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authorhut <hut@lavabit.com>2009-12-25 21:55:36 +0100
committerhut <hut@lavabit.com>2009-12-25 21:55:36 +0100
commit94cb60a6bde75a385c6ad9afbae2c8e738fdc0a0 (patch)
tree288798cbc6ecd594c3928fcba8625dd00c3881d3 /doc/pydoc/ranger.gui.widgets.html
parentf07bb12fc5c59430e995a64956b36331ce3629b9 (diff)
downloadranger-94cb60a6bde75a385c6ad9afbae2c8e738fdc0a0.tar.gz
moved pydoc pages to doc/pydoc
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+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
+<html><head><title>Python: package ranger.gui.widgets</title>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+</head><body bgcolor="#f0f0f8">
+
+<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="heading">
+<tr bgcolor="#7799ee">
+<td valign=bottom>&nbsp;<br>
+<font color="#ffffff" face="helvetica, arial">&nbsp;<br><big><big><strong><a href="ranger.html"><font color="#ffffff">ranger</font></a>.<a href="ranger.gui.html"><font color="#ffffff">gui</font></a>.widgets</strong></big></big></font></td
+><td align=right valign=bottom
+><font color="#ffffff" face="helvetica, arial"><a href=".">index</a><br><a href="file:/home/hut/work/ranger/ranger/gui/widgets/__init__.py">/home/hut/work/ranger/ranger/gui/widgets/__init__.py</a></font></td></tr></table>
+    <p></p>
+<p>
+<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
+<tr bgcolor="#aa55cc">
+<td colspan=3 valign=bottom>&nbsp;<br>
+<font color="#ffffff" face="helvetica, arial"><big><strong>Package Contents</strong></big></font></td></tr>
+    
+<tr><td bgcolor="#aa55cc"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
+<td width="100%"><table width="100%" summary="list"><tr><td width="25%" valign=top><a href="ranger.gui.widgets.console.html">console</a><br>
+<a href="ranger.gui.widgets.filelist.html">filelist</a><br>
+</td><td width="25%" valign=top><a href="ranger.gui.widgets.filelistcontainer.html">filelistcontainer</a><br>
+<a href="ranger.gui.widgets.notify.html">notify</a><br>
+</td><td width="25%" valign=top><a href="ranger.gui.widgets.process_manager.html">process_manager</a><br>
+<a href="ranger.gui.widgets.statusbar.html">statusbar</a><br>
+</td><td width="25%" valign=top><a href="ranger.gui.widgets.titlebar.html">titlebar</a><br>
+</td></tr></table></td></tr></table><p>
+<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
+<tr bgcolor="#ee77aa">
+<td colspan=3 valign=bottom>&nbsp;<br>
+<font color="#ffffff" face="helvetica, arial"><big><strong>Classes</strong></big></font></td></tr>
+    
+<tr><td bgcolor="#ee77aa"><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td>&nbsp;</td>
+<td width="100%"><dl>
+<dt><font face="helvetica, arial"><a href="ranger.gui.displayable.html#Displayable">ranger.gui.displayable.Displayable</a>(<a href="ranger.shared.html#EnvironmentAware">ranger.shared.EnvironmentAware</a>, <a href="ranger.shared.html#FileManagerAware">ranger.shared.FileManagerAware</a>, <a href="ranger.shared.settings.html#SettingsAware">ranger.shared.settings.SettingsAware</a>)
