summaryrefslogtreecommitdiff
path: root/indra/llui/llviewquery.cpp
blob: 66262609ae313f9a9058d83ba8a0b8c03266a984 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
/** 
 * @file llviewquery.cpp
 * @brief Implementation of view query class.
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#include "linden_common.h"

#include "llview.h"
#include "lluictrl.h"
#include "llviewquery.h"

void LLQuerySorter::sort(LLView * parent, viewList_t &children) const {}

filterResult_t LLLeavesFilter::operator() (const LLView* const view, const viewList_t & children) const 
{
	return filterResult_t(children.empty(), TRUE);
}

filterResult_t LLRootsFilter::operator() (const LLView* const view, const viewList_t & children) const 
{
	return filterResult_t(TRUE, FALSE);
}

filterResult_t LLVisibleFilter::operator() (const LLView* const view, const viewList_t & children) const 
{
	return filterResult_t(view->getVisible(), view->getVisible());
}
filterResult_t LLEnabledFilter::operator() (const LLView* const view, const viewList_t & children) const 
{
	return filterResult_t(view->getEnabled(), view->getEnabled());
}
filterResult_t LLTabStopFilter::operator() (const LLView* const view, const viewList_t & children) const 
{
	return filterResult_t(view->isCtrl() && static_cast<const LLUICtrl*>(view)->hasTabStop(),
						view->canFocusChildren());
}

filterResult_t LLCtrlFilter::operator() (const LLView* const view, const viewList_t & children) const 
{
	return filterResult_t(view->isCtrl(),TRUE);
}

//
// LLViewQuery
//

viewList_t LLViewQuery::run(LLView* view) const
{
	viewList_t result;

	// prefilter gets immediate children of view
	filterResult_t pre = runFilters(view, *view->getChildList(), mPreFilters);
	if(!pre.first && !pre.second)
	{
		// not including ourselves or the children
		// nothing more to do
		return result;
	}

	viewList_t filtered_children;
	filterResult_t post(TRUE, TRUE);
	if(pre.second)
	{
		// run filters on children
		filterChildren(view, filtered_children);
		// only run post filters if this element passed pre filters
		// so if you failed to pass the pre filter, you can't filter out children in post
		if (pre.first)
		{
			post = runFilters(view, filtered_children, mPostFilters);
		}
	}

	if(pre.first && post.first) 
	{
		result.push_back(view);
	}

	if(pre.second && post.second)
	{
		result.insert(result.end(), filtered_children.begin(), filtered_children.end());
	}

	return result;
}

void LLViewQuery::filterChildren(LLView* parent_view, viewList_t & filtered_children) const
{
	LLView::child_list_t views(*(parent_view->getChildList()));
	if (mSorterp)
	{
		mSorterp->sort(parent_view, views); // sort the children per the sorter
	}
	for(LLView::child_list_iter_t iter = views.begin();
		iter != views.end();
		iter++)
	{
		viewList_t indiv_children = this->run(*iter);
		filtered_children.splice(filtered_children.end(), indiv_children);
	}
}

filterResult_t LLViewQuery::runFilters(LLView * view, const viewList_t children, const filterList_t filters) const
{
	filterResult_t result = filterResult_t(TRUE, TRUE);
	for(filterList_const_iter_t iter = filters.begin();
		iter != filters.end();
		iter++)
	{
		filterResult_t filtered = (**iter)(view, children);
		result.first = result.first && filtered.first;
		result.second = result.second && filtered.second;
	}
	return result;
}