LUMIERA.clone/tests/gui/interact/ui-coord-resolver-test.cpp

755 lines
42 KiB
C++

/*
UICoordResolver(Test) - resolve UI coordinates against actual topology
Copyright (C) Lumiera.org
2017, Hermann Vosseler <Ichthyostega@web.de>
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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* *****************************************************/
/** @file ui-coord-resolver-test.cpp
** unit test \ref UICoordResolver_test
*/
#include "lib/test/run.hpp"
#include "lib/test/test-helper.hpp"
#include "gui/interact/ui-coord.hpp"
#include "gui/interact/ui-coord-resolver.hpp"
#include "gui/interact/gen-node-location-query.hpp"
#include "lib/diff/gen-node.hpp"
#include "lib/format-util.hpp"
#include "lib/util.hpp"
#include <string>
using std::string;
using lib::diff::MakeRec;
using lib::diff::Rec;
using lib::Symbol;
using util::isnil;
using util::join;
namespace gui {
namespace interact {
namespace test {
using lumiera::error::LERR_(INVALID);
using lumiera::error::LERR_(STATE);
/******************************************************************************//**
* @test verify query and mutation of UICoord in relation to actual UI topology.
* A UI-Coordinate resolver is a special builder, which is initialised by
* the given coordinate spec, and also attached to a "location query API",
* which allows to investigate the current actual UI structure. The builder
* then exposes query and mutation operations, to determine to what extent
* the coordinate spec is "covered" by the real UI, and to match and expand
* any wildcards in the coordinate spec (pattern).
*
* @see UICoordResolver
* @see navigator.hpp
* @see ViewLocator
* @see UICoord_test
*/
class UICoordResolver_test : public Test
{
virtual void
run (Arg)
{
verify_simpleUsage();
verify_backingQuery();
verify_queryAnchor();
verify_mutateCoverage();
verify_mutateCoverPartially();
verify_mutateAnchor();
verify_mutateExtend();
}
/** @test introduction to UI coordinate resolution
* - use a backing "real" (dummy) data structure to resolve against
* - establish a suitable implementation of the LocationQuery interface
* - attach a resolver
* - have fun
*/
void
verify_simpleUsage()
{
// a Test dummy placeholder for the real UI structure
Rec dummyUiStructure = MakeRec()
.set("window-1"
, MakeRec()
.type("perspective-A")
)
.set("window-2"
, MakeRec()
.type("perspective-B")
.set("panelX", MakeRec())
.set("panelXX", MakeRec())
);
// helper to answer "location queries" backed by this structure
GenNodeLocationQuery locationQuery{dummyUiStructure};
UICoord uic{"window-2","*","panelX","someView"};
UICoordResolver resolver{uic, locationQuery};
CHECK (not resolver.isCovered());
CHECK ( resolver.canCover());
UICoord uic2 = resolver.cover()
.extend("otherView");
CHECK ("UI:window-2[perspective-B]-panelX.otherView" == string(uic2));
}
/** @test verify the command-and-query interface backing the resolver.
* This test actually uses a dummy implementation of the interface, which,
* instead of navigating an actual UI topology, just uses a `Record<GenNode>`
* (a "GenNode tree") to emulate the hierarchical structure of UI components.
* @remarks note some twists how the GenNode tree is used here to represent
* an imaginary UI structure:
* - we use the special _type_ attribute to represent the _perspective_
* within each window; deliberately, we'll use this twisted structure
* here to highlight the fact that the backing structure need not be
* homogeneous; rather, it may require explicit branching
* - we use the _attributes_ within the GenNode "object" representation,
* since these are named nested elements, and the whole notion of an
* UI coordinate path is based on named child components
* - we use the _object builder_ helper to define the whole structure
* as nested inline tree; named nested elements ("attributes") are
* added with the `set(key, val)` builder function, and for each
* nested scope, we start a new nested builder with `MakeRec()`.