+</font></dt><dd>
+<dl>
+<dt><font face="helvetica, arial"><a href="ranger.gui.widgets.html#Widget">Widget</a>
+</font></dt></dl>
+</dd>
+</dl>
+ <p>
+<table width="100%" cellspacing=0 cellpadding=2 border=0 summary="section">
+<tr bgcolor="#ffc8d8">
+<td colspan=3 valign=bottom>&nbsp;<br>
+<font color="#000000" face="helvetica, arial"><a name="Widget">class <strong>Widget</strong></a>(<a href="ranger.gui.displayable.html#Displayable">ranger.gui.displayable.Displayable</a>)</font></td></tr>
+    
+<tr bgcolor="#ffc8d8"><td rowspan=2><tt>&nbsp;&nbsp;&nbsp;</tt></td>
+<td colspan=2><tt>The&nbsp;<a href="#Widget">Widget</a>&nbsp;class&nbsp;defines&nbsp;no&nbsp;methods&nbsp;and&nbsp;only&nbsp;exists&nbsp;for<br>
+classification&nbsp;of&nbsp;widgets.<br>&nbsp;</tt></td></tr>
+<tr><td>&nbsp;</td>
+<td width="100%"><dl><dt>Method resolution order:</dt>
+<dd><a href="ranger.gui.widgets.html#Widget">Widget</a></dd>
+<dd><a href="ranger.gui.displayable.html#Displayable">ranger.gui.displayable.Displayable</a></dd>
+<dd><a href="ranger.shared.html#EnvironmentAware">ranger.shared.EnvironmentAware</a></dd>
+<dd><a href="ranger.shared.html#FileManagerAware">ranger.shared.FileManagerAware</a></dd>
+<dd><a href="ranger.shared.html#Awareness">ranger.shared.Awareness</a></dd>
+<dd><a href="ranger.shared.settings.html#SettingsAware">ranger.shared.settings.SettingsAware</a></dd>
+<dd><a href="builtins.html#object">builtins.object</a></dd>
+</dl>
+<hr>
+Methods inherited from <a href="ranger.gui.displayable.html#Displayable">ranger.gui.displayable.Displayable</a>:<br>
+<dl><dt><a name="Widget-__contains__"><strong>__contains__</strong></a>(self, item)</dt><dd><tt>Is&nbsp;item&nbsp;inside&nbsp;the&nbsp;boundaries?<br>
+item&nbsp;can&nbsp;be&nbsp;an&nbsp;iterable&nbsp;like&nbsp;[y,&nbsp;x]&nbsp;or&nbsp;an&nbsp;object&nbsp;with&nbsp;x&nbsp;and&nbsp;y&nbsp;methods.</tt></dd></dl>
+
+<dl><dt><a name="Widget-__init__"><strong>__init__</strong></a>(self, win, env<font color="#909090">=None</font>, fm<font color="#909090">=None</font>, settings<font color="#909090">=None</font>)</dt></dl>
+
+<dl><dt><a name="Widget-__nonzero__"><strong>__nonzero__</strong></a>(self)</dt><dd><tt>Always&nbsp;True</tt></dd></dl>
+
+<dl><dt><a name="Widget-click"><strong>click</strong></a>(self, event)</dt><dd><tt>Called&nbsp;when&nbsp;a&nbsp;mouse&nbsp;key&nbsp;is&nbsp;pressed&nbsp;and&nbsp;self.<strong>focused</strong>&nbsp;is&nbsp;True.<br>
+Override&nbsp;this!</tt></dd></dl>
+
+<dl><dt><a name="Widget-color"><strong>color</strong></a>(self, keylist<font color="#909090">=None</font>, *keys)</dt><dd><tt>Change&nbsp;the&nbsp;colors&nbsp;from&nbsp;now&nbsp;on.</tt></dd></dl>
+
+<dl><dt><a name="Widget-color_at"><strong>color_at</strong></a>(self, y, x, wid, keylist<font color="#909090">=None</font>, *keys)</dt><dd><tt>Change&nbsp;the&nbsp;colors&nbsp;at&nbsp;the&nbsp;specified&nbsp;position</tt></dd></dl>
+
+<dl><dt><a name="Widget-color_reset"><strong>color_reset</strong></a>(self)</dt><dd><tt>Change&nbsp;the&nbsp;colors&nbsp;to&nbsp;the&nbsp;default&nbsp;colors</tt></dd></dl>
