dfl.clipboard source code

1 // Written by Christopher E. Miller
2 // See the included license.txt for copyright and license details.
3 
4 
5 /// Interfacing with the system clipboard for copy and paste operations.
6 module dfl.clipboard;
7 
8 private import dfl.base, dfl.internal.winapi, dfl.data, dfl.internal.wincom,
9 	dfl.internal.dlib;
10 
11 
12 ///
13 class Clipboard // docmain
14 {
15 	private this() {}
16 	
17 	
18 	static:
19 	
20 	///
21 	dfl.data.IDataObject getDataObject()
22 	{
23 		dfl.internal.wincom.IDataObject comdobj;
24 		if(S_OK != OleGetClipboard(&comdobj))
25 			throw new DflException("Unable to obtain clipboard data object");
26 		if(comdobj is comd)
27 			return dd;
28 		//delete dd;
29 		comd = comdobj;
30 		return dd = new ComToDdataObject(comdobj);
31 	}
32 	
33 	/// ditto
34 	void setDataObject(Data obj, bool persist = false)
35 	{
36 		comd = null;
37 		/+
38 		Object ddd;
39 		ddd = cast(Object)dd;
40 		delete ddd;
41 		+/
42 		dd = null;
43 		objref = null;
44 		
45 		if(obj.info)
46 		{
47 			if(cast(TypeInfo_Class)obj.info)
48 			{
49 				Object foo;
50 				foo = obj.getObject();
51 				
52 				/+
53 				if(cast(Bitmap)foo)
54 				{
55 					// ...
56 				}
57 				else +/ if(cast(dfl.data.IDataObject)foo)
58 				{
59 					dd = cast(dfl.data.IDataObject)foo;
60 					objref = foo;
61 				}
62 				else
63 				{
64 					// Can't set any old class object.
65 					throw new DflException("Unknown data object");
66 				}
67 			}
68 			else if(obj.info == typeid(dfl.data.IDataObject))
69 			{
70 				dd = obj.getValue!(dfl.data.IDataObject)();
71 				objref = cast(Object)dd;
72 			}
73 			else if(cast(TypeInfo_Interface)obj.info)
74 			{
75 				// Can't set any old interface.
76 				throw new DflException("Unknown data object");
77 			}
78 			else
79 			{
80 				DataObject foo = new DataObject;
81 				dd = foo;
82 				objref = foo;
83 				dd.setData(obj);
84 			}
85 			
86 			assert(!(dd is null));
87 			comd = new DtoComDataObject(dd);
88 			if(S_OK != OleSetClipboard(comd))
89 			{
90 				comd = null;
91 				//delete dd;
92 				dd = null;
93 				goto err_set;
94 			}
95 			
96 			if(persist)
97 				OleFlushClipboard();
98 		}
99 		else
100 		{
101 			dd = null;
102 			if(S_OK != OleSetClipboard(null))
103 				goto err_set;
104 		}
105 		
106 		return;
107 		err_set:
108 		throw new DflException("Unable to set clipboard data");
109 	}
110 	
111 	/// ditto
112 	void setDataObject(dfl.data.IDataObject obj, bool persist = false)
113 	{
114 		setDataObject(Data(obj), persist);
115 	}
116 	
117 	
118 	///
119 	void setString(Dstring str, bool persist = false)
120 	{
121 		setDataObject(Data(str), persist);
122 	}
123 	
124 	/// ditto
125 	Dstring getString()
126 	{
127 		dfl.data.IDataObject ido;
128 		ido = getDataObject();
129 		if(ido.getDataPresent(DataFormats.utf8))
130 			return ido.getData(DataFormats.utf8).getString();
131 		return null; // ?
132 	}
133 	
134 	
135 	///
136 	// ANSI text.
137 	void setText(ubyte[] ansiText, bool persist = false)
138 	{
139 		setDataObject(Data(ansiText), persist);
140 	}
141 	
142 	/// ditto
143 	ubyte[] getText()
144 	{
145 		dfl.data.IDataObject ido;
146 		ido = getDataObject();
147 		if(ido.getDataPresent(DataFormats.text))
148 			return ido.getData(DataFormats.text).getText();
149 		return null; // ?
150 	}
151 	
152 	
153 	private:
154 	dfl.internal.wincom.IDataObject comd;
155 	dfl.data.IDataObject dd;
156 	Object objref; // Prevent dd from being garbage collected!
157 	
158 	
159 	/+
160 	static ~this()
161 	{
162 		Object ddd;
163 		ddd = cast(Object)dd;
164 		delete ddd;
165 	}
166 	+/
167 }
168