* - there is a special convention _for this test setup solely_ to
* set the `currentWindow` to be the last one in list -- in a real
* UI this would of course not be a configurable property of the
* LocationQuery, but rather just reflect the transient window
* state and return the currently activated window
* @see IterTreeExplorer_test::verify_IterSource() regarding "child exploration"...
*/
void
verify_backingQuery()
{
GenNodeLocationQuery queryAPI{MakeRec()
.set("window-1"
, MakeRec()
.type("perspective-A")
.set("panelX"
, MakeRec()
.set("firstView", MakeRec())
.set("secondView", MakeRec())
)
)
.set("window-2"
, MakeRec()
.type("perspective-B")
.set("panelY", MakeRec())
)
.set("window-3"
, MakeRec()
.type("perspective-C")
.set("panelZ"
, MakeRec()
.set("thirdView", MakeRec())
)
.set("panelZZ", MakeRec())
)
};
// the LocationQuery API works by matching a UICoord spec against the "real" structure
UICoord uic1 = UICoord::window("window-2").persp("perspective-B");
UICoord uic2 = UICoord::window("windows");
UICoord uic3 = UICoord::firstWindow().persp("perspective-A").panel("panelX").view("secondView");
UICoord uic4 = UICoord::currentWindow().persp("perspective-B");
UICoord uic5 = UICoord::currentWindow().persp("perspective-C").panel("panelZ").view("someOtherView");
CHECK ("window-2" == queryAPI.determineAnchor(uic1));
CHECK (Symbol::BOTTOM == queryAPI.determineAnchor(uic2));
CHECK ("window-1" == queryAPI.determineAnchor(uic3));
CHECK ("window-3" == queryAPI.determineAnchor(uic4));
CHECK ("window-3" == queryAPI.determineAnchor(uic5));
CHECK (2 == queryAPI.determineCoverage(uic1));
CHECK (0 == queryAPI.determineCoverage(uic2));
CHECK (4 == queryAPI.determineCoverage(uic3));
CHECK (1 == queryAPI.determineCoverage(uic4));
CHECK (3 == queryAPI.determineCoverage(uic5));
LocationQuery::ChildIter cii = queryAPI.getChildren(uic3, 3);
CHECK (not isnil(cii));
CHECK ("firstView" == *cii);
++cii;
CHECK ("secondView" == *cii);
CHECK (not isnil(cii));
++cii;
CHECK (isnil(cii));
CHECK ("window-1, window-2, window-3" == join (queryAPI.getChildren (uic3, 0)));
CHECK ("perspective-A" == join (queryAPI.getChildren (uic3, 1)));
CHECK ("panelX" == join (queryAPI.getChildren (uic3, 2)));
CHECK ("firstView, secondView" == join (queryAPI.getChildren (uic3, 3)));
CHECK (isnil ( queryAPI.getChildren (uic3, 4))); // "firstView" has no children
CHECK ("window-1, window-2, window-3" == join (queryAPI.getChildren (uic2, 0)));
VERIFY_ERROR (STATE, queryAPI.getChildren (uic2, 1) ); // "windows" at pos==0 is not covered by real UI
CHECK ("window-1, window-2, window-3" == join (queryAPI.getChildren (uic5, 0)));
CHECK ("perspective-C" == join (queryAPI.getChildren (uic5, 1)));
CHECK ("panelZ, panelZZ" == join (queryAPI.getChildren (uic5, 2)));
CHECK ("thirdView" == join (queryAPI.getChildren (uic5, 3)));
VERIFY_ERROR (STATE, queryAPI.getChildren (uic5, 4) ); // "someOtherView" at level 4 does not exist
// verify "child exploration" via iterator interface
cii = queryAPI.getChildren (uic3, 0); // enter at root level...