+
+<dl><dt><a name="Widget-contains_point"><strong>contains_point</strong></a>(self, y, x)</dt><dd><tt>Test&nbsp;if&nbsp;the&nbsp;point&nbsp;lies&nbsp;within&nbsp;the&nbsp;boundaries&nbsp;of&nbsp;this&nbsp;object</tt></dd></dl>
+
+<dl><dt><a name="Widget-destroy"><strong>destroy</strong></a>(self)</dt><dd><tt>Called&nbsp;when&nbsp;the&nbsp;object&nbsp;is&nbsp;destroyed.<br>
+Override&nbsp;this!</tt></dd></dl>
+
+<dl><dt><a name="Widget-draw"><strong>draw</strong></a>(self)</dt><dd><tt>Draw&nbsp;displayable.&nbsp;&nbsp;Called&nbsp;on&nbsp;every&nbsp;main&nbsp;iteration&nbsp;if&nbsp;the&nbsp;object<br>
+is&nbsp;visible.&nbsp;&nbsp;Override&nbsp;this!</tt></dd></dl>
+
+<dl><dt><a name="Widget-finalize"><strong>finalize</strong></a>(self)</dt><dd><tt>Called&nbsp;after&nbsp;every&nbsp;displayable&nbsp;is&nbsp;done&nbsp;drawing.<br>
+Override&nbsp;this!</tt></dd></dl>
+
+<dl><dt><a name="Widget-poke"><strong>poke</strong></a>(self)</dt><dd><tt>Called&nbsp;before&nbsp;drawing,&nbsp;even&nbsp;if&nbsp;invisible</tt></dd></dl>
+
+<dl><dt><a name="Widget-press"><strong>press</strong></a>(self, key)</dt><dd><tt>Called&nbsp;when&nbsp;a&nbsp;key&nbsp;is&nbsp;pressed&nbsp;and&nbsp;self.<strong>focused</strong>&nbsp;is&nbsp;True.<br>
+Override&nbsp;this!</tt></dd></dl>
+
+<dl><dt><a name="Widget-resize"><strong>resize</strong></a>(self, y, x, hei<font color="#909090">=None</font>, wid<font color="#909090">=None</font>)</dt><dd><tt>Resize&nbsp;the&nbsp;widget</tt></dd></dl>
+
+<hr>
+Data and other attributes inherited from <a href="ranger.gui.displayable.html#Displayable">ranger.gui.displayable.Displayable</a>:<br>
+<dl><dt><strong>colorscheme</strong> = None</dl>
+
+<dl><dt><strong>focused</strong> = False</dl>
+
+<dl><dt><strong>visible</strong> = True</dl>
+
+<dl><dt><strong>win</strong> = None</dl>
+
+<hr>
+Data and other attributes inherited from <a href="ranger.shared.html#EnvironmentAware">ranger.shared.EnvironmentAware</a>:<br>
+<dl><dt><strong>env</strong> = None</dl>
+
+<hr>
+Data and other attributes inherited from <a href="ranger.shared.html#FileManagerAware">ranger.shared.FileManagerAware</a>:<br>
+<dl><dt><strong>fm</strong> = None</dl>
+
+<hr>
+Data descriptors inherited from <a href="ranger.shared.html#Awareness">ranger.shared.Awareness</a>:<br>
+<dl><dt><strong>__dict__</strong></dt>
+<dd><tt>dictionary&nbsp;for&nbsp;instance&nbsp;variables&nbsp;(if&nbsp;defined)</tt></dd>
+</dl>
+<dl><dt><strong>__weakref__</strong></dt>
+<dd><tt>list&nbsp;of&nbsp;weak&nbsp;references&nbsp;to&nbsp;the&nbsp;object&nbsp;(if&nbsp;defined)</tt></dd>
+</dl>
+<hr>
+Data and other attributes inherited from <a href="ranger.shared.settings.html#SettingsAware">ranger.shared.settings.SettingsAware</a>:<br>
+<dl><dt><strong>settings</strong> = &lt;ranger.ext.openstruct.OpenStruct object at 0x154e450&gt;</dl>
+
+</td></tr></table></td></tr></table>
+</body></html>
\ No newline at end of file
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//: Phase 1 of running mu code: load it from a textual representation.

