| 395 | specified by the <strong>entry_textvariable</strong> option, this method should be |
| 396 | called after the <code>set()</code> method of the variable is called. If this |
| 397 | is not done in this case, the entry widget background will not be |
| 398 | set correctly.</p> |
| 399 | |
| 400 | |
| 401 | </dd></dl> |
| 402 | <a name=method.clear></a> |
| 403 | <dl><dt> <strong>clear</strong>()</dt><dd> |
| 404 | Remove all text from the entry widget. Equivalent to <code>setentry('')</code>.</p> |
| 405 | |
| 406 | |
| 407 | </dd></dl> |
| 408 | <a name=method.getvalue></a> |
| 409 | <dl><dt> <strong>getvalue</strong>()</dt><dd> |
| 410 | Return the text displayed by the entry.</p> |
| 411 | |
| 412 | |
| 413 | </dd></dl> |
| 414 | <a name=method.invoke></a> |
| 415 | <dl><dt> <strong>invoke</strong>()</dt><dd> |
| 416 | Invoke the command specified by the <strong>command</strong> option as if the |
| 417 | <strong><Return></strong> key had been pressed and return the result.</p> |
| 418 | |
| 419 | |
| 420 | </dd></dl> |
| 421 | <a name=method.setentry></a> |
| 422 | <dl><dt> <strong>setentry</strong>(<em>text</em>)</dt><dd> |
| 423 | Same as <code>setvalue()</code> method.</p> |
| 424 | |
| 425 | |
| 426 | </dd></dl> |
| 427 | <a name=method.setvalue></a> |
| 428 | <dl><dt> <strong>setvalue</strong>(<em>text</em>)</dt><dd> |
| 429 | Set the contents of the entry widget to <em>text</em> and carry out |
| 430 | validation as if the text had been entered by the user. If the |
| 431 | text is invalid, the entry widget will not be changed and the |
| 432 | <strong>invalidcommand</strong> function will be called. Return the validity |
| 433 | of <em>text</em>.</p> |
| 434 | |
| 435 | |
| 436 | </dd></dl> |
| 437 | <a name=method.valid></a> |
| 438 | <dl><dt> <strong>valid</strong>()</dt><dd> |
| 439 | Return true if the contents of the entry widget are valid.</p> |
| 440 | |
| 441 | |
| 442 | </dd></dl> |
| 443 | </dd> |
| 444 | <dt> <h3>Example</h3></dt><dd> |
| 445 | The image at the top of this manual is a snapshot |
| 446 | of the window (or part of the window) produced |
| 447 | by the following code.<p></p> |
| 448 | <pre> |
| 449 | class Demo: |
| 450 | def __init__(self, parent): |
| 451 | # Create and pack the EntryFields. |
| 452 | self._any = Pmw.EntryField(parent, |
| 453 | labelpos = 'w', |
| 454 | label_text = 'Any:', |
| 455 | validate = None, |
| 456 | command = self.execute) |
| 457 | self._real = Pmw.EntryField(parent, |
| 458 | labelpos = 'w', |
| 459 | value = '55.5', |
| 460 | label_text = 'Real (10.0 to 99.0):', |
| 461 | validate = {'validator' : 'real', |
| 462 | 'min' : 10, 'max' : 99, 'minstrict' : 0}, |
| 463 | modifiedcommand = self.changed) |
| 464 | self._odd = Pmw.EntryField(parent, |
| 465 | labelpos = 'w', |
| 466 | label_text = 'Odd length:', |
| 467 | validate = self.custom_validate, |
| 468 | value = 'ABC') |
| 469 | self._date = Pmw.EntryField(parent, |
| 470 | labelpos = 'w', |
| 471 | label_text = 'Date (in 2000):', |
| 472 | value = '2000/2/29', |
| 473 | validate = {'validator' : 'date', |
| 474 | 'min' : '2000/1/1', 'max' : '2000/12/31', |
| 475 | 'minstrict' : 0, 'maxstrict' : 0, |
| 476 | 'format' : 'ymd'}, |
| 477 | ) |
| 478 | now = time.localtime(time.time()) |
| 479 | self._date2 = Pmw.EntryField(parent, |
| 480 | labelpos = 'w', |
| 481 | label_text = 'Date (d.m.y):', |
| 482 | value = '%d.%d.%d' % (now[2], now[1], now[0]), |
| 483 | validate = {'validator' : 'date', |
| 484 | 'format' : 'dmy', 'separator' : '.'}, |
| 485 | ) |
| 486 | self._time = Pmw.EntryField(parent, |
| 487 | labelpos = 'w', |
| 488 | label_text = 'Time (24hr clock):', |
| 489 | value = '8:00:00', |
| 490 | validate = {'validator' : 'time', |
| 491 | 'min' : '00:00:00', 'max' : '23:59:59', |
| 492 | 'minstrict' : 0, 'maxstrict' : 0}, |
| 493 | ) |
| 494 | self._comma = Pmw.EntryField(parent, |
| 495 | labelpos = 'w', |
| 496 | label_text = 'Real (with comma):', |
| 497 | value = '123,456', |
| 498 | validate = {'validator' : 'real', 'separator' : ','}, |
| 499 | ) |
| 500 | |
| 501 | entries = (self._any, self._real, self._odd, self._date, self._date2, |
| 502 | self._time, self._comma) |
| 503 | |
| 504 | for entry in entries: |
| 505 | entry.pack(fill='x', expand=1, padx=10, pady=5) |
| 506 | Pmw.alignlabels(entries) |
| 507 | |
| 508 | self._any.component('entry').focus_set() |
| 509 | |
| 510 | def changed(self): |
| 511 | print 'Text changed, value is', self._real.getvalue() |
| 512 | |
| 513 | def execute(self): |
| 514 | print 'Return pressed, value is', self._any.getvalue() |
| 515 | |
| 516 | # This implements a custom validation routine. It simply checks |
| 517 | # if the string is of odd length. |
| 518 | def custom_validate(self, text): |
| 519 | print 'text:', text |
| 520 | if len(text) % 2 == 0: |
| 521 | return -1 |
| 522 | else: |
| 523 | return 1 |
| 524 | |
| 525 | </pre> |
| 526 | </dd> |
| 527 | </dl> |
| 528 | |
| 529 | <center><P ALIGN="CENTER"> |
| 530 | <IMG SRC = blue_line.gif ALT = "" WIDTH=320 HEIGHT=5> |
| 531 | </p></center> |
| 532 | |
| 533 | |
| 534 | <font size=-1> |
| 535 | <center><P ALIGN="CENTER"> |
| 536 | Pmw 1.2 - |
| 537 | 5 Aug 2003 |
| 538 | - <a href="index.html">Home</a> |
| 539 | <br>Manual page last reviewed: 22 May 1998 |
| 540 | </p></center> |
| 541 | </font> |
| 542 | |
| 543 | </body> |
| 544 | </html> |
| 545 | |