CHECK ("window-1" == *cii); // first child of root to appear is "window-1"
CHECK (0 == cii.depth()); // (note depth just happens to coincide with absolute tree depth here)
cii.expandChildren(); // drill down into current element's children
CHECK (1 == cii.depth());
CHECK ("perspective-A" == *cii); // which is just one, the perspective
cii.expandChildren(); // drill down into the (formal, logical) children of "perspective-A"
CHECK (2 == cii.depth());
CHECK ("panelX" == *cii); // ..and find the "panelX" at level 2
cii.expandChildren(); // drill down one level further
CHECK (3 == cii.depth());
CHECK ("firstView" == *cii); // and then just continue iteration, which first explores that scope...
CHECK ("firstView, secondView, window-2, window-3" == join (cii)); // ...followed by returning to the enclosing scopes, finally top level.
}
/** @test query anchorage of given UI coordinates.
* - an anchored UI coordinate spec explicitly rooted within a top level window.
* - an explicit UI coordinate spec impossible to anchor within current UI tree
* - a UI coordinate spec with dynamic reference to first/current window
* - an incomplete spec, which needs to be solved (pattern matched) to determine anchor.
*/
void
verify_queryAnchor()
{
GenNodeLocationQuery tree{MakeRec()
.set("window-1"
, MakeRec()
.type("perspective-A")
)
.set("window-2"
, MakeRec()
.type("perspective-B")
.set("panelX"
, MakeRec()
.set("someView", MakeRec())
)
)
};
UICoord uic1 = UICoord::window("window-1").persp("perspective-A");
UICoord uic2 = UICoord::window("windows");
UICoord uic3 = UICoord::firstWindow();
UICoord uic4 = UICoord::currentWindow().persp("perspective-B");
UICoord uic5 = UICoord::currentWindow().panel("panelY");
UICoord uic6 = UICoord().view("someView");
UICoordResolver r1{uic1, tree};
UICoordResolver r2{uic2, tree};
UICoordResolver r3{uic3, tree};
UICoordResolver r4{uic4, tree};
UICoordResolver r5{uic5, tree};
UICoordResolver r6{uic6, tree};
CHECK ( r1.isAnchored());
CHECK (not r2.isAnchored());
CHECK ( r3.isAnchored());
CHECK ( r4.isAnchored());
CHECK ( r5.isAnchored());
CHECK (not r6.isAnchored());
CHECK ( r1.canAnchor());
CHECK (not r2.canAnchor());
CHECK ( r3.canAnchor());
CHECK ( r4.canAnchor());
CHECK ( r5.canAnchor());
CHECK ( r6.canAnchor());
}
/** @test path matching algorithm to resolve UI coordinates with wildcards against the current UI structure tree.
* Since an UI coordinate path with gaps and wildcards could match anywhere, even several times, we need to perform
* an exhaustive search with backtracking over the whole tree. By convention, we use the first maximal solution,
* which can be just a partial solution, leaving an additional uncovered trailing part of the UI coordinate spec.
* Whenever a coordinate spec is _not explicit,_ has wildcards or a leading gap, we need to perform the full
* matching algorithm, even to just answer the question if coverage _is possible_. The result, i.e. the computed
* coverage, is cached internally, and can be used to _mutate_ the UI coordinate spec to match that coverage.
*
* This test verifies various corner cases; especially there is a rule to prevent a partial match based
* on wildcards solely, rather we require at least one explicit match to qualify as partial solution.