:(scenarios load)  // use 'load' instead of 'run' in all scenarios in this layer
:(scenario first_recipe)
recipe main [
  1:number <- copy 23
]
+parse: instruction: copy
+parse:   ingredient: {"23": "literal"}
+parse:   product: {"1": "number"}

:(code)
vector<recipe_ordinal> load(string form) {
  istringstream in(form);
  in >> std::noskipws;
  return load(in);
}

vector<recipe_ordinal> load(istream& in) {
  in >> std::noskipws;
  vector<recipe_ordinal> result;
  while (has_data(in)) {
    skip_whitespace_and_comments(in);
    if (!has_data(in)) break;
    string command = next_word(in);
    // Command Handlers
    if (command == "recipe") {
      result.push_back(slurp_recipe(in));
    }
    else if (command == "recipe!") {
      Disable_redefine_warnings = true;
      result.push_back(slurp_recipe(in));
      Disable_redefine_warnings = false;
    }
    // End Command Handlers
    else {
      raise_error << "unknown top-level command: " << command << '\n' << end();
    }
  }
  return result;
}

long long int slurp_recipe(istream& in) {
  recipe result;
  result.name = next_word(in);
  // End Load Recipe Name
  skip_whitespace_but_not_newline(in);
  // End Recipe Refinements
  if (result.name.empty())
    raise_error << "empty result.name\n" << end();
  trace(9991, "parse") << "--- defining " << result.name << end();
  if (!contains_key(Recipe_ordinal, result.name)) {
    put(Recipe_ordinal, result.name, Next_recipe_ordinal++);
  }
  if (Recipe.find(get(Recipe_ordinal, result.name)) != Recipe.end()) {
    trace(9991, "parse") << "already exists" << end();
    if (warn_on_redefine(result.name))
      raise << "redefining recipe " << result.name << "\n" << end();
    Recipe.erase(get(Recipe_ordinal, result.name));
  }
  slurp_body(in, result);
  // End Recipe Body(result)
  put(Recipe, get(Recipe_ordinal, result.name), result);
  // track added recipes because we may need to undo them in tests; see below
  Recently_added_recipes.push_back(get(Recipe_ordinal, result.name));
  return get(Recipe_ordinal, result.name);
}

void slurp_body(istream& in, recipe& result) {
  in >> std::noskipws;
  skip_whitespace_but_not_newline(in);
  if (in.get() != '[')
    raise_error << "recipe body must begin with '['\n" << end();
  skip_whitespace_and_comments(in);  // permit trailing comment after '['
  instruction curr;
  while (next_instruction(in, &curr)) {
    // End Rewrite Instruction(curr, recipe result)
    trace(9992, "load") << "after rewriting: " << curr.to_string() << end();
    if (!curr.is_clear()) {
      curr.original_string = curr.to_string();
      result.steps.push_back(curr);
    }
  }
}

bool next_instruction(istream& in, instruction* curr) {
  curr->clear();
  skip_whitespace_and_comments(in);
  if (!has_data(in)) {
    raise_error << "0: unbalanced '[' for recipe\n" << end();
    return false;
  }

  vector<string> words;
  while (has_data(in) && in.peek() != '\n') {
    skip_whitespace_but_not_newline(in);
    if (!has_data(in)) {
      raise_error << "1: unbalanced '[' for recipe\n" << end();
      return false;
    }
    string word = next_word(in);
    words.push_back(word);
    skip_whitespace_but_not_newline(in);
  }
  skip_whitespace_and_comments(in);
  if (SIZE(words) == 1 && words.at(0) == "]") {
    return false;  // end of recipe
  }

  if (SIZE(words) == 1 && !isalnum(words.at(0).at(0)) && words.at(0).at(0) != '$') {
    curr->is_label = true;
    curr->label = words.at(0);
    trace(9993, "parse") << "label: " << curr->label << end();
    if (!has_data(in)) {
      raise_error << "7: unbalanced '[' for recipe\n" << end();
      return false;
    }
    return true;
  }

