Mercurial > projects > mde
view mde/gui/widget/createWidget.d @ 105:08651e8a8c51
Quit button, big changes to content system.
Moved mde.gui.content to mde.content to reflect it's not only used by the gui.
Split Content module into Content and AStringContent.
New AContent and EventContent class.
Callbacks are now generic and implemented in AContent.
Renamed TextContent to StringContent and ValueContent to AStringContent.
author | Diggory Hardy <diggory.hardy@gmail.com> |
---|---|
date | Sat, 29 Nov 2008 12:36:39 +0000 |
parents | 42e241e7be3e |
children | c9fc2d303178 |
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/* LICENSE BLOCK Part of mde: a Modular D game-oriented Engine Copyright © 2007-2008 Diggory Hardy This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /** This module contains code to create a widget based on an enumeration value passed at runtime. * * It could be a part of the WidgetLoader.makeWidget function, but having it here makes things * tidier. */ module mde.gui.widget.createWidget; import mde.gui.widget.Ifaces; import mde.gui.exception : WidgetDataException; import mde.content.Content; // Widgets to create: import mde.gui.widget.layout; import mde.gui.widget.miscWidgets; import mde.gui.widget.TextWidget; import mde.gui.widget.miscContent; import mde.gui.widget.textContent; import mde.gui.widget.Floating; import tango.util.log.Log : Log, Logger; private Logger logger; static this () { logger = Log.getLogger ("mde.gui.widget.createWidget"); } /** Create a widget. * * Usually called by the widget manager's makeWidget function. * * Widget created of type data.ints[0] (see enum WIDGET_TYPES), with one of the following CTORs: * --- * this (IWidgetManager mgr, WidgetData data); * // Called if (data.ints[0] & WIDGET_TYPES.TAKES_CONTENT): * this (IWidgetManager mgr, WidgetData data, IContent content); * --- *************************************************************************************************/ IChildWidget createWidget (IWidgetManager mgr, widgetID id, WidgetData data, IContent content) in { assert (mgr !is null, "createWidget: mgr is null"); } body { if (data.ints.length < 1) { logger.error ("No int data; creating a debug widget"); data.ints = [WIDGET_TYPE.Debug]; } int type = data.ints[0]; // type is first element of data try { //pragma (msg, binarySearch ("type", WIDGETS)); mixin (binarySearch ("type", WIDGETS)); // creates widget by type: new XWidget (mgr, data [, parent]); // Not returned a new widget or thrown: logger.error ("Bad widget type: {}; creating a debug widget instead",type); } catch (Exception e) { logger.error ("Error creating widget: {}; creating a debug widget instead.", e.msg); } return new DebugWidget (mgr, id, data); } /+ for converting to a char[] name (unused) static this() { WIDGET_NAMES = [ FixedBlank : "FixedBlank", SizableBlank : "SizableBlank", Button : "Button", GridLayout : "GridLayout" ]; }+/ private: /// Widget types. enum WIDGET_TYPE : int { FUNCTION = 0x2000, // Function called instead of widget created (no "Widget" appended to fct name) TAKES_CONTENT = 0x4000, // Flag indicates widget's this should be passed an IContent reference. PARENT = 0x8000, // widget can have children; not used by code (except in data files) // Use widget names rather than usual capitals convention Unnamed = 0x0, // Only for use by widgets not created with createWidget // blank: 0x1 FixedBlank = 0x1, SizableBlank = 0x2, Debug = 0xF, // buttons: 0x10 Button = 0x10, // labels: 0x20 ContentLabel = TAKES_CONTENT | 0x20, TextLabel = 0x21, // content functions: 0x30 editContent = FUNCTION | TAKES_CONTENT | 0x30, addContent = FUNCTION | 0x31, // content widgets: 0x40 DisplayContent = TAKES_CONTENT | 0x40, BoolContent = TAKES_CONTENT | 0x41, AStringContent = TAKES_CONTENT | 0x42, ButtonContent = TAKES_CONTENT | 0x43, GridLayout = TAKES_CONTENT | PARENT | 0x100, ContentList = TAKES_CONTENT | PARENT | 0x110, FloatingArea = PARENT | 0x200, } //const char[][int] WIDGET_NAMES; // Only used for binarySearch algorithm generation; must be ordered by numerical values. const char[][] WIDGETS = [ "FixedBlank", "SizableBlank", "Debug", "Button", "TextLabel", "addContent", "ContentLabel", "DisplayContent", "BoolContent", "AStringContent", "ButtonContent", "editContent", "FloatingArea", "GridLayout", "ContentList"]; /* Generates a binary search algorithm. */ char[] binarySearch (char[] var, char[][] consts) { if (consts.length > 3) { return "if (" ~ var ~ " <= WIDGET_TYPE." ~ consts[$/2 - 1] ~ ") {\n" ~ binarySearch (var, consts[0 .. $/2]) ~ "} else {\n" ~ binarySearch (var, consts[$/2 .. $]) ~ "}\n"; } else { char[] ret; foreach (c; consts) { ret ~= "if (" ~ var ~ " == WIDGET_TYPE." ~ c ~ ") {\n" ~ " debug (mdeWidgets) logger.trace (\"Creating new "~c~"Widget.\");\n" ~ " static if (WIDGET_TYPE."~c~" & WIDGET_TYPE.FUNCTION)\n" ~ " return " ~ c ~ " (mgr, id, data, content);\n" ~ " else static if (WIDGET_TYPE."~c~" & WIDGET_TYPE.TAKES_CONTENT)\n" ~ " return new " ~ c ~ "Widget (mgr, id, data, content);\n" ~ " else\n" ~ " return new " ~ c ~ "Widget (mgr, id, data);\n" ~ "} else "; } ret = ret[0..$-6] ~ '\n'; // remove last else return ret; } } debug { // check items in WIDGETS are listed in order char[] WIDGETS_check () { char[] ret; for (int i = WIDGETS.length-2; i > 0; --i) { ret ~= "WIDGET_TYPE."~WIDGETS[i] ~" >= WIDGET_TYPE."~ WIDGETS[i+1]; if (i>1) ret ~= " || "; } return ret; } mixin ("static if ("~WIDGETS_check~") static assert (false, \"WIDGETS is not in order!\");"); }