* - (1) trivial cases not requiring a tree search
* ** total coverage
* ** partial coverage, leaving an uncovered suffix
* - (2) expand dynamic anchor specifiers
* ** with following content
* ** anchor spec alone
* - (3) wildcard interpolation
* ** interpolate a single gap
* ** interpolate several gaps
* ** interpolate anchor and consecutive wildcards
* ** discriminate by anchor and fill additional gap
* - (4) failure detection
* ** trailing wildcards are stripped and ignored
* ** reject gap beyond existing real UI tree
* ** reject gap ending at perimeter of real UI tree
* ** reject interpolated gap on immediately following mismatch
* ** reject mismatch immediately behind second gap
* ** mismatch of tree level
* ** contradiction to anchorage
* - (5) selection between several possible solutions
* ** the length of the covered trailing suffix decides
* ** when two solutions are equivalent, pick the fist one
* ** best solution will be picked, irrespective of discovery order
*/
void
verify_mutateCoverage()
{
GenNodeLocationQuery tree{MakeRec()
.set("window-1"
, MakeRec()
.type("persp-A")
.set("panelX"
, MakeRec()
.set("firstView", MakeRec())
.set("secondView", MakeRec())
)
.set("panelZ"
, MakeRec()
.set("thirdView"
, MakeRec()
.set("#1", MakeRec())
.set("#2", MakeRec())
.set("tab", MakeRec())
)
)
)
.set("window-2"
, MakeRec()
.type("persp-B")
.set("panelY", MakeRec())
)
.set("window-3"
, MakeRec()
.type("persp-C")
.set("panelZ"
, MakeRec()
.set("thirdView"
, MakeRec()
.set("tab"
, MakeRec()
.set("sub", MakeRec())
)
.set("#1", MakeRec())
)
)
.set("panelZZ", MakeRec())
)
};
/* === trivial cases === */
UICoordResolver r11 {UICoord::window("window-1")
.persp("persp-A")
.panel("panelX"), tree};
CHECK (r11.isCovered());
CHECK (3 == r11.coverDepth());
UICoordResolver r12 {UICoord::window("window-1")
.persp("persp-A")
.panel("panelX")
.view("thirdView"), tree};
CHECK (not r12.isCovered());
CHECK ( r12.isCoveredPartially());
CHECK (3 ==r12.coverDepth());
CHECK ("UI:window-1[persp-A]-panelX.thirdView" == string(r12));
r12.cover();
CHECK (r12.isCovered());
CHECK (r12.isCoveredPartially());
CHECK (3 ==r12.coverDepth());
CHECK ("UI:window-1[persp-A]-panelX" == string(r12));
/* === expand anchor === */
UICoordResolver r21 {UICoord::firstWindow().persp("persp-A"), tree};
CHECK ("UI:firstWindow[persp-A]" == string(r21));
r21.cover();
CHECK ("UI:window-1[persp-A]" == string(r21));
/* === expand anchor alone === */
UICoordResolver r22 {UICoord::currentWindow(), tree};
CHECK ("UI:window-3" == string(r22.cover()));
/* === interpolate a single gap === */
UICoordResolver r31 {UICoord::window("window-1").view("secondView"), tree};
CHECK ("UI:window-1[*]-*.secondView" == string(r31));
CHECK (0 ==r31.coverDepth());
CHECK (not r31.isCovered());
CHECK (r31.canCover());
r31.cover();
CHECK (r31.isCovered());
CHECK (4 == r31.coverDepth());
CHECK ("UI:window-1[persp-A]-panelX.secondView" == string(r31));
/* === interpolate several gaps === */
UICoordResolver r32 {UICoord().view("thirdView").path("sub"), tree};
CHECK ("UI:window-3[persp-C]-panelZ.thirdView.tab/sub" == string(r32.cover()));
/* === interpolate anchor and consecutive wildcards === */
UICoordResolver r33 {UICoord::firstWindow().tab(2), tree};
CHECK ("UI:window-1[persp-A]-panelZ.thirdView.#2" == string(r33.cover()));
/* === discriminate by anchor and fill second gap === */
UICoordResolver r34 {UICoord::currentWindow().panel("panelZ").tab("tab"), tree};
CHECK ("UI:currentWindow[*]-panelZ.*.tab" == string(r34));
CHECK ("UI:window-3[persp-C]-panelZ.thirdView.tab" == string(r34.cover())); // Note: rest of the path would also match on window-1, but currentWindow == window-3
UICoordResolver r35 {UICoord::currentWindow().persp(UIC_ELIDED).panel("panelZ").tab("tab"), tree};
CHECK ("UI:currentWindow[.]-panelZ.*.tab" == string(r35));
CHECK ("UI:window-3[persp-C]-panelZ.thirdView.tab" == string(r35.cover())); // elided (existentially quantified) element interpolated similar to a wildcard
UICoordResolver r36 {UICoord::currentWindow().panel(UIC_ELIDED).view("nonexisting"), tree};
CHECK ("UI:currentWindow[*]-..nonexisting" == string(r36));
CHECK ("UI:window-3[persp-C]-panelZ" == string(r36.cover())); // ...but elided counts as existing element and matches arbitrarily (-> contrast this to r44)
/* === trailing wildcards stripped automatically === */
UICoordResolver r41 {UICoord::window("window-2").append("*/*"), tree};
CHECK ("UI:window-2" == string(r41)); // Note: trailing wildcards are already discarded by PathArray / UICoord
r41.extend("*/*"); // if we now attempt to "sneak in" trailing wildcards...