  vector<string>::iterator p = words.begin();
  if (find(words.begin(), words.end(), "<-") != words.end()) {
    for (; *p != "<-"; ++p) {
      curr->products.push_back(reagent(*p));
    }
    ++p;  // skip <-
  }

  if (p == words.end()) {
    raise_error << "instruction prematurely ended with '<-'\n" << end();
    return false;
  }
  curr->old_name = curr->name = *p;  p++;
  // curr->operation will be set in a later layer

  for (; p != words.end(); ++p) {
    curr->ingredients.push_back(reagent(*p));
  }

  trace(9993, "parse") << "instruction: " << curr->name << end();
  trace(9993, "parse") << "  number of ingredients: " << SIZE(curr->ingredients) << end();
  for (vector<reagent>::iterator p = curr->ingredients.begin(); p != curr->ingredients.end(); ++p) {
    trace(9993, "parse") << "  ingredient: " << p->to_string() << end();
  }
  for (vector<reagent>::iterator p = curr->products.begin(); p != curr->products.end(); ++p) {
    trace(9993, "parse") << "  product: " << p->to_string() << end();
  }
  if (!has_data(in)) {
    raise_error << "9: unbalanced '[' for recipe\n" << end();
    return false;
  }
  return true;
}

string next_word(istream& in) {
  skip_whitespace_but_not_newline(in);
  // End next_word Special-cases
  ostringstream out;
  slurp_word(in, out);
  skip_whitespace_and_comments_but_not_newline(in);
  return out.str();
}

:(before "End Globals")
// word boundaries
const string Terminators("(){}");
:(code)
void slurp_word(istream& in, ostream& out) {
  char c;
  if (has_data(in) && Terminators.find(in.peek()) != string::npos) {
    in >> c;
    out << c;
    return;
  }
  while (in >> c) {
    if (isspace(c) || Terminators.find(c) != string::npos || Ignore.find(c) != string::npos) {
      in.putback(c);
      break;
    }
    out << c;
  }
}

void skip_whitespace_and_comments(istream& in) {
  while (true) {
    if (!has_data(in)) break;
    if (isspace(in.peek())) in.get();
    else if (Ignore.find(in.peek()) != string::npos) in.get();
    else if (in.peek() == '#') skip_comment(in);
    else break;
  }
}

// confusing; move to the next line only to skip a comment, but never otherwise
void skip_whitespace_and_comments_but_not_newline(istream& in) {
  while (true) {
    if (!has_data(in)) break;
    if (in.peek() == '\n') break;
    if (isspace(in.peek())) in.get();
    else if (Ignore.find(in.peek()) != string::npos) in.get();
    else if (in.peek() == '#') skip_comment(in);
    else break;
  }
}

void skip_comment(istream& in) {
  if (has_data(in) && in.peek() == '#') {
    in.get();
    while (has_data(in) && in.peek() != '\n') in.get();
  }
}

//: Warn if a recipe gets redefined, because large codebases can accidentally
//: step on their own toes. But there'll be many occasions later where
//: we'll want to disable the warnings.
:(before "End Globals")
bool Disable_redefine_warnings = false;
:(before "End Setup")
Disable_redefine_warnings = false;
:(code)
bool warn_on_redefine(const string& recipe_name) {
  if (Disable_redefine_warnings) return false;
  return true;
}

// for debugging
:(code)
void show_rest_of_stream(istream& in) {
  cerr << '^';
  char c;
  while (in >> c) {
    cerr << c;
  }
  cerr << "$\n";
  exit(0);
}

//: Have tests clean up any recipes they added.
:(before "End Globals")
vector<recipe_ordinal> Recently_added_recipes;
long long int Reserved_for_tests = 1000;
:(before "End Setup")
clear_recently_added_recipes();
:(code)
void clear_recently_added_recipes() {
  for (long long int i = 0; i < SIZE(Recently_added_recipes); ++i) {
    if (Recently_added_recipes.at(i) >= Reserved_for_tests  // don't renumber existing recipes, like 'interactive'
        && contains_key(Recipe, Recently_added_recipes.at(i)))  // in case previous test had duplicate definitions
      Recipe_ordinal.erase(get(Recipe, Recently_added_recipes.at(i)).name);
    Recipe.erase(Recently_added_recipes.at(i));
  }
  // Clear Other State For Recently_added_recipes
  Recently_added_recipes.clear();
}