CHECK ("UI:window-2[*]-*" == string(r41));
CHECK (not r41.canCover()); // ...then the algorithm rejects any solution
CHECK ("UI:window-2" == string(r41.cover())); // Note: but cover() will act on the previous coverage and just strip the extraneous suffix
/* === reject gap beyond existing real UI tree === */
UICoordResolver r42 {UICoord::window("window-2").append("*/*/*/some/path"), tree};
CHECK (not r42.canCover());
/* === reject gap ending at real UI tree boundary === */
UICoordResolver r43 {UICoord::currentWindow().view("firstView").tab("nonexisting"), tree};
CHECK (not r43.canCover());
/* === reject interpolated gap on mismatch right behind === */
UICoordResolver r44 {UICoord().view("otherView"), tree}; // Note: will be checked on all four existing views, but never matches
CHECK (not r44.canCover());
/* === reject mismatch immediately behind second gap === */
UICoordResolver r45 {UICoord().panel("panelZ").tab(3), tree}; // Note: we have two "panelZ", but none has a tab #3
CHECK (not r45.canCover());
/* === mismatch of tree level === */
UICoordResolver r46 {UICoord::currentWindow().append("*/*/panelZ/thirdView"), tree}; // Note: one '*' too much, thus 'panelZ' is matched on view level
CHECK (not r46.canCover());
/* === impossible to anchor === */
UICoordResolver r47 {UICoord::firstWindow().tab(3), tree};
CHECK (not r47.canCover());
/* === the solution with maximum covered depth wins === */
UICoordResolver r51 {UICoord().tab("tab").path("sub"), tree};
CHECK ("UI:window-3[persp-C]-panelZ.thirdView.tab/sub" == string(r51.cover())); // the second solution found covers to maximum depth
/* === when two solutions are equivalent, pick the fist one === */
UICoordResolver r52 {UICoord().tab("tab"), tree};
CHECK ("UI:window-1[persp-A]-panelZ.thirdView.tab" == string(r52.cover())); // "UI:window-3[persp-C]-panelZ.thirdView.tab" would match too
/* === best solution will be picked, irrespective of discovery order === */
UICoordResolver r531 {UICoord().persp("persp-A").tab(1), tree};
CHECK ("UI:window-1[persp-A]-panelZ.thirdView.#1" == string(r531.cover())); // best solution discovered as first one
UICoordResolver r532 {UICoord().view("thirdView").tab("tab"), tree};
CHECK ("UI:window-1[persp-A]-panelZ.thirdView.tab" == string(r532.cover())); // best solution is 3rd of five possible ones
UICoordResolver r533 {UICoord().persp("persp-C").tab(1), tree};
CHECK ("UI:window-3[persp-C]-panelZ.thirdView.#1" == string(r533.cover())); // best solution is found as last one
}
/** @test resolve by matching, but retain an extraneous, uncovered extension.
* This is a variation of the UICoordResolver::cover() operation, which likewise resolves
* any wildcards; but here we tolerate _additional elements below_ the covered part, as long
* as those are explicit. The typical use case is when we're about to create a new UI element
* at a specific existing anchor location within the UI. The extraneous uncovered part then
* describes those extra element yet to be created.
*/
void
verify_mutateCoverPartially()
{
GenNodeLocationQuery tree{MakeRec()
.set("window-2"
, MakeRec()
.type("persp-B")
.set("panelY"
, MakeRec()
.set("someView"
, MakeRec()
.set("#1", MakeRec())
.set("#2", MakeRec())
)
)
)
};
/* === explicitly given spec partially covered === */
UICoordResolver r1 {UICoord{"window-2","persp-B","panelY","otherView","tab"}, tree};
CHECK (3 == r1.coverDepth());
r1.coverPartially();
CHECK (not r1.isCovered());
CHECK (3 == r1.coverDepth());
CHECK (r1.isCoveredPartially()); // is covered down to the "panelY"
CHECK ("UI:window-2[persp-B]-panelY.otherView.tab" == string(r1));
r1.cover();
CHECK (r1.isCovered()); // cover() retains the covered part only
CHECK ("UI:window-2[persp-B]-panelY" == string(r1));
/* === fill wildcard gap but retain uncovered extension === */
UICoordResolver r2 {UICoord::currentWindow().view("someView").tab(3).path("sub"), tree};
CHECK (0 == r2.coverDepth());
r2.coverPartially();
CHECK (not r2.isCovered());
CHECK (4 == r2.coverDepth());
CHECK (r2.isCoveredPartially());
CHECK ("UI:window-2[persp-B]-panelY.someView.#3/sub" == string(r2));
r2.cover();
CHECK ("UI:window-2[persp-B]-panelY.someView" == string(r2));
/* === reject when gap can not be closed unambiguously === */
UICoordResolver r3 {UICoord::currentWindow().view("someView").path("sub"), tree};
CHECK (not r3.canCover()); // NOTE: second gap here, tab info missing
r3.coverPartially();
CHECK (isnil (r3));
/* === reject when some wildcards remain after partial coverage === */
UICoordResolver r4 {UICoord::currentWindow().tab(3).path("sub"), tree};
r4.coverPartially();
CHECK (isnil (r4));
/* === existentially quantified (elided) element constitutes partial coverage === */
UICoordResolver r5 {UICoord::currentWindow().persp(UIC_ELIDED).panel("fantasy").view("fantomas"), tree};
CHECK ("UI:currentWindow[.]-fantasy.fantomas" == string(r5));
CHECK (1 == r5.coverDepth());
r5.coverPartially();
CHECK (not r5.isCovered());
CHECK (2 == r5.coverDepth()); // Note side-effect of computing the coverage...
CHECK (r5.isCoveredPartially()); // it is known to be covered including "the" perspective
CHECK ("UI:window-2[persp-B]-fantasy.fantomas" == string(r5));
r5.cover();
CHECK ("UI:window-2[persp-B]" == string(r5));
CHECK (2 == r5.coverDepth());
}
/** @test mutate given UI coordinates by anchoring them.
* This operation changes only the window part of the coordinate spec;
* it might use the result of a preceding coverage solution search or even
* trigger such a search, but only to find out about the root window.
* @note some fine points touched here: to anchor a path is something
* different than to cover it; in fact there are cases where we
* can determine the possible anchor point, but are unable to
* cover the path spec beyond that. And, on the other hand,
* there are cases where you _need to compute a coverage_
* in order to decide upon the anchor point.