:(scenario parse_comment_outside_recipe)
# this comment will be dropped by the tangler, so we need a dummy recipe to stop that
recipe f1 [ ]
# this comment will go through to 'load'
recipe main [
  1:number <- copy 23
]
+parse: instruction: copy
+parse:   ingredient: {"23": "literal"}
+parse:   product: {"1": "number"}

:(scenario parse_comment_amongst_instruction)
recipe main [
  # comment
  1:number <- copy 23
]
+parse: instruction: copy
+parse:   ingredient: {"23": "literal"}
+parse:   product: {"1": "number"}

:(scenario parse_comment_amongst_instruction_2)
recipe main [
  # comment
  1:number <- copy 23
  # comment
]
+parse: instruction: copy
+parse:   ingredient: {"23": "literal"}
+parse:   product: {"1": "number"}

:(scenario parse_comment_amongst_instruction_3)
recipe main [
  1:number <- copy 23
  # comment
  2:number <- copy 23
]
+parse: instruction: copy
+parse:   ingredient: {"23": "literal"}
+parse:   product: {"1": "number"}
+parse: instruction: copy
+parse:   ingredient: {"23": "literal"}
+parse:   product: {"2": "number"}

:(scenario parse_comment_after_instruction)
recipe main [
  1:number <- copy 23  # comment
]
+parse: instruction: copy
+parse:   ingredient: {"23": "literal"}
+parse:   product: {"1": "number"}

:(scenario parse_label)
recipe main [
  +foo
]
+parse: label: +foo

:(scenario parse_dollar_as_recipe_name)
recipe main [
  $foo
]
+parse: instruction: $foo

:(scenario parse_multiple_properties)
recipe main [
  1:number <- copy 23/foo:bar:baz
]
+parse: instruction: copy
+parse:   ingredient: {"23": "literal", "foo": <"bar" : <"baz" : <>>>}
+parse:   product: {"1": "number"}

:(scenario parse_multiple_products)
recipe main [
  1:number, 2:number <- copy 23
]
+parse: instruction: copy
+parse:   ingredient: {"23": "literal"}
+parse:   product: {"1": "number"}
+parse:   product: {"2": "number"}

:(scenario parse_multiple_ingredients)
recipe main [
  1:number, 2:number <- copy 23, 4:number
]
+parse: instruction: copy
+parse:   ingredient: {"23": "literal"}
+parse:   ingredient: {"4": "number"}
+parse:   product: {"1": "number"}
+parse:   product: {"2": "number"}

:(scenario parse_multiple_types)
recipe main [
  1:number, 2:address:number <- copy 23, 4:number
]
+parse: instruction: copy
+parse:   ingredient: {"23": "literal"}
+parse:   ingredient: {"4": "number"}
+parse:   product: {"1": "number"}
+parse:   product: {"2": <"address" : <"number" : <>>>}

:(scenario parse_properties)
recipe main [
  1:number:address/lookup <- copy 23
]
+parse:   product: {"1": <"number" : <"address" : <>>>, "lookup": <>}

//: this test we can't represent with a scenario
:(code)
void test_parse_comment_terminated_by_eof() {
  Trace_file = "parse_comment_terminated_by_eof";
  load("recipe main [\n"
       "  a:number <- copy 34\n"
       "]\n"
       "# abc");  // no newline after comment
  cerr << ".";  // termination = success
}

:(scenario warn_on_redefine)
% Hide_warnings = true;
recipe main [
  1:number <- copy 23
]
recipe main [
  1:number <- copy 24
]
+warn: redefining recipe main

:(scenario redefine_without_warning)
% Hide_warnings = true;
recipe main [
  1:number <- copy 23
]
recipe! main [
  1:number <- copy 24
]
-warn: redefining recipe main
$warn: 0