*/
void
verify_mutateAnchor()
{
GenNodeLocationQuery tree{MakeRec()
.set("window-1"
, MakeRec()
.type("persp-A")
.set("panelX"
, MakeRec()
.set("firstView", MakeRec())
.set("secondView", MakeRec())
)
)
.set("window-2"
, MakeRec()
.type("persp-B")
.set("panelY"
, MakeRec()
.set("thirdView"
, MakeRec()
.set("#1", MakeRec())
.set("#2", MakeRec())
)
)
)
.set("window-3"
, MakeRec()
.type("persp-C")
.set("panelZ"
, MakeRec()
.set("thirdView", MakeRec())
)
)
};
/* === explicitly given window spec remains unchanged === */
UICoordResolver r1 {UICoord{"window-2","persp-B","panelY"}, tree};
CHECK (3 == r1.coverDepth());
r1.anchor();
CHECK ("UI:window-2[persp-B]-panelY" == string(r1));
/* === `firstWindow` meta spec is resolved === */
UICoordResolver r2 {UICoord::firstWindow().view("blah"), tree};
CHECK (0 == r2.coverDepth());
CHECK (r2.isAnchored()); // can obviously be anchored, since there is always a first window
CHECK (not r2.canCover()); // yet this path is impossible to cover in the current UI
CHECK ("UI:firstWindow[*]-*.blah" == string(r2));
r2.anchor();
CHECK ("UI:window-1[*]-*.blah" == string(r2));
CHECK (0 == r2.coverDepth());
CHECK (not r2.canCover());
/* === `currentWindow` meta spec is resolved === */
UICoordResolver r3 {UICoord::currentWindow().view("thirdView"), tree};
CHECK (0 == r3.coverDepth());
CHECK (r3.isAnchored());
CHECK (not r3.isCovered());
CHECK (r3.canCover());
r3.anchor();
CHECK (not r3.isCovered());
CHECK (r3.isCoveredPartially());
CHECK (1 == r3.coverDepth()); // anchoring also picks the second of two possible solutions
CHECK ("UI:window-3[*]-*.thirdView" == string(r3)); // thereby covering the "thirdView"
/* === coverage solution is calculated on demand === */
UICoordResolver r4 {UICoord().view("thirdView").append("#2/sub"), tree};
CHECK ("UI:?.thirdView.#2/sub" == string(r4)); // an incomplete path is not automatically resolved
CHECK (not r4.isAnchored());
CHECK (0 == r4.coverDepth());
r4.anchor(); // but if we anchor, we force search for a coverage solution
CHECK (1 == r4.coverDepth()); // which is actually found starting from the second window,
CHECK (r4.isCoveredPartially()); // and kept in the internal cache for future use,
CHECK ("UI:window-2[*]-*.thirdView.#2/sub" == string(r4)); // but not made explicit, since we only requested anchorage
/* === already calculated coverage solution is used === */
UICoordResolver r5 {UICoord::currentWindow().view("thirdView"), tree};
CHECK (not r5.isCovered());
CHECK (not r5.isCoveredPartially());
CHECK (0 == r5.coverDepth());
CHECK (r5.canCover()); // this triggers search for a coverage solution
CHECK (1 == r5.coverDepth());
CHECK (not r5.isCovered());
CHECK (r5.isCoveredPartially());
CHECK ("UI:currentWindow[*]-*.thirdView" == string(r5));
r5.anchor(); // and this (cached) solution is also used to make anchorage explicit
CHECK ("UI:window-3[*]-*.thirdView" == string(r5));
CHECK (1 == r5.coverDepth());
CHECK (not r5.isCovered());
r5.cover(); // ...now also the coverage solution was made explicit
CHECK (r5.isCovered());
CHECK (4 == r5.coverDepth());
CHECK ("UI:window-3[persp-C]-panelZ.thirdView" == string(r5));
/* === impossible to cover and can not be anchored === */
UICoordResolver r6 {UICoord::window("windows").path("to/hell"), tree};
CHECK (not r6.isAnchored());
CHECK (not r6.canCover());
r6.anchor();
CHECK (not r6.isAnchored());
CHECK (0 == r6.coverDepth());
CHECK ("UI:windows[*]-*.*.*/to/hell" == string(r6));
}
/** @test mutate given UI coordinates by uncovered extension.
* Contrary to just appending something to the path (which is a basic path operation
* available on the generic path builder), a _path extension_ is always rooted at the
* end of the actually covered part of the UI coordinates. So extending a path implies
* search for a coverage solution, followed by truncating the path to the covered part.
* There are two flavours of extending a path:
* - extending with a literal specification, which is just appended behind the coverage
* - extending with an incomplete UI coordinate spec, which allows to place the extension
* at a specific depth (e.g. as a view). This is typically what we want in practice.
*/
void
verify_mutateExtend()
{
GenNodeLocationQuery tree{MakeRec()
.set("window-2"
, MakeRec()
.type("persp-B")
.set("panelY"
, MakeRec()
.set("thirdView"
, MakeRec()
.set("#1", MakeRec())
.set("#2", MakeRec())
)
)
)
};
/* === extend fully covered explicit path === */
UICoordResolver r1 {UICoord{"window-2","persp-B","panelY"}, tree};
CHECK ("UI:window-2[persp-B]-panelY" == string(r1));
CHECK (r1.isCovered());
r1.extend (UICoord().path("gappy").tab(2)); // can extend with partially defined UI coordinates
CHECK ("UI:window-2[persp-B]-panelY.*.#2/gappy" == string(r1)); // ...the resulting UI path is unresolved, yet can be partially covered
r1.extend ("seamless"); // ...and this partial coverage is used as base for further extension
CHECK ("UI:window-2[persp-B]-panelY.thirdView.#2/seamless" ==string(r1));
/* === extend partially covered path === */
UICoordResolver r2 {UICoord().view("thirdView").append("some/where"), tree};
CHECK ("UI:?.thirdView.some/where" ==string(r2)); // "thirdView" is covered, "some/where" is not
r2.extend ("no/where");
CHECK ("UI:window-2[persp-B]-panelY.thirdView.no/where" ==string(r2)); // ...and thus the extension is attached behind "thirdView"
CHECK (r2.isCoveredPartially());
/* === impossible extensions rejected === */ // since r2 already specifies a perspective ("persp-B")....
VERIFY_ERROR (INVALID, r2.extend(UICoord().persp("fisheye"))); // ...overwriting with another perspective is rejected as extension
CHECK ("UI:window-2[persp-B]-panelY.thirdView.no/where" ==string(r2)); // ...and the existing state is unaffected from this error
VERIFY_ERROR (INVALID, r2.extend(UICoord().view("alternative"))); // Likewise, extending with a conflicting view spec is rejected
r2.extend(UICoord().tab("nada")); // But a tab is not yet covered and thus acceptable as extension
CHECK ("UI:window-2[persp-B]-panelY.thirdView.nada" ==string(r2));
r2.extend(UICoord());
CHECK ("UI:window-2[persp-B]-panelY.thirdView" ==string(r2)); // empty coordinates implicitly attached behind the covered part
/* === unsolvable: truncate, extend, recalculate coverage === */
UICoordResolver r3 {UICoord().persp("awesome"), tree};
CHECK (not r3.canCover());
CHECK (0 == r3.coverDepth());
r3.extend (UICoord::currentWindow().tab(1)); // Extension implies covering, which effectively truncates the path
CHECK (1 == r3.coverDepth()); // ...and "currentWindow" can even be covered, thus the coverage increases
CHECK ("UI:currentWindow[*]-*.*.#1" ==string(r3)); // note coverage calculated internally, not made explicit
}
};
/** Register this test class... */
LAUNCHER (UICoordResolver_test, "unit gui");
}}} // namespace gui::